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Black Semiconductor

Semiconductors · Aachen, Germany · Founded 2020

Graphene-based photonics for high-speed optical chip communication MoreLess

Black Semiconductor, founded in Aachen, Germany, in 2020 by brothers Dr. Daniel Schall and Sebastian Schall, is developing a new generation of chip technology that integrates graphene-based photonics with traditional electronic circuits. The company's core innovation is a process that allows chips to compute with electrons and communicate with photons, or light, by seamlessly integrating optical systems into the final layers of chip designs. This approach overcomes the bandwidth limitations of traditional electronic connections, enabling faster, more energy-efficient data transfer between chips.

The firm's technology facilitates optical chip-to-chip connections, allowing multiple chips to interact as if they were a single, more powerful unit. By using graphene as a translator to convert electronic signals into optical ones and vice versa, Black Semiconductor addresses critical bottlenecks in data-intensive applications. This has significant implications for sectors such as high-performance computing, generative AI, data centers, and autonomous driving. The company states its method can reduce manufacturing costs by requiring 60% fewer production steps.

Black Semiconductor has secured significant financial backing to realize its vision. In June 2024, the company announced one of Europe's largest funding rounds for a deep-tech chip manufacturer, totaling €254.4 million. This includes €228.7 million in public funding from the German Ministry of Economic Affairs and Climate Action and the state of North Rhine-Westphalia, committed over seven years under the IPCEI ME/CT program. This was supplemented by an additional €25.7 million in equity funding led by Porsche Ventures and Project A Ventures, with participation from Scania Growth Capital, Vsquared Ventures, and others. This capital is being used to advance product development and establish a 300mm wafer pilot production facility, FabONE, in Aachen. The company aims to begin pilot production by 2027 and transition to mass production by 2031.

Keywords: graphene photonics, optical interconnects, chip-to-chip communication, semiconductor manufacturing, data center efficiency, high-performance computing, AI hardware, autonomous driving technology, photonic integrated circuits, deep tech, optical signals, electro-optic conversion, CMOS compatibility, European semiconductor, silicon photonics, advanced materials, wafer-level graphene, next-generation chips, venture capital, IPCEI

Company overview

Black Semiconductor company information

The essential company record, classifications and operating signals in one place.

Status
Operational
Founded
2020
Headquarters
Aachen, Germany
Employees
141
Open positions
31
Dealroom signal
92.4
Investment activity
1 companies · latest Mar 2025
Capital deployed
Preferred round
ACQUISITION
client focusb2btechnologyArtificial IntelligencetechnologyHardwaretechnologyDeep TechtechnologyNanotechbusiness modelManufacturingsectorGraphenesectorCore AIsectorSpinoutsectorFuture of ComputingsectorSemiconductor Designers and ManufacturerssectorChips and ProcessorssectorAI Chips and ProcessorssectorPhotonic Chips and Processors

Valuation & funding

Black Semiconductor funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
GROWTH EQUITY NON VCOther financing Jun 2024 $252M FEDERAL MINISTRY FOR ECONOMIC AFFAIRS AND CLIMATE ACTION · Wirtschaft NRW
SERIES AEquity / VC Jun 2024 $28M $113M NRW.BANK · Cambium Capital · Onsight Ventures · Porsche Ventures
EARLY VCEquity / VC Oct 2022 $0 Cambium Capital · Vsquared Ventures · Andreas von Bechtolsheim · Project A
GRANTOther financing Jan 2022 $330K Undisclosed
SEEDEquity / VC Jan 2020 $7.3M $29M Cambium Capital · Onsight Ventures · Vsquared Ventures
SPINOUTOther financing Jan 2019 RWTH Aachen University · Graphene-flagship
Showing 6 recorded eventsUnlock the complete deal history →

Financials

Workforce over time

Available workforce history. Financial fields without reported data are omitted.

YearEmployees
2026 146
2025 100
2024 43
2023 25
2022 7
Company filings, research estimates and Dealroom dataOpen the full financial model →

Growth signals

Black Semiconductor website traffic

Latest recorded traffic for Black Semiconductor is 8.5K monthly website visits, down 15% over the last three months. Black Semiconductor's team grew 41% over the past year.

Latest monthly visits8.5K 3-month web change-15% 1-year team growth+41%
Monthly website visits46 observations · Oct 2022–Jul 2026
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Comparisons

Black Semiconductor compared with similar companies

Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.

Showing 8 of the closest matchesCompare every metric →

Capital deployed

Black Semiconductor investments and acquisitions

Recent portfolio relationships for companies that also act as investors or acquirers.

Talent graph

Black Semiconductor's talent

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Team profiled 9 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 4 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

18 investors on Black Semiconductor's cap table

Sourced from Dealroom's funding and investor records. Investor profile links are shown where available.

Seed 3 investors entered at this stage
Cambium Capital
Onsight Ventures
Vsquared Ventures
Series A 7 investors entered at this stage
Andreas von Bechtolsheim
Project A
Porsche Ventures
NRW.BANK
Capnamic Ventures
Scania Growth Capital
TechVision Fonds
Series B+ 2 investors entered at this stage
FEDERAL MINISTRY FOR ECONOMIC AFFAIRS AND CLIMATE ACTION
Wirtschaft NRW
Other known 6 additional known investors
Graphene-flagship
RWTH Aachen University
East Hill Equity
German Accelerator
Ignite Next
Intel Ignite

Global footprint

Where Black Semiconductor has talent and traffic

Workforce by country
10 countries with
team presence
🇩🇪 Germany83.6%
🇳🇱 Netherlands7.8%
🇺🇸 United States1.7%
🇫🇮 Finland1.7%
🇨🇦 Canada0.9%
Top 5 of 10 shown

In the news

Latest news about Black Semiconductor

Recent press, funding announcements, and product moves mentioning Black Semiconductor — open to read from the original sources.

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Market sentiment

What the market is saying about Black Semiconductor

An AI-synthesized read of the highest-engagement posts about Black Semiconductor on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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