Perovskite Light Management Patent Landscape 2026
Perovskite light management is a Growth-stage field dominated by Chinese solar manufacturers and a small number of US academic institutions, with the top five filers holding 28% of the hundred largest filers’ combined total. The field expanded sharply on a multi-year basis, though annual volume eased from its 2023 peak and the most recent filing years remain understated by publication lag.
Chinese solar manufacturers lead a moderately concentrated field
Trina Solar, Jingao Solar, and the Jinko Solar group each appear at the top of the applicant ranking, with Trina Solar and Jingao Solar both reaching 8 patent records and three Jinko-affiliated entities collectively accounting for a significant block of activity.
The top five filers account for 28% of the hundred largest filers’ combined total, indicating a moderately concentrated but not monopolised competitive structure. A clear first tier of three Chinese module manufacturers sits above a second tier that includes Caelux Corp, Hanwha Solutions, and two US universities.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Trina Solar Co., Ltd. | 8 | |
| 2 | Jingao Solar Co., Ltd. | 8 | |
| 3 | Shangrao Jinko Solar Technology Development Co., Ltd. | 8 | |
| 4 | Jinko Solar Co., Ltd. | 7 | |
| 5 | Zhejiang Jinko Solar Co., Ltd. | 7 | |
| 6 | Caelux Corp | 7 | |
| 7 | Hanwha Solutions Corp | 6 | |
| 8 | The University of North Carolina at Chapel Hill | 6 | |
| 9 | The Arizona Board of Regents on behalf of the University of Arizona | 6 | |
| 10 | Tongwei Solar Energy (Chengdu) Co., Ltd. | 4 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Chint New Energy Technology Co., Ltd. | 4 | |
| 12 | LONGi Green Energy Technology Co., Ltd. | 4 | |
| 13 | LG Electronics Inc. | 3 | |
| 14 | Dalian Institute of Chemical Physics, Chinese Academy of Sciences | 2 | |
| 15 | Shanghai Jiao Tong University | 2 | |
| 16 | Dollarchip Technology Inc. | 2 | |
| 17 | Simax Shanghai Co., Ltd. | 2 | |
| 18 | Zhejiang Zheneng Technology Research Institute Co., Ltd. | 2 | |
| 19 | China Nuclear Power Co., Ltd. | 2 | |
| 20 | Guilin University of Electronic Technology | 2 |
The leaders’ positions—dominated by vertically integrated solar manufacturers—suggest that perovskite light management is being driven primarily by tandem cell commercialisation rather than by display or general optoelectronics applications, consistent with the top-cited patents focusing on perovskite-silicon tandem architectures.
Filing data for 2024–2026 is subject to publication lag and is likely undercounted; apparent softness in those years should not be interpreted as a decline in activity. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A 233% multi-year surge anchored in organic-semiconductor and semiconductor-device classes
The filing trend chart and the technology-composition breakdown together reveal a field that grew strongly across the observed window but is now normalising from its 2023 peak, with activity concentrated in two dominant IPC classes.
Annual filing trend
Annual filings rose from 5 records in 2017 to a peak of 23 in 2023, reflecting the broader push toward perovskite-silicon tandem commercialisation. The three-year recent window sits 233% above the prior three-year window on a multi-year basis. Figures for 2024 and beyond are understated by publication lag and should not be read as a real decline.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H10K (organic semiconductors) is the dominant class with 77 patent records, followed by H01L (semiconductor devices) with 50. The remaining classes are sparse by comparison: H01G (capacitors) at 13, B82Y (nanotechnology) and H10F (photovoltaic and light-sensitive devices) at 5 each. This distribution confirms that the corpus is anchored in perovskite active-layer and device-structure innovation rather than in system-level or coating-process approaches.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
VERFAHREN ZUR HERSTELLUNG EINER PEROWSKIT-SOLARZEL…
The present application relates to the technical field of solar cell manufacturing. The present application particularly relates to a method for manufacturing a perovskite solar cell and a perovskite solar cell. The formation of the perovskite layer of the perovskite solar cell comprises the following steps: forming an inorganic precursor solution and… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | 光转化效率高的两端钙钛矿异质结晶硅叠层太阳能电池及其制备方法 | 37 |
| 2 | Tandem solar cell and method of manufacturing the … | 31 |
| 3 | Method for manufacturing perovskite silicon tandem… | 29 |
| 4 | Perovskite silicon tandem solar cell and manufactu… | 15 |
| 5 | Tandem solar cell and method of manufacturing the … | 11 |
| 6 | Tandem solar cell | 10 |
| 7 | Perovskite/silicon tandem photovoltaic device | 9 |
| 8 | Perovskite silicon tandem solar cell and manufactu… | 6 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the competitive structure means for R&D investment decisions
The field’s Growth-stage profile, moderate concentration, and emerging academic-industry collaboration patterns define where incremental and disruptive entry is most viable.
Growth stage — expanding on a multi-year basis from a small base
The field is classified as Growth, with recent three-year filings 233% above the prior three-year window. Annual volume peaked in 2023 and has eased since, though publication lag makes the most recent years appear softer than they are. The corpus of 111 patent families is still small enough that well-targeted filings can establish meaningful positions without displacing an entrenched incumbent.
Growth stageModerate concentration with a tight cluster at the top
The top five filers hold 28% of the hundred largest filers’ combined total, and the first tier is dominated by three Chinese solar manufacturers. A second tier of challengers—including Caelux Corp, Hanwha Solutions, and two US universities—is close behind. This relatively shallow gap means a technically differentiated entrant could move into the second tier with a focused filing campaign.
Moderate concentrationTwo active co-filing pairs — one industry, one academic
The most active co-filing relationship is between Zhejiang Jinko Solar and Jinko Solar Co., Ltd., with 7 joint filings, reflecting intra-group coordination within the Jinko Solar organisation. The University of North Carolina at Chapel Hill and the Arizona Board of Regents (University of Arizona) have 6 joint filings, representing the leading academic collaboration. No significant cross-sector (industry-academia) co-filing is evident in the evidence.
Emerging collaborationChina leads filings; Europe and the US offer broad protection coverage
China is the lead filing jurisdiction with 38 patent records, followed closely by Europe (EPO) at 26 and the United States at 25. India and Australia account for 6 and 4 records respectively, suggesting early-stage market protection in emerging solar markets. WIPO PCT filings stand at 3, indicating that international prosecution is not yet the dominant strategy for most filers.
China-led, trilateral coverageGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| Zhejiang Jinko Solar Co., Ltd. | Jinko Solar Co., Ltd. | 7 |
| The University of North Carolina at Chapel Hill | The Arizona Board of Regents on behalf of the University of Arizona | 6 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Trina Solar and Jinko Solar entities lead; Caelux and Hanwha are the key challengers
The top of the ranking is occupied by Chinese crystalline-silicon and tandem-cell manufacturers, all of which entered the corpus as new entrants in the recent measurement window. Caelux Corp stands out as the leading non-Chinese, non-academic applicant.
Trina Solar Co., Ltd.
Trina Solar holds 8 patent records, tied at the top of the ranking. Its technology emphasis sits across organic-semiconductor device structures (H10K30, H10K71) and semiconductor device classes (H01L31), consistent with a tandem cell integration strategy. Its momentum trend is marked as a new entrant, meaning all activity falls within the recent filing window — indicating a rapid, concentrated entry into the space rather than a long-established position.
patent records: 8Caelux Corp
Caelux Corp holds 7 patent records and is the highest-ranked non-Chinese, non-academic applicant. Its primary focus is H01L31 (semiconductor devices, 6 records), with a secondary record in B23K26 (laser processing), suggesting an emphasis on device-level integration and precision fabrication steps for perovskite top cells. Like the Chinese leaders, its momentum is classified as a new entrant, with 5 records in the recent window.
patent records: 7| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Zhejiang Jinko Solar Co., Ltd. | 7 | ▲ new entrant |
| Jinko Solar Co., Ltd. | 7 | ▲ new entrant |
| Caelux Corp | 5 | ▲ new entrant |
| Hanwha Solutions Corp | 6 | ▲ new entrant |
| The University of North Carolina at Chapel Hill | 1 | ▲ new entrant |
| The Arizona Board of Regents on behalf of the University of Arizona | 1 | ▲ new entrant |
| Tongwei Solar Energy (Chengdu) Co., Ltd. | 2 | ▲ new entrant |
| Chint New Energy Technology Co., Ltd. | 3 | ▲ new entrant |
Under-served branches adjacent to the dominant H10K and H01L core
Several IPC branches appear with low record counts relative to the dominant classes, representing areas of relative sparsity. Two of these have plausible technical value and a realistic entry path for perovskite light management.
B82Y · Nanotechnology applications
With only 5 patent records, nanotechnology-framed approaches to perovskite light management are sparsely covered. Nano-structured light-scattering layers, quantum-dot interlayers, and nano-patterned anti-reflection coatings are technically relevant to improving photon harvesting in perovskite tandems. Entrants with expertise in nanofabrication or colloidal synthesis could file in this branch with limited direct competition from current leaders, whose portfolios are anchored in H10K and H01L device-structure claims.
Search this in Eureka →H10F · Photovoltaic & light-sensitive devices
H10F holds only 5 patent records despite being a natural classification home for photovoltaic device claims involving light management — such as spectrum splitting, photon recycling, and luminescent down-shifting in perovskite cells. The sparse count may partly reflect reclassification conventions, but it also suggests that device-level light-management claims written primarily around the photovoltaic function rather than the semiconductor or organic-semiconductor structure remain a relatively open area. Researchers targeting photon management at the cell-stack level may find less prior art here than in H10K.
Search this in Eureka →How leaders differ across technology routes
Route coverage across the main technology branches in the current evidence set.
| Player | H10K 30 · Organic semiconductors (OLED etc.) | H01L 31 · Semiconductor devices | H10K 71 · Organic semiconductors (OLED etc.) | H10K 85 · Organic semiconductors (OLED etc.) | H01G 9 · Capacitors |
|---|---|---|---|---|---|
| LG Electronics Inc. | Emerging · 3 | Strong · 16 | Absent | Emerging · 3 | Moderate · 5 |
| Jinko Solar Co., Ltd. | Strong · 4 | Strong · 3 | Strong · 3 | Moderate · 2 | Absent |
| Zhejiang Jinko Solar Co., Ltd. | Strong · 4 | Strong · 3 | Strong · 3 | Moderate · 2 | Absent |
| Hanwha Solutions Corp | Strong · 6 | Absent | Moderate · 3 | Moderate · 2 | Absent |
| Chint New Energy Technology Co., Ltd. | Strong · 4 | Absent | Strong · 4 | Absent | Absent |
| LONGi Green Energy Technology Co., Ltd. | Strong · 4 | Absent | Moderate · 2 | Moderate · 2 | Absent |
| Trina Solar Co., Ltd. | Strong · 4 | Absent | Moderate · 2 | Absent | Moderate · 1 |
Frequently asked questions
The analysis covers 111 patent families. This is a relatively small corpus, which means that well-targeted new filings can still establish meaningful competitive positions.
Trina Solar, Jingao Solar, and Shangrao Jinko Solar Technology each hold 8 patent records, placing them at the top of the ranking. Jinko Solar Co., Ltd. and Zhejiang Jinko Solar follow with 7 records each, and Caelux Corp also holds 7 records as the leading non-Chinese applicant.
China leads with 38 patent records, followed by Europe (EPO) with 26 and the United States with 25. India and Australia have 6 and 4 records respectively, and WIPO PCT filings stand at 3.
The field is in a Growth stage. The recent three-year filing window is 233% above the prior three-year window on a multi-year basis. Annual volume peaked at 23 records in 2023 and has eased since; figures for 2024–2026 are understated by publication lag and should not be read as a real decline.
H10K (organic semiconductors) dominates with 77 patent records, followed by H01L (semiconductor devices) with 50. H01G (capacitors), B82Y (nanotechnology), and H10F (photovoltaic and light-sensitive devices) are significantly sparser, each with 13 or fewer records.
Two co-filing pairs are evident. Zhejiang Jinko Solar and Jinko Solar Co., Ltd. have 7 joint filings, reflecting intra-group coordination. The University of North Carolina at Chapel Hill and the Arizona Board of Regents (University of Arizona) have 6 joint filings, representing the leading academic collaboration in the space.
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Disclaimer. This page is generated from PatSnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
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