Lead-Free Perovskite Substitution Patent Snapshot 2026
The lead-free perovskite substitution field holds 33 patent families in scope and is in a Growth stage, with the field expanding strongly on a multi-year basis — though annual volume has eased from its 2023 peak. International Business Machines Corporation leads all filers, but the field remains fragmented across universities and research institutes, with China the dominant filing jurisdiction.
IBM leads a fragmented, university-heavy field
International Business Machines Corporation ranks first among all filers, with 4 patent records — ahead of Jilin University at 3 and a cluster of institutions each holding 2. The ranking reflects a nascent visible assignee structure dominated by academic and research organisations rather than vertically integrated manufacturers.
The top five filers account for 31% of the combined total across the ranked applicants visible in this query, indicating moderate-to-low concentration. No single player has established a visible position, and the gap between the leader and the second tier is narrow — just one patent record separates IBM from Jilin University.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | International Business Machines Corporation | 4 | |
| 2 | Jilin University | 3 | |
| 3 | Soochow University | 2 | |
| 4 | Prince Mohammad Bin Fahd University | 2 | |
| 5 | National Institute of Technology Patna | 2 | |
| 6 | Changzhou University | 2 | |
| 7 | Fujian Jiangxia University | 2 | |
| 8 | Zishi Energy Co., Ltd. | 2 | |
| 9 | Fujian Province Institute of Metrology Science and Research | 1 | |
| 10 | Nanjing Tech University | 1 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | ShanghaiTech University | 1 | |
| 12 | Tan Kah Kee Innovation Laboratory | 1 | |
| 13 | Optics Valley Laboratory | 1 | |
| 14 | Henan University | 1 | |
| 15 | KIIT University (Kalinga Institute of Industrial Technology) | 1 | |
| 16 | Huadian Electric Power Science Institute Co., Ltd. | 1 | |
| 17 | KHALSA COLLEGE OF ENG & TECH | 1 | |
| 18 | Nanjing University | 1 | |
| 19 | KIIT University (Kalinga Institute of Industrial Technology) | 1 | |
| 20 | HUAZHONG UNIV OF SCI & TECH | 1 |
IBM’s position is notable precisely because it is the only large technology corporation among the leaders; all other top-ranked filers are universities or national institutes. This suggests the commercial translation layer — from academic proof-of-concept to industrially deployable devices — remains largely unclaimed.
The most recent 18–24 months of filings are subject to publication lag and are likely under-counted; conclusions about pace of change should weight the 2021–2023 data more heavily. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A 2023 filing surge anchors a still-expanding growth curve
Annual filing volume and the technology branch mix together reveal both the pace of interest and the sub-fields attracting the most attention within lead-free perovskite substitution.
Annual filing trend
Activity was minimal from 2017 through 2022 (one to two filings per year, with zero in 2019), then surged to eleven records in 2023 before easing. The 2024 figure of three and the partial 2025 figure of eleven should both be treated as understated due to publication lag; the field’s multi-year growth of 700% versus the prior three-year window confirms continued expansion despite the apparent post-2023 moderation.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H10K (organic semiconductors, including perovskite solar cell architectures) is the overwhelming visible branch with 31 patent records, reflecting the photovoltaic application focus of this corpus. H01L (semiconductor devices) is the second branch at 11 records. Coating processes, capacitors, catalysis, and nanotechnology each appear at two records or fewer, marking them as sparsely covered adjacent branches.
↗ 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.
Efficient and stable inorganic lead-free perovskit…
The disclosure provides an efficient and stable inorganic lead-free perovskite solar cell and a method for preparing the same. The solar cell includes a conductive substrate, a PEDOT: PSS layer, an inorganic lead-free CsSnI<sub>3 </sub>perovskite layer, a C60 layer, a BCP layer, and a metal counter electrode layer arranged in order from bottom to top… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Monolithic Tandem Chalcopyrite-Perovskite Photovol… | 44 |
| 2 | Tandem Kesterite-Perovskite Photovoltaic Device | 33 |
| 3 | 一种全无机无铅钙钛矿太阳能电池 | 9 |
| 4 | 一种无铅钙钛矿太阳能电池及其制备方法 | 7 |
| 5 | 一种钙钛矿薄膜的制备方法及应用 | 5 |
| 6 | 一种全无机无铅钙钛矿太阳能电池 | 5 |
| 7 | 一种锡基钙钛矿光伏器件及其制备方法 | 4 |
| 8 | 一种表面抛光的锡铅钙钛矿太阳能电池及制备方法 | 3 |
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.
International Business Machines Corporation
IBM holds 4 patent records, the highest count among all filers. Its technical emphasis spans H01L 31 (semiconductor photovoltaic devices), H10K 99 (organic semiconductor architectures), and H01L 27 (integrated semiconductor devices), indicating a systems-level integration focus rather than a narrow materials play. IBM is the sole large technology corporation in the top tier; no momentum trend is available for this applicant in the current evidence window.
patent records: 4Jilin University
Jilin University holds 3 patent records and entered as a new entrant in the recent filing window. Its work concentrates on H10K 30 (organic semiconductor solar cells) and H10K 71 (organic semiconductor fabrication processes), with additional coverage of H10K 85 (organic semiconductor materials), placing it squarely in the perovskite device architecture and processing sub-field.
patent records: 3Frequently asked questions
The current evidence covers 33 patent families in scope. This is a small but fast-growing corpus; the field recorded negligible filings before 2022 and then surged to eleven records in 2023.
International Business Machines Corporation leads with 4 patent records, followed by Jilin University with 3. IBM is the only large technology corporation in the top tier; all other visible assignees are universities or research institutes.
Concentration is low. The top five filers account for 31% of the combined total across the ranked applicants visible in this query, and the leader holds only 4 patent records. No filer has assembled a blocking portfolio, leaving the assignee snapshot open to new entrants.
China accounts for 21 patent records, the United States for 8, and India for 6. WIPO (PCT) coverage stands at 1 record, indicating most applicants have not yet pursued broad international protection strategies.
H10K (organic semiconductors, which in this context covers perovskite solar cell device architectures) is visible in with 31 patent records. H01L (semiconductor devices) is the secondary branch at 11 records. All other IPC classes appear at 2 records or fewer.
Yes, on a multi-year basis: the recent three-year filing window is 700% above the prior three-year window, placing the field in a Growth stage. Annual volume peaked in 2023 and has eased since, though filings from 2024 onward are likely under-counted due to patent publication lag.
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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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