Perovskite PL Imaging & QC Patent Snapshot 2026
Perovskite photoluminescence imaging and QC is an early-stage, highly concentrated field with 25 patent families dominated by a small cluster of corporate and academic filers, with China and Korea accounting for the largest share of activity. Meaningful patent volume only appeared from 2022 onward, and every ranked applicant entered recently, signaling that the competitive structure is still being established.
Energy Materials Corp leads a tightly held field with no entrenched second tier
Energy Materials Corp holds the top position with 5 patent families, followed by Hanwha Solutions Corp with 4. Together they account for roughly half of the top hundred filers’ combined total, confirming a high degree of concentration at the very top.
The top five filers’ share of the ranked applicants visible in this query is 50%, a level that indicates early-mover advantages are being staked but that the gap between the leader and the rest of the field remains narrow enough for challengers to close. No applicant outside the top two has more than 2 patent families.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Energy Materials Corp | 5 | |
| 2 | Hanwha Solutions Corp | 4 | |
| 3 | Kookmin University Industry-Academic Cooperation Foundation | 2 | |
| 4 | Daegu Gyeongbuk Institute of Science and Technology | 2 | |
| 5 | Shenzhen Institute of Advanced Technology | 2 | |
| 6 | Shenzhen Hiking PV Technology Co., Ltd. | 1 | |
| 7 | Wuxi Utmost Light Technology Co., Ltd. | 1 | |
| 8 | Soochow University | 1 | |
| 9 | KHALSA COLLEGE OF ENG & TECH | 1 | |
| 10 | Longzihu New Energy Laboratory | 1 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | Central South University | 1 | |
| 12 | Contemporary Amperex Future Energy Research Institute (Shanghai) | 1 | |
| 13 | HUAZHONG UNIV OF SCI & TECH | 1 | |
| 14 | Yonsei University Industry-Academic Cooperation Foundation | 1 | |
| 15 | Changchun University of Technology | 1 | |
| 16 | HUBEI UNIV OF ARTS & SCI | 1 | |
| 17 | Contemporary Amperex Technology Co., Ltd. | 1 | |
| 18 | Shaanxi Normal University | 1 | |
| 19 | National Institute of Technology Delhi | 1 | |
| 20 | Institute of Process Engineering, Chinese Academy of Sciences | 1 |
The leaders’ positions imply they are defining initial claim boundaries in perovskite device fabrication and film characterization; entrants arriving now face a thin but real prior-art base concentrated in device-layer and coating technology rather than in dedicated imaging or QC instrumentation.
The most recent 18–24 months of filing data are subject to publication lag and likely undercount actual activity; the field’s true current pace may be higher than the 2024–2026 figures suggest. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A 2023 filing surge defined the field; device-layer IPC classes dominate
The annual filing trend and technology composition together reveal a field that emerged practically overnight in 2023 and is anchored in organic semiconductor and photovoltaic device classifications rather than in measurement or inspection classes.
Annual filing trend
Zero or negligible filings were recorded from 2017 through 2021. A single filing appeared in 2022, followed by a sharp jump to 15 patent families in 2023 — the defining year for this space. Filings in 2024 and 2025 stand at 4 each, with 1 recorded so far in 2026; these recent figures are almost certainly under-counted due to publication lag and should not be read as a slowdown.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H10K (organic semiconductors, including OLED-adjacent device structures) is by far the visible IPC class, reflecting that most filings address perovskite device architecture rather than standalone imaging or QC instrumentation. H10F (photovoltaic and light-sensitive devices) is the next most represented class. Notably, G01N (material analysis and testing) — the class most directly aligned with QC and characterization — appears only once, indicating that the inspection and measurement angle remains a relatively sparse area within the current corpus.
↗ 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.
Electron transport layer for perovskite solar cell…
The present disclosure relates to an electron transport layer for a perovskite solar cell, which is tin oxide (SnO<sub>2-x</sub>, 0<x<1) comprising oxygen vacancies, wherein the oxygen vacancies are passivated by oxidized black phosphorus quantum dots (O-BPs), and a perovskite solar cell including the same. The electron transport layer for a perovskite… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | 一种钙钛矿吸收层及其制备方法、聚离子液体-离子液体协同修饰的钙钛矿太阳能电池 | 1 |
| 2 | 一种大面积钙钛矿薄膜及其制备方法、钙钛矿太阳能电池及无划线太阳能电池组件 | 1 |
| 3 | Electron transport layer for perovskite solar cell… | 1 |
| 4 | 一种钙钛矿太阳能电池组件及大面积均匀钙钛矿薄膜的制备方法 | 1 |
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.
Assignee snapshot from the current evidence set
The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.
Energy Materials Corp
Energy Materials Corp holds 5 patent families and is a new entrant across all recent filings. Its technology focus is concentrated in H10K30 (organic semiconductor device structures) and spans both H10F77 (photovoltaic and light-sensitive devices) and H10K85, indicating a broad device-layer approach that covers both the active perovskite layer and adjacent charge-transport architectures.
families: 5Hanwha Solutions Corp
Hanwha Solutions Corp holds 4 patent families and is also a new entrant. Its portfolio is notably differentiated from the leader’s: alongside H10K30, it covers C01G21 (compounds of other metals, relevant to lead halide perovskite chemistry) and C09D1 (coatings and inks), suggesting a materials-and-deposition angle that could underpin process-control and large-area fabrication claims.
families: 4Frequently asked questions
The corpus in scope contains 25 patent families. This is a small corpus reflecting the field’s recency — substantive filing activity only began in 2022.
Energy Materials Corp leads with 5 patent families. Hanwha Solutions Corp is second with 4. Both are classified as new entrants, meaning their entire filing history in this area falls within the most recent measurement window.
China is the leading jurisdiction with 10 patent records, followed by Europe (EPO) with 6 and the United States with 5. Three PCT filings indicate some applicants are seeking broader international coverage.
H10K (organic semiconductors and related device structures) accounts for the largest share of patent records, followed by H10F (photovoltaic and light-sensitive devices). The QC-specific class G01N (material analysis and testing) appears only once, indicating that dedicated inspection methodology is largely unclaimed in this corpus.
Two co-filing pairs are recorded: Daegu Gyeongbuk Institute of Science and Technology with Kookmin University (2 joint filings), and Longzihu New Energy Laboratory with the Institute of Process Engineering, Chinese Academy of Sciences (1 joint filing). Both are institution-to-institution collaborations.
The G01N (material analysis and testing) branch holds only 1 patent record despite being the class most directly relevant to PL-based inspection and QC. Organic and heterocyclic compound classes (C07C, C07D) each hold 1 record, leaving molecular precursor and passivation-probe chemistry comparatively open within this specific PL-QC context.
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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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