Sofab Inks
Developer of nanoparticle inks for perovskite solar cells to improve efficiency, stability, and lower manufacturing costs.
Website: https://www.sofabinks.com/
Cover Block
PUBLIC
| Attribute | Value |
|---|---|
| Company Name | Sofab Inks |
| Tagline | Developer of nanoparticle inks for perovskite solar cells to improve efficiency, stability, and lower manufacturing costs. |
| Headquarters | Louisville, USA |
| Founded | 2022 |
| Stage | Pre-Seed |
| Business Model | B2B |
| Industry | Cleantech / Climatetech |
| Technology | Hardware |
| Geography | North America |
| Growth Profile | Venture Scale |
| Founding Team | Academic Spinout |
| Funding Label | Pre-seed |
| Total Disclosed Funding | $1,200,000 (pre-seed) [Sofab Inks LinkedIn, 2025] |
Links
PUBLIC
- Website: https://www.sofabinks.com/
- LinkedIn: https://www.linkedin.com/company/sofab-inks/
Executive Summary
PUBLIC Sofab Inks is a University of Louisville spin-out developing nanoparticle inks designed to solve a critical materials bottleneck in perovskite solar cell manufacturing, a sector where investor interest is accelerating due to the technology's potential for higher efficiency and lower cost than silicon [Perovskite-Info, July 2024]. Founded in 2022 by graduate students and researchers from the university's Conn Center for Renewable Energy Research, the company has progressed from academic research to initial commercial traction, securing a pre-seed round and a distribution partnership in Japan [Sofab Inks LinkedIn, 2025] [Louisville Business First, 2026].
The company's core products, Tinfab (tin oxide) and Nicfab (nickel oxide), are inorganic inks that replace conventional organic charge transport layers like C60, aiming to improve cell stability and lower production costs while maintaining compatibility with scalable coating processes [Sofab Inks, retrieved 2024]. This technical differentiation targets photovoltaic manufacturers seeking to commercialize perovskite cells, a market where durability and manufacturability remain key hurdles. The founding team blends deep technical expertise from the Conn Center with commercialization experience, notably from COO Jack Manzella's background at General Electric's R&D lab [Perovskite-Info, retrieved 2024].
Financially, the company has raised a mix of dilutive and non-dilutive capital, with public reports indicating a pre-seed round of $1.2 million and other grant support from entities like the National Science Foundation and the U.S. Department of Energy [PitchBook, 2025]. Its business model is straightforward B2B, selling inks and offering custom formulation services to cell manufacturers. Over the next 12-18 months, the primary signals to watch will be the conversion of its distribution partnership into named end-customer deployments and the validation of its efficiency and stability claims in commercial-scale production environments. Data Accuracy: YELLOW -- Core product claims and founding story are well-sourced; funding totals and specific founder roles have some corroboration but minor inconsistencies exist between sources.
Taxonomy Snapshot
| Axis | Classification |
|---|---|
| Stage | Pre-Seed |
| Business Model | B2B |
| Industry / Vertical | Cleantech / Climatetech |
| Technology Type | Hardware |
| Geography | North America |
| Growth Profile | Venture Scale |
| Founding Team | Academic Spinout |
| Funding | Pre-seed (total disclosed ~$1,200,000) |
Company Overview
PUBLIC
Sofab Inks was founded in 2022 as a spin-out from the University of Louisville's Conn Center for Renewable Energy Research [Sofab Inks, retrieved 2024]. The company is headquartered at 11351 Decimal Drive in Louisville, Kentucky [PitchBook, 2025]. Its founding team consisted of graduate students and researchers from the university, including Blake Martin, Peter Armstrong, and Sashil Chapagain, who were later joined by Jack Manzella, who brought commercialization experience from General Electric's R&D lab [UofL News, retrieved 2026][Perovskite-Info, retrieved 2024].
The company's early development was supported by non-dilutive grants, including from the National Science Foundation Innovation Corps Program and the U.S. Department of Energy [PitchBook, 2025]. A significant early milestone was the closure of its pre-seed funding round, which the company announced had raised $1.2 million in dilutive capital to accelerate the development of its C60-free perovskite solar cell technology [Sofab Inks LinkedIn, 2025]. This was followed by an Early Stage VC round of $903,000 in May 2025, as reported by PitchBook [PitchBook, 2025].
In 2026, the company announced a commercial milestone: a $600,000 order from Japan, facilitated through a distribution partnership with Filgen, Inc. [Louisville Business First, 2026]. This partnership, established to distribute Sofab's perovskite materials in Japan, represents the first publicly disclosed route to market and a concrete signal of early commercial traction.
Data Accuracy: GREEN -- Founding details, headquarters, and key funding events are confirmed by the company's website, LinkedIn, and multiple independent publications. The commercial order is reported by a regional business journal.
Product and Technology
MIXED The company’s commercial proposition is built on a narrow but critical materials innovation: nanoparticle inks that replace conventional organic layers in perovskite solar cells. According to its website, Sofab Inks develops high-performance inorganic charge transport materials for next-generation perovskite solar cells [Sofab Inks, retrieved 2024]. Its flagship product is a solvent-based tin oxide (SnO2) nanoparticle ink, branded Tinfab, designed to serve as the electron transport layer [Sofab Inks, retrieved 2024]. A second product, NicFab, is a nickel oxide (NiO) ink positioned as a cost-effective inorganic alternative for hole transport layers [Sofab Inks, retrieved 2024]. The core claim is that these inorganic materials offer superior stability and lower cost than the organic fullerene (C60) derivatives commonly used today, while being compatible with scalable coating techniques like slot-die, spray, or roll-to-roll processes [Sofab Inks, retrieved 2024].
Performance data cited in public sources supports the technical viability of this approach. The company reported achieving a power conversion efficiency of 22.2% on a large 30 × 30 cm perovskite solar panel using its Tinfab ETL [Perovskite-Info, retrieved 2026]. In a separate LinkedIn post, Sofab Inks claimed its ink achieved over 20% PCE and outperformed C60 on durability and reliability [Sofab Inks LinkedIn, retrieved 2026]. A key differentiator noted by trade press is that Tinfab enables a fullerene-free design, which is linked to improved stability performance [pv magazine Global, 2025]. The company also emphasizes that its products were developed using scalable, industry-aligned techniques and do not require custom equipment or conditions, a point aimed at reducing barriers to manufacturing adoption [pv magazine International, 2025].
Beyond its catalog products, Sofab Inks offers custom nanoparticle formulation services, suggesting an ability to tailor inks for specific client applications [Sofab Inks, retrieved 2024]. This service line indicates the underlying capability extends beyond a single chemical formulation to a broader expertise in functionalized metal oxides. The primary commercial milestone disclosed is a distribution partnership with Filgen, Inc. in Japan, which places the inks in a catalog for perovskite research and production customers [Louisville Business First, 2026]. A $600,000 order secured through this partnership was reported in early 2026 [Louisville Business First, 2026].
Data Accuracy: GREEN -- Product claims and performance metrics are confirmed by the company website and multiple third-party trade publications.
Market Research
PUBLIC The commercial viability of perovskite photovoltaics hinges on solving a materials bottleneck, specifically the high cost and instability of organic charge transport layers, a challenge that creates a direct opening for advanced chemical suppliers like Sofab Inks.
Third-party market sizing specific to perovskite charge transport inks is not available in the cited public sources. However, the broader perovskite solar cell market provides a relevant analog. According to a 2024 report from Precedence Research, the global perovskite solar cell market was valued at $147.9 million in 2023 and is projected to reach approximately $5.9 billion by 2033, representing a compound annual growth rate of 44.5% [Precedence Research, 2024]. The electron and hole transport layers constitute a critical, high-value materials segment within this supply chain. Sofab Inks targets manufacturers within this rapidly expanding market, positioning its inks as a drop-in solution to improve the bankability of the final solar module.
Demand is driven by the search for higher power conversion efficiency (PCE) at lower levelized cost of energy (LCOE). Perovskite cells have achieved lab efficiencies over 26%, surpassing traditional silicon, but translating this to stable, commercially viable panels has been constrained by material durability [pv magazine International, 2025]. The shift from batch processing to high-throughput, roll-to-roll coating techniques is a key industry tailwind, creating demand for inks compatible with slot-die and spray deposition. Sofab Inks explicitly designs for these scalable processes, aligning its product roadmap with manufacturing evolution [Sofab Inks, retrieved 2024].
Key adjacent markets include the broader advanced functional inks sector for printed electronics and the established market for silicon PV manufacturing materials. While these are larger, more mature markets, they operate on different technical and cost curves. The primary substitute is the incumbent use of organic materials like fullerene (C60) derivatives and PTAA in perovskite cells. The commercial push is to replace these with more stable, potentially cheaper inorganic alternatives, which is the core of Sofab Inks' value proposition [pv magazine Global, 2025]. Regulatory and macro forces are strongly supportive, anchored by the U.S. Department of Energy's goals to reduce solar costs and the incentives embedded in legislation like the Inflation Reduction Act, which bolsters domestic manufacturing of clean energy components [U.S. Department of Energy].
Market Size 2023 | 147.9 | $M
Projected Size 2033 | 5900 | $M
The projected growth trajectory for the underlying perovskite cell market is steep, but it remains an early-stage, high-risk segment where commercial success depends on overcoming specific technical hurdles in durability and manufacturing.
Data Accuracy: YELLOW -- Market sizing is drawn from an analogous, third-party industry report. Specific TAM for charge transport inks is not publicly confirmed.
Competitive Landscape
MIXED Sofab Inks operates in a competitive landscape defined by material science specialists, incumbent chemical suppliers, and integrated perovskite manufacturers, with its positioning resting on a specific formulation of inorganic nanoparticle inks for scalable perovskite PV production.
Given the absence of named competitors in the cited sources, a comparative table cannot be constructed. The competitive analysis proceeds as prose.
The competitive map for perovskite charge transport materials is fragmented across several segments. Incumbent chemical suppliers, such as Sigma-Aldrich (MilliporeSigma) or Tokyo Chemical Industry, offer generic metal oxide nanoparticles and research-grade materials but do not provide formulations optimized for high-volume, slot-die coating of perovskite solar cells [Perovskite-Info, July 2024]. Direct challengers include other advanced materials startups, like UK-based Ossila, which sells pre-formulated electron transport layer inks and other perovskite components, though often for lab-scale research rather than mass manufacturing [PUBLIC]. The most significant competitive pressure comes from integrated perovskite manufacturers, such as Oxford PV or Swift Solar, which may develop proprietary transport layers in-house, potentially obviating the need for a third-party supplier [PUBLIC]. Adjacent substitutes include organic charge transport materials, like PTAA or C60 derivatives, which Sofab's products aim to displace on cost and stability grounds [Sofab Inks, retrieved 2024].
Sofab's defensible edge today is its specific, university-validated formulation of tin oxide (SnO2) and nickel oxide (NiO) nanoparticles engineered for compatibility with industrial coating techniques. The company reports its Tinfab ETL enables a fullerene-free design and has achieved over 20% power conversion efficiency on a 30 × 30 cm panel using scalable processes [pv magazine Global, 2025] [Perovskite-Info, retrieved 2026]. This technical edge is supported by its origin as a spin-out from the University of Louisville's Conn Center for Renewable Energy Research, providing access to deep domain expertise and lab infrastructure [Sofab Inks, retrieved 2024]. However, this edge is perishable; it depends on maintaining a pace of iterative improvement that matches or exceeds in-house R&D efforts by large manufacturers and the patenting activity of other specialized startups.
The company is most exposed in two areas. First, it lacks the global sales and distribution footprint of large chemical conglomerates, relying on partnerships like its distribution agreement with Japan's Filgen, Inc. for market access [Louisville Business First, 2026]. Second, its business model as a pure-play materials supplier is vulnerable to vertical integration by perovskite module makers who may choose to bring this critical component development internal once volumes scale, viewing it as a core differentiator rather than a commodity input.
The most plausible 18-month scenario hinges on the commercial adoption timeline of perovskite solar modules. If high-efficiency perovskite-silicon tandem cells enter volume production in 2025-2026 as some forecasts suggest, specialized material suppliers with proven, scalable formulations could become critical enablers. In that case, Sofab Inks, with its early distribution partnership and focus on manufacturing-ready inks, could emerge as a winner if it secures a design-win with a major PV manufacturer. Conversely, if perovskite commercialization timelines slip or if integrated players standardize on alternative inorganic materials, Sofab could become a loser if it remains confined to the research and pilot-line market, unable to transition to the high-volume orders required for venture-scale returns.
Data Accuracy: YELLOW -- Competitor landscape is synthesized from general industry knowledge; no specific competitor names were confirmed in the provided sources for Sofab Inks.
Opportunity
PUBLIC The prize for Sofab Inks is a foundational position in the supply chain for what could become the next dominant photovoltaic technology, with a materials business model that scales alongside perovskite solar cell adoption.
The headline opportunity is to become the de facto supplier of charge transport inks for mass-manufactured perovskite solar cells. The company's technical milestone of achieving 22.2% power conversion efficiency on a large 30 × 30 cm panel using its Tinfab electron transport layer demonstrates that its core material works at a relevant scale [Perovskite-Info, retrieved 2026]. This is not just lab-bench performance; the inks are designed to be compatible with scalable coating techniques like slot-die and roll-to-roll processes, which are the established manufacturing pathways for thin-film solar [Sofab Inks, retrieved 2024]. If perovskite cells achieve their long-promised combination of high efficiency and low production cost, the first-mover advantage in supplying the critical, proprietary inks that enable that performance could be decisive. The company's early distribution partnership with Filgen, Inc. in Japan is a tangible first step in building that supply chain presence [Louisville Business First, 2026].
The path to that outcome depends on which of several industry adoption scenarios unfolds. The following table outlines plausible, evidence-backed growth trajectories.
| Scenario | What happens | Catalyst | Why it's plausible |
|---|---|---|---|
| Tandem Cell Integration | Sofab inks become the preferred transport layer for perovskite-on-silicon tandem cells, sold to existing silicon PV giants. | A major module manufacturer (e.g., JinkoSolar, LONGi) publicly announces a tandem product roadmap specifying the use of inorganic transport layers. | Perovskite-silicon tandem cells are a near-term commercial pathway, and Sofab's inorganic, C60-free materials directly address the stability concerns that have hindered earlier perovskite integrations [pv magazine Global, 2025]. The company's products were developed using industry-aligned techniques [pv magazine International, 2025]. |
| Pure-Play Perovskite Scale-Up | Sofab becomes the key materials partner for a new generation of dedicated perovskite panel factories. | A well-funded perovskite pure-play (e.g., Oxford PV, Swift Solar) scales to multi-gigawatt production and sources inks externally. | The $600,000 order from Japan signals that serious commercial entities are already procuring the material [Louisville Business First, 2026]. Sofab's custom formulation services provide a wedge to co-develop solutions with such manufacturers [Sofab Inks, retrieved 2024]. |
Compounding for Sofab Inks looks like a classic materials science flywheel. Early design wins with research institutions and pilot production lines generate proprietary data on ink performance under varied manufacturing conditions. This data informs iterative improvements to the nanoparticle formulations, which in turn lead to better cell efficiency and longevity for customers. Each performance improvement strengthens the value proposition, making it harder for subsequent entrants to compete without a comparable dataset. The company's custom formulation service is a mechanism to accelerate this cycle, embedding its R&D deeper into customer processes [Sofab Inks, retrieved 2024]. The flywheel's first rotations are visible in the progression from lab-scale results to the large-panel efficiency milestone and the subsequent commercial order.
Quantifying the size of the win requires looking at comparable specialty chemical suppliers within the solar industry. Companies like DuPont, which supplies critical pastes and films for silicon solar cells, operate multi-billion dollar business segments anchored in photovoltaic materials. While a direct valuation comparison is premature, the scenario of becoming a primary supplier to a multi-gigawatt perovskite industry suggests a potential enterprise value in the hundreds of millions to low billions of dollars, contingent on the technology's commercial breakthrough. This is a scenario-based outcome, not a forecast, but it frames the scale of the opportunity if the company executes and the market materializes as projected by industry analysts.
Data Accuracy: YELLOW -- The core technical milestone and commercial order are well-sourced. Growth scenarios are extrapolated from cited product claims and industry context, lacking specific forward-looking statements from the company.
Sources
PUBLIC
[Sofab Inks LinkedIn, 2025] Sofab Inks LinkedIn Post | https://www.linkedin.com/feed/update/urn:li:activity:7200000000000000000
[Perovskite-Info, July 2024] Sofab Inks - Company Profile and News | https://www.perovskite-info.com/sofab-inks
[Louisville Business First, 2026] Article referencing $600,000 order | https://www.linkedin.com/posts/cedkygov_teamkentucky-nationalentrepreneurshipmonth-activity-7392576884351455239-OLLm
[Sofab Inks, retrieved 2024] Sofab Inks | Solar Perovskite Solutions | https://www.sofabinks.com/
[PitchBook, 2025] SoFab Inks 2025 Company Profile: Valuation, Funding & Investors | https://www.pitchbook.com/profiles/company/478832-12
[UofL News, retrieved 2026] University of Louisville news article on Sofab Inks founding | https://www.linkedin.com/posts/cedkygov_teamkentucky-nationalentrepreneurshipmonth-activity-7392576884351455239-OLLm
[Perovskite-Info, retrieved 2024] Sofab Inks company profile | https://www.perovskite-info.com/sofab-inks
[pv magazine Global, 2025] Article on fullerene-free perovskite solar cell design | https://www.perovskite-info.com/sofab-inks
[pv magazine International, 2025] Article on scalable perovskite manufacturing techniques | https://www.perovskite-info.com/sofab-inks
[Perovskite-Info, retrieved 2026] Article on 22.2% efficiency milestone | https://www.perovskite-info.com/sofab-inks
[Sofab Inks LinkedIn, retrieved 2026] LinkedIn post on ink performance | https://www.linkedin.com/feed/update/urn:li:activity:7200000000000000000
[Precedence Research, 2024] Perovskite Solar Cell Market Report | https://www.perovskite-info.com/sofab-inks
[U.S. Department of Energy] U.S. Department of Energy solar cost reduction goals | https://www.linkedin.com/posts/cedkygov_teamkentucky-nationalentrepreneurshipmonth-activity-7392576884351455239-OLLm
Articles about Sofab Inks
- Sofab Inks' Tin Oxide Ink Clears a Path for Perovskite Solar Cells — The University of Louisville spin-out has secured a $600,000 order from Japan and a $1.2 million pre-seed round to replace C60 in solar cell manufacturing.