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Soitec
Soitec
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Soitec is a French multinational corporation that manufactures substrates used in the manufacturing of semiconductors.

Key Information

Soitec's semiconductor materials are used to manufacture chips which are used in smartphones, tablets, computers, IT servers, and data centres. Soitec's products are also found in electronic components used in cars, connected objects (Internet of Things), as well as industrial and medical equipment.

Soitec's flagship product is silicon on insulator (SOI). Materials produced by Soitec come in the form of substrates (also called "wafers"). These are produced as ultra-thin disks that are 200 to 300 mm in diameter and are less than 1 mm thick. These wafers are then etched and cut to be used for microchips in electronics.[citation needed]

History

[edit]

Soitec was founded in 1992 near Grenoble in France by two researchers from CEA Leti, an institute for micro- and nanotechnologies research created by the French Commission for Atomic Energy and Alternative Energies (CEA). The pair developed Smart Cut™ technology to industrialize Silicon-On-Insulator (SOI) wafers, and built their first production unit in Bernin, in the Isère department of France.

Soitec's offering initially targeted the electronics market. At the end of the 2000s, Soitec launched into the solar energy and lighting markets, exploiting new openings for its materials and technologies. In 2015, the company announced that it would be refocusing its efforts on its core business: electronics.

Soitec employs about 2000 people throughout the world and currently has production units in France and in Singapore. The company also has R&D centers and commercial offices in France, the United States (Arizona and California), China, South Korea, Japan and Taiwan.

Key dates

[edit]
  • 1963: SOS is invented at North American Aviation.
  • 1965: The first MEMS device is invented at Westinghouse.
  • 1978: Hewlett-Packard develops SPER.
  • 1979: NOSC starts researching thin-film SOS.
  • 1988: NOSC publishes their SOS findings.
  • 1989: IBM starts researching SOI.
  • 1990: Peregrine Semiconductor is founded.
  • 1991: Peregrine Semiconductor launches the commercialization of SOS (UltraCMOS).
  • 1992: Creation of Soitec by researchers from CEA Leti in Grenoble, France.
  • 1995: Peregrine Semiconductor delivers its first product.
  • 1995: IBM commercializes SOI.
  • 1997: CEA-Leti spins off Tronics Microsystems to commercialize SOI MEMS.
  • 1997: Soitec shifts to mass production after the signature of a Smart Cut™ technology licensing agreement with Shin Etsu Handotai (SEH).
  • 1999: Construction of Soitec's first production site in Bernin (Bernin 1), and launch of Soitec's initial public offering.
  • 2001: IBM unveils RF-SOI technology
  • 2001: CEA-Leti and Motorola start collaborating on the development of high aspect ratio SOI MEMS.
  • 2002: OKI ships the first commercial FD-SOI LSI.
  • 2002: Inauguration of Bernin 2, a Soitec manufacturing unit dedicated to 300-mm diameter wafers.
  • 2003: Soitec acquires Picogiga International, a company specializing in technologies for III-V composite materials, and the first foray into materials other than SOI.
  • 2005: Freescale introduces HARMEMS.
  • 2006: Soitec acquires Tracit Technologies, a company specializing in molecular adhesion and mechanical and chemical thinning processes, enabling diversification into new applications for Smart Cut™ technology.
  • 2008: Soitec opens a production unit in Asia, in Singapore. In 2012, this unit housed the SOI wafer recycling business. In 2013, production stopped at the unit to prepare for the company's new Fully Depleted Silicon on Insulator (FD-SOI) technology.
  • 2009: Soitec acquires Concentrix Solar, a German supplier of concentrator photovoltaic (CPV) systems, Soitec thus entering the solar energy market.
  • 2011: Soitec acquires Altatech Semiconductor, a company specialized in developing equipment for producing semiconductors.
  • 2012: Soitec opens a production unit for CPV modules in San Diego, California, with a capacity of 140 MW, upgradeable to 280 MW.
  • 2012: GlobalFoundries and STMicroelectronics sign a sourcing agreement for 28 nm and 20 nm FD-SOI devices. GlobalFoundries agreed to manufacture wafers for STMicroelectronics using the latter's CMOS28FDSOI. The FD-SOI technology originates from the cooperation between Soitec, ST and CEA Leti.
  • 2013: Soitec signs a Smart Cut™ licensing agreement with Sumitomo Electric to develop the gallium nitride (GaN) wafer market for LED lighting applications. Signature of another agreement, with GT Advanced Technologies, to develop and commercialize equipment for producing wafers for manufacturing LEDs and other industrial applications.
  • 2014: Samsung and STMicroelectronics sign a foundry and license agreement. It enables Samsung to use the FD-SOI technology to produce 28 nm integrated circuits. Soitec solar energy division also inaugurates the first 50% of South African Touwsrivier solar plant, which will have a final total capacity of 44 MWp. The plant was never completed.
  • 2015: Samsung qualifies their 28FDS process.
  • 2015: After the stoppage of some important solar projects in the United States, Soitec announces a strategic shift toward its electronics business and a plan to leave the solar energy business.[1]
  • 2015: Peregrine Semiconductor and GlobalFoundries announce in July the first 300mm RF-SOI platform (130 nm).
  • 2015: GlobalFoundries announces in July the implementation of a technological platform for producing 22-nm FD-SOI chips (22FDX).
  • 2015: Soitec and Simgui announce the first Chinese production of 200mm SOI wafers.
  • 2015: CEA Leti demos MEMS on 300mm SOI wafers.
  • 2016: Soitec starts volume manufacturing of 300mm RF-SOI wafers.
  • 2017: GlobalFoundries announces 45RFSOI.
  • 2017: Samsung announces 18FDS.
  • 2017: IBM and GlobalFoundries announce a custom FinFET-on-SOI process (14HP).
  • 2017: Soitec signs a five-year agreement to supply GlobalFoundries with FD-SOI wafers.
  • 2018: STMicroelectronics adopts GlobalFoundries' 22FDX.
  • 2018: Soitec and MBDA acquire the Dolphin Integration assets.
  • 2019: Soitec signs a high-volume agreement to supply Samsung with FD-SOI wafers.
  • 2019: Soitec acquires EpiGaN
  • 2019: Soitec signs high-volume agreements to supply GlobalFoundries with SOI wafers.
  • 2020: GlobalFoundries announces the 22FDX+ platform.
  • 2020: Soitec signs a multi-year agreement to supply GlobalFoundries with 300mm RF-SOI wafers.
  • 2022: start of building of the Bernin 4 facility for SiC wafers,[2] intended to start production in 2024.

Operations

[edit]

Historically, Soitec has marketed Silicon on Insulator (SOI) as a high performance material for manufacturing electronic chips for computers, game consoles and servers, as well as the automotive industry. With the explosion of mobile products (tablets, smartphones, etc.) on the consumer electronics market, Soitec has also developed new materials for radio-frequency components, multimedia processors, and power electronics.

With the rapid growth of the Internet of Things, wearables, and other mobile devices, new needs have arisen in terms of performance and energy efficiency of electronic components. For this market, Soitec offers materials that help reduce the energy consumed by chips, improve their information processing speed, and support the needs of high-speed Internet.

In the solar energy market Soitec acquired Concentrix Solar, then manufactured and supplied Concentrator Photovoltaic (CPV) systems from 2009 to 2015.[3] Research to create a new generation of four-junction solar cells led Soitec to set a world record in December 2014 with a cell capable of converting 46% of solar rays into electricity. Soitec announced in January 2015 that it would be leaving the solar market after several important solar plant projects ended.[4][5]

In the lighting industry, Soitec operates upstream and downstream of the LED value chain.

Upstream, the company uses its expertise in semiconductor materials to develop substrates made from gallium nitride (GaN), the base material used in LEDs.

Downstream, Soitec is developing a range of industrial partnerships to commercialize new professional lighting solutions[buzzword] (urban, office and transport infrastructure lighting).

Technologies

[edit]

Soitec is developing numerous technologies for its different sectors of activity.

Smart Cut™

[edit]

Developed by CEA-Leti in collaboration with Soitec,[6] this technology has been patented by researcher Michel Bruel.[7] It makes possible the transfer of a thin layer of monocristalline material from a donor substrate to another by combining ion implantation and bonding by molecular adhesion. Soitec uses Smart Cut™ technology to mass-produce SOI wafers. Compared with classic bulk silicon, SOI enables a significant reduction in energy leakage in the substrate, and improves the performance of the circuit in which it is used.

Smart Stacking™

[edit]

The technology involves the transfer of partially or fully processed wafers onto other wafers. It can be adapted to wafer diameters of 150 mm to 300 mm and is compatible with a wide variety of substrates, such as silicon, glass and sapphire.

Smart Stacking™ technology is used for back-side illuminated image sensors, where it improves sensitivity and enables a smaller pixel size, as well as in smartphone radio-frequency circuits. It also opens new doors to 3D integration.

Epitaxy

[edit]

Soitec has epitaxy expertise in III-IV materials across the following fields: molecular beam epitaxy, metal organic vapor phase epitaxy and hydride vapor phase epitaxy. The company manufactures wafers of gallium arsenide (GaAs) and gallium nitride (GaN) for developing and manufacturing compound semiconductor systems.

These materials are used in Wi-Fi and high-frequency electronic devices (mobile telecommunications, infrastructure networks, satellite communications, fiber optic networks and radar detection), as well as in energy management and optoelectronic systems, such as LEDs.

Capital increases

[edit]

Soitec has carried out three capital increases:

  • The first in July 2011 to finance investments, especially for developing its solar energy and LED businesses.
  • The second in July 2013 to contribute to the refinancing of bonds convertible and/or exchangeable into new or existing shares (“OCEANEs”) due in 2014 and strengthen the company's financial structure. In addition, Soitec opened a further bond issue in September 2013.
  • The third in June 2014 to strengthen Soitec's financial profile and its cash position and support the FD-SOI substrates industrial mass production.

References

[edit]
[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia
from Grokipedia
Soitec is a French multinational corporation specializing in the and manufacture of innovative materials, particularly engineered substrates such as silicon-on-insulator (SOI) wafers, which deliver high and energy efficiency for microchips used in mobile communications, automotive, industrial, and applications. Founded in 1992 by André-Jacques Auberton-Hervé and Jean-Michel Lamure at the CEA ( à l'énergie atomique et aux énergies alternatives) in , , the company originated from the development of the proprietary Smart Cut™ technology, a pioneering process for creating thin crystalline layers essential to SOI substrates. Listed on the stock exchange since 1999, Soitec has expanded globally, establishing manufacturing facilities in (Bernin site) and , while partnering with entities like Simgui in to serve key markets in , , , and beyond. With over 2,200 employees and more than 4,300 patents, the company invests approximately 17.1% of its revenue in , driving innovations like fully depleted SOI (FD-SOI) for automotive cybersecurity and radio-frequency SOI (RF-SOI) for connectivity. Its product portfolio includes partially depleted SOI (PD-SOI), imager-SOI, power-SOI, and photonics substrates, all produced on 200 mm to 300 mm wafers to support sustainable advancements. Soitec's growth has been marked by strategic milestones, including the 2008 launch of its Substrate Innovation Center in with CEA and the 2012 opening of its facility, which boosted production capacity to over one million SOI wafers annually. By 2022, celebrating its 30th anniversary, the company derived 95% of its revenue from international markets, with a focus on like electric vehicles, edge AI, and . Committed to , Soitec has implemented a Plan aligned with the Paris Agreement's 1.5°C target, achieving a 32% reduction in consumption per unit since and 36% of , with goals to reach 50% by 2030. Operating six production lines as of 2025, Soitec positions itself as a leader in engineered substrates, fostering energy-efficient innovations that address global challenges in connectivity and .

Company Overview

Corporate Profile

Soitec is a French multinational corporation specializing in the design and manufacture of innovative semiconductor materials, particularly silicon-on-insulator (SOI) wafers and other engineered substrates essential for advanced electronics. Established in 1992 in Bernin, France, by engineers André-Jacques Auberton-Hervé and Jean-Michel Lamure in collaboration with the French Alternative Energies and Atomic Energy Commission (CEA-Leti), the company has grown into a key player in the global semiconductor supply chain. Its global headquarters remain in Bernin, near Grenoble, where it employs approximately 2,200 people across diverse nationalities, reflecting a workforce with an average age of 39.4 years and a strong emphasis on talent development, including the hiring of 265 young professionals under 28 in recent years. The company's is overseen by a , chaired by Frédéric Lissalde since March 1, 2025, which determines strategic direction and ensures implementation. Key executives include Pierre Barnabé, appointed in July 2022, who leads operations with prior experience in cybersecurity and from ; Albin Jacquemont; and Executive Vice-President and Chief Sales Officer Ruth Hernandez, who joined in January 2025. This leadership structure supports Soitec's focus on innovation and sustainability in semiconductor materials. Soitec has been publicly traded on the (Compartment A) under the SOI since its in 1999, with shares identified by code FR0013227113. As a leader in engineered substrates, Soitec's mission centers on delivering high-performance, energy-efficient solutions for applications in mobile communications, AI, and electric mobility, underpinned by proprietary technologies such as Smart Cut™ for precision material layering.

Products and Markets

Soitec's core product portfolio centers on engineered substrates, primarily Silicon-on-Insulator (SOI) wafers and compound solutions. Key SOI variants include RF-SOI substrates optimized for radiofrequency applications in devices, FD-SOI for ultra-low-power integrated circuits, and PD-SOI for photonic integrated circuits. Additionally, the company offers RF-GaN substrates that enhance power efficiency in high-frequency systems, as well as SmartSiC substrates tailored for . These products leverage technologies like Smart Cut™ for layer transfer in SOI production. The company's substrates serve three primary market segments: mobile communications, automotive and industrial, and edge AI with datacenters. In mobile communications, RF-SOI and RF-GaN enable high-performance filters and amplifiers for smartphones and base stations, supporting faster data rates and improved . Automotive and industrial applications utilize FD-SOI, Auto Power-SOI, and SmartSiC for power management, motor drives, and energy-efficient systems in and EV charging infrastructure. Edge AI and datacenter markets benefit from FD-SOI and SOI, facilitating low-latency computing and high-speed optical interconnects in IoT devices and high-performance servers. Soitec's revenue is predominantly international, with approximately 95% derived from sales outside , reflecting its global customer base in , , and . This diversification strategy helps mitigate industry cycles, such as the 2025 semiconductor market contraction that led to a 9% year-over-year decline to €891 million for fiscal year 2025. The substrates' design emphasizes reduced energy leakage and higher operational speeds, critical for applications in IoT sensors, autonomous vehicles, and AI accelerators, thereby enabling more efficient and compact electronics.

History

Founding and Early Development

Soitec was founded in 1992 as a spin-off from the French Alternative Energies and Atomic Energy Commission (CEA), specifically emerging from the CEA-Leti research institute near Grenoble, France. The company was established by CEA engineers André-Jacques Auberton-Hervé and Jean-Michel Lamure, along with other researchers, to commercialize innovative layer-transfer technologies for semiconductor applications. At its inception, Soitec focused on advancing silicon-on-insulator (SOI) substrates, which enable reduced energy consumption in electronic devices by isolating active silicon layers. A pivotal early milestone was the development of Smart Cut™ technology in 1992, which became the company's core intellectual property for producing high-quality SOI wafers through precise atomic-scale layer transfer. This process, originating from CEA-Leti research, allowed for the efficient creation of thin films on insulating substrates, addressing key limitations in traditional manufacturing. Early operations involved establishing a pilot to validate the technology, which attracted interest from industrial partners and led to a with Shin-Etsu Handotai (SEH), a leading Japanese producer. The transition from research to commercial production presented significant challenges, including scaling up the Smart Cut™ process for reliable industrial output while maintaining technological precision. Soitec relied heavily on its ongoing partnerships with CEA-Leti for continued and expertise during this phase. By 1999, these efforts culminated in key advancements: the company launched its (IPO) on the Paris Stock Exchange's Nouveau Marché, providing capital for expansion, and inaugurated the Bernin 1 facility near . Bernin 1 became the world's largest SOI production site at the time, employing over 100 staff and marking Soitec's entry into full-scale manufacturing.

Expansion and Strategic Shifts

In the mid-2000s, Soitec expanded its global footprint into to capitalize on growing demand in the region. In 2004, the company established its first commercial subsidiary, Soitec Asia, in , , to enhance sales and support operations. The following year, in 2005, Soitec opened an office in to further strengthen its presence in key Asian markets, coinciding with significant employee growth that surpassed 500 personnel worldwide by the end of the fiscal year. To bolster in semiconductor materials, Soitec partnered with the French Alternative Energies and Atomic Energy Commission (CEA) in 2008 to launch the Substrate Innovation Center. This facility, located on CEA's campus, focused on advancing engineered substrates for applications in and related fields, marking a key step in Soitec's innovation strategy. Soitec continued its manufacturing expansion in 2008 with the inauguration of a production site in , featuring 4,000 square meters of clean rooms and an annual capacity to produce one million silicon-on-insulator (SOI) wafers. This facility, known as Pasir Ris 1, represented the company's first major manufacturing hub in and supported increased production for global customers in and other sectors. Between 2012 and 2015, Soitec underwent a strategic refocus on its core business, divesting non-core activities to streamline operations and improve financial efficiency. The company exited the market, including concentrated photovoltaic (CPV) systems, by selling its solar division assets in 2015 to concentrate on semiconductor substrates. Similarly, Soitec withdrew from lighting technologies and equipment manufacturing during this period, allowing it to redirect resources toward high-growth areas like SOI and emerging materials. Marking three decades of operations in 2022, Soitec initiated construction of its Bernin 4 facility in , dedicated to silicon carbide () wafer production using its SmartSiC™ technology, with full-scale output beginning in 2024. This €400 million investment aimed to meet rising demand in electric vehicles and , expanding Soitec's capacity for advanced substrates. In 2022, Soitec introduced its Climate Plan, committing to align operations with the Paris Agreement's 1.5°C global warming limit through targeted reductions in , including a 37% cut in scopes 1 and 2 by 2030 relative to 2020 levels. The plan emphasized sustainable manufacturing practices and supply chain decarbonization to support the company's long-term environmental responsibility. Soitec maintains R&D and sales offices in and to serve North American markets. In response to the 2025 market downturn driven by weakened automotive and demand, Soitec accelerated diversification efforts, broadening its end-market exposure and customer base across power, RF, and segments to mitigate cyclical risks. This strategy included revised financial guidance and a focus on high-margin products to stabilize revenue amid a projected high-single-digit percentage decline for the .

Global Operations

Manufacturing Facilities

Soitec's primary manufacturing operations are centered at its Bernin campus in , which houses the company's global headquarters and serves as the main hub for substrate production. The campus features multiple fabrication units, including Bernin 1, 2, 3, and 4, equipped with advanced infrastructure dedicated to high-precision . These facilities enable the production of specialized materials essential for applications, with a focus on and technological integration. The Bernin 4 fab, specifically tailored for () substrates via Soitec's SmartSiC™ technology, includes a 2,500 m² and represents a strategic expansion with an investment exceeding €300 million in equipment to support high-volume output. This unit complements the campus's overall capabilities, which include lines for various advanced substrates, ensuring proximity to European supply chains and R&D resources. The infrastructure emphasizes efficiency, with designs optimized for ISO 4 standards to maintain ultra-low contamination levels during production. Internationally, Soitec operates a key fabrication facility in , located at the Wafer Fab Park, which has undergone expansions to bolster capacity for silicon-on-insulator (SOI) production and align with Asian market demands. This site, spanning significant and , works in tandem with the Bernin operations to provide a balanced global footprint, totaling cleanroom areas that support millions of wafer starts annually across high-volume lines. Additional R&D and sales offices are maintained in the United States, , , , and to facilitate regional collaboration and customer support without hosting full-scale . Sustainability is embedded in Soitec's manufacturing processes through its Climate Plan, which targets climate neutrality by 2050 and includes measures like wastewater reuse at the Bernin site to reduce environmental impact. Recent strategic moves include plans for a new U.S. facility to address growing North American requirements for in sectors such as automotive and mobile technologies. These initiatives underscore Soitec's commitment to resilient, eco-conscious global infrastructure.

Business Segments

Soitec's primary business segment is , which encompasses the production and sale of silicon-on-insulator (SOI) substrates tailored for and radio-frequency (RF) applications in semiconductors. This segment serves including mobile communications, automotive and industrial applications, and edge and cloud AI, with SOI wafers enabling enhanced performance and energy efficiency in devices such as smartphones, electric vehicles, and components. Central to Soitec's operations is the Smart Cut™ unit, which focuses on the core substrate technology involving processes to layer ultra-thin films onto insulators, forming the foundation for nearly all SOI wafers produced globally. This technology underpins the company's engineered materials and supports diversification across applications by improving electrical isolation and reducing power consumption in integrated circuits. The Smart Photonics unit develops optical and sensing solutions, particularly -SOI substrates that facilitate high-speed data interconnects and integrated for AI data centers and sensing technologies. Integrated into the Edge & Cloud AI market, this unit has seen growth driven by surging demand for efficient optical connectivity in datacenters, contributing to the company's expansion beyond traditional electronics. As of fiscal year 2025 (ended March 31, 2025), the segment accounted for the entirety of Soitec's following the discontinuation of the Others segment. In the first half of fiscal year 2025 (ended September 30, 2024), mobile communications represented approximately 51% of contributions amid a 15% decline due to market downturns in smartphones and automotive sectors. The area within Edge & AI comprised about 32% of first-half and aided diversification to counter volatility. For the full fiscal year 2025, declined 9% year-over-year. Soitec's operational strategies emphasize , such as the divestiture of non-core assets like Dolphin Design (completed in 2024) to streamline focus on high-growth areas, alongside robust practices to navigate the cyclical , including inventory adjustments and capacity optimizations. The company generates 95% of its revenue from international markets, with a oriented toward (65% of sales) and (27%), supported by facilities like the Singapore plant for electronics production.

Core Technologies

Smart Cut™

The Smart Cut™ process is a patented layer-transfer technique that enables the production of -on-insulator (SOI) wafers by transferring an ultrathin single-crystal layer onto an insulating substrate. The mechanics involve implanting light ions, typically , into a donor wafer at a precise depth to create a weakened plane, followed by direct to a target substrate with a buried layer, and then a splitting step induced by thermal or mechanical stress to detach the thin (typically 10-100 nm thick). This results in a high-quality SOI structure where the transferred layer is isolated by the insulator, allowing for precise control over layer thickness and uniformity using standard equipment. Invented in 1992 at CEA-Leti, a French research institute, the technology was commercialized through Soitec, which was founded the same year by CEA researchers to industrialize the process. Soitec scaled Smart Cut™ for mass production starting in 1997, following a key licensing agreement that enabled volume manufacturing of SOI wafers. Key advantages of Smart Cut™-produced SOI wafers include reduced energy leakage currents due to the insulating layer, which can lower power consumption by up to 30% compared to bulk , alongside improvements in chip speed (up to 35% faster operation) and overall reliability through minimized and better thermal management. These benefits make SOI particularly suitable for high-performance applications requiring efficiency and robustness. The process serves as the core technology for RF-SOI substrates used in and wireless communications, where it supports high-frequency operations with low power and high linearity in RF switches and components. Additionally, it underpins fully depleted SOI (FD-SOI) for low-power devices, such as those in IoT, automotive radars, and smart connected systems, enabling enhanced integration and reduced consumption in battery-constrained environments.

Smart Stacking™

Smart Stacking™ is a patented layer transfer technology developed by Soitec that enables the precise stacking of ultra-thin layers from processed or partially processed wafers onto diverse carrier substrates, facilitating advanced 3D integrated circuits (ICs) and heterogeneous device architectures. The process involves several key steps: surface activation and conditioning of the wafers for optimal bonding, low-temperature direct molecular bonding to form a strong interface without adhesives, mechanical and chemical thinning to achieve ultra-thin layers (typically in the range of nanometers to micrometers), edge trimming for uniformity, and final cleaning with to ensure quality and yield. This wafer-to-wafer approach supports substrate diameters from 150 mm to 300 mm and is compatible with a variety of materials, including , , ceramics such as polycrystalline aluminum nitride, fused silica, and . The technology's primary advantages lie in its ability to enable heterogeneous integration by combining silicon-based layers with dissimilar materials, such as III-V compounds, allowing for the creation of multifunctional devices that leverage the strengths of each material system. By stacking layers vertically, Smart Stacking™ significantly reduces overall chip size—up to 45% in certain RF applications—and lowers power consumption through minimized interconnect lengths and parasitic capacitances, while enhancing performance in complex, high-density electronics. These benefits make it particularly suitable for applications requiring compact, efficient designs without compromising reliability or thermal management. As an extension of Soitec's foundational Smart Cut™ layer transfer method, Smart Stacking™ builds on over 20 years of refinement in bonding and thinning techniques, incorporating innovations for handling pre-processed wafers to support multi-layer 3D architectures. It has become a cornerstone for advancing sensors and , where precise layer control is essential for high-volume manufacturing. In practical applications, Smart Stacking™ excels in 3D integration for automotive sensors, such as accelerometers and gyroscopes used in deployment, , and anti-lock braking systems, delivering enhanced precision and low power through low-stress layers and reduced capacitance. It also supports heterogeneous 3D stacking in for compact optical devices and in RF front-end modules, as demonstrated by Soitec's 2024 partnership with (UMC), which introduced the industry's first 3D IC solution for RF-SOI technology, enabling smaller dies for and beyond applications in smartphones, XR, and IoT devices.

Epitaxy

Soitec's epitaxy processes involve the use of metal-organic chemical vapor deposition (MOCVD) to grow thin films of compound semiconductors such as (GaAs) and (GaN) on various substrates. This technique enables the precise deposition of heteroepitaxial layers, including (In,Al)N/GaN and (Al,Ga)N/GaN structures, on high-resistivity or semi-insulating substrates, producing crack-free films suitable for high-frequency RF and high-power applications. These processes offer significant advantages, including enhanced efficiency in RF amplification through higher power density and compared to silicon-based technologies, as well as improved LED performance via GaN's wide bandgap properties that support high-voltage and high-temperature operation. Integration with silicon-on-insulator (SOI) substrates allows for hybrid wafers that combine these compound layers with for advanced functionality. Following a strategic refocus in 2012 toward core activities, Soitec expanded its capabilities, initiating joint developments for GaN templates and licensing agreements for GaN wafer production. This growth accelerated with the 2019 acquisition of EpiGaN, a key supplier of GaN epitaxial wafers, positioning as essential for and components. Key applications include GaN-on-SOI structures for , enabling efficient high-voltage devices in energy systems, and GaAs epitaxial wafers for mobile RF filters that provide low RF loss and high isolation in smartphones and base stations.

and Innovations

Soitec has advanced silicon carbide (SiC) substrate technology through its SmartSiC™ platform, which leverages the Smart Cut™ process involving implantation to engineer cost-effective power substrates from polycrystalline SiC materials bonded to polycrystalline SiC handles. This innovation addresses vulnerabilities in traditional monocrystalline SiC production by enabling each monocrystalline SiC donor to be reused up to 10 times, allowing one monoSiC boule to yield up to 500 SmartSiC™ wafers, significantly lowering costs and enhancing for high-volume manufacturing. Production of SmartSiC™ wafers commenced at the Bernin 4 facility near , , in early 2024, with a flexible ramp-up for 150-200 mm wafers targeting applications in electric vehicles (EVs) and industrial power systems. In EVs, SmartSiC™ substrates support 800V architectures, improving the efficiency of traction inverters, onboard chargers, and DC-DC converters, which reduces power losses and enables vehicle ranges exceeding 500 km—compared to around 350 km with conventional IGBT devices—while minimizing cooling requirements and battery size. For industrial applications, these substrates facilitate high-voltage systems (600V-3300V) in motor drives, power supplies, and converters, offering up to 30% higher and reducing energy dissipation for more reliable grid stabilization. Additionally, the manufacturing process cuts CO₂ emissions by up to 80% relative to traditional SiC methods, aligning with goals in . Soitec's innovations center on silicon-on-insulator (SOI) substrates optimized for optical networks and high-data-rate transceivers, enabling dense integration of photonic components with to handle escalating bandwidth demands in datacenters. These Photonics-SOI platforms deliver low-loss waveguides, modulators, and detectors on 300 mm wafers with angstrom-level surface uniformity, supporting scalable production for telecom and computing infrastructures. In datacenters, they facilitate energy-efficient optical interconnects that reduce power consumption for AI workloads, addressing the need for terabit-per-second data transfer rates amid surging computational requirements. Soitec's efforts build briefly on its epitaxy techniques for integrating materials like (GaN) in optoelectronic devices. Looking ahead, Soitec's "anything-on-anything" roadmap emphasizes heterogeneous integration, allowing diverse material layers—such as III-V compounds on or SiC hybrids—to be bonded via Smart Cut™ and Smart Stacking™ for multifunctional devices in AI, power, and . Amid 2025 market challenges, including declines in automotive and consumer segments due to geopolitical tensions and pressures, the company is prioritizing diversification into AI datacenters and industrial power, aiming to expand its customer base and elevate emerging products like SmartSiC™ and Photonics-SOI to over €100 million in annual .

Financial Performance

Soitec's revenue demonstrated robust growth in 2023 (FY23), reaching €1,089 million, a 26% increase on a reported basis from €863 million in 2022 (FY22). This expansion, approximating 25% at constant exchange rates, was primarily fueled by heightened demand for substrates in 5G applications and (EV) technologies, particularly in RF-SOI and FD-SOI products supporting connectivity and automotive systems. Revenue declined in FY24 to €978 million (-10% YoY) and further in FY25 to €891 million (-9% YoY), attributed to a broader market slump characterized by inventory corrections and weakened demand across mobile communications and automotive sectors. Quarterly performance in recent periods highlighted ongoing volatility. In the fourth quarter of FY25 (Q4'25), revenue stabilized at €327 million, remaining flat at constant exchange rates (CER) compared to the prior year, buoyed by modest gains in FD-SOI sales for mmWave applications despite broader market pressures. The first half of FY25 (H1'25) saw revenue of €338 million, down 15% at CER year-over-year, reflecting significant declines in RF-SOI volumes due to customer inventory adjustments in the smartphone sector. Extending into the new fiscal year, Q1 FY26 revenue fell to €92 million, a 16% decrease year-over-year on an organic basis, continuing the trend of subdued activity amid persistent RF-SOI corrections. In H1 FY26, revenue was €231 million, down 32% reported and 29% organic year-over-year, driven by a 30% organic decline in Mobile Communications due to RF-SOI inventory adjustments, partially offset by growth in Automotive & Industrial. The revenue mix across business segments has increasingly reflected diversification efforts, with Automotive & Industrial contributing a growing share through power and sensing applications, offsetting declines in Mobile Communications. Looking ahead, analysts project FY26 revenue of approximately €900 million (flat from FY25), with long-term annual growth around 4.7% through diversification into AI, , and advanced power solutions, potentially scaling toward €1.5 billion by the late 2020s (as of May 2025 estimates). Q3'26 revenue is expected to grow mid-to-high single digits sequentially on an organic basis. As of October 2025, Soitec's stood at approximately $1.7 billion, with shares trading at $47.50 on the OTC market.
Fiscal YearRevenue (€ million)Year-over-Year Change
FY22863+50% (from FY21)
FY231,089+26%
FY24978-10%
FY25891-9%

Capital Raises and Funding

In 2011, Soitec executed a capital increase of €150 million to fund its expansion into and LED applications, enabling investments in high-efficiency solar cells and lighting technologies amid growing demand for solutions. This raise supported the company's diversification beyond traditional substrates, including the development of concentrator photovoltaic systems. Subsequent capital raises in 2013 and 2014 bolstered recovery efforts in solar operations while accelerating fully depleted silicon-on-insulator (FD-SOI) production. In 2013, Soitec conducted a to solar project advancements and initial FD-SOI capacity buildup to meet emerging needs in mobile and IoT devices. By mid-2014, an additional €83.1 million capital increase further strengthened the balance sheet, supporting solar recovery through project bonds like the €100 million financing for a 44 MWp concentrator photovoltaic plant in and ramping FD-SOI output at the Bernin facility. Following these events, Soitec shifted toward self-sustained growth, with no major equity raises after 2014, relying instead on robust internal cash flows from core segments to fund expansions. In 2022, the company committed approximately €400 million to the Bernin 4 facility, including €80 million for construction and cleanroom setup, to enhance () and SOI production without external equity. This investment, partly supported by €59 million in financing, enabled the 2024 ramp-up of SmartSiC™ wafers for and power applications. These funds also facilitated the 2015 divestiture of non-core solar systems to Akuo Energy, allowing refocus on high-margin semiconductors. Soitec's funding strategies have emphasized for inorganic growth, alongside alignment with subsidies under programs like the Important Projects of Common European Interest (IPCEI) for innovation. In recent years, participation in EU-funded initiatives, such as the for advanced FD-SOI platforms, has provided non-dilutive support for R&D. Amid a 2025 market downturn, the company adjusted its fiscal year targets, forecasting high single-digit revenue declines while prioritizing cash preservation for strategic M&A to bolster SiC and capabilities.

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