Perovskite Silicon Tandem Solar Cell Patents 2026
Perovskite Silicon Tandem Solar Cell Patents 2026
Verified efficiencies now exceed 32.5% for perovskite/silicon tandem cells, with 2026 filings from Chint New Energy, Jinko Solar, and Hanwha Solutions signaling pre-production engineering. This dataset maps 40+ patent records across four dominant technology clusters.
How Perovskite/Silicon Tandems Break the Single-Junction Efficiency Ceiling
Perovskite/silicon tandem solar cells stack a wide-bandgap perovskite absorber (1.6–1.8 eV) atop a crystalline silicon bottom cell (bandgap ~1.12 eV), enabling absorption across a broader solar spectrum than either material alone. This architecture exceeds the Shockley–Queisser single-junction limit, which caps silicon-only cells near 29.4%, with verified tandem efficiencies now reaching 32.5%.
Three dominant interconnection architectures are documented in this dataset: two-terminal (2T) monolithic configurations — the dominant architecture in commercial-oriented filings — four-terminal (4T) mechanically stacked configurations where subcells operate independently, and emerging three-terminal (3T) configurations featuring bipolar transistor or middle-contact structures for improved energy yield under variable illumination.
Key functional sub-domains include interconnect and recombination junction engineering, transparent conductive oxide and metal grid electrode optimization, wide-bandgap perovskite composition engineering, silicon bottom cell selection across SHJ, TOPCon, PERC, and homojunction architectures, light management and antireflection coatings, large-area upscaling and deposition methods, and outdoor operational stability.
Innovation activity in retrieved records spans 2015–2026 and is moderately concentrated — Chinese industrial players hold the broadest patent volume and geographic breadth in this dataset, while Korean corporates and Saudi and Indian academic institutions provide meaningful parallel tracks. The International Technology Roadmap for Photovoltaics predicts a 5% market share for silicon-based tandems by 2029.
Patent Activity by Technology Cluster and Innovation Phase
The 40+ records in this dataset organize into four dominant technology clusters: recombination junction engineering, light management, silicon bottom cell compatibility, and multi-terminal or novel structural configurations. Filing activity accelerated sharply after 2021, with the most recent records dated 2026.
Patent Count by Technology Cluster — Perovskite/Silicon Tandem (Dataset Snapshot)
In this dataset, recombination junction engineering and light management each account for the largest patent clusters, with multi-terminal architectures representing an emerging but smaller share of filings.
↗ Click bars to exploreInnovation Phase Distribution — Perovskite/Silicon Tandem Filings by Period (Dataset Snapshot)
In this dataset, filing activity accelerated markedly from the Development Acceleration phase (2018–2021) onward, with the Commercialization Engineering phase (2024–2026) producing the most recent filings from Chint New Energy, Jinko Solar, and Hanwha Solutions.
↗ Click bars to exploreWhere Perovskite/Silicon Tandems Are Being Deployed and Tested
Patents and literature in this dataset address four principal deployment contexts for perovskite/silicon tandem solar cells — from utility-scale ground-mount systems to harsh-climate outdoor field testing — each with distinct engineering requirements and performance benchmarks documented in retrieved records.
Utility-Scale Ground-Mount PV
The primary commercial target for perovskite/silicon tandems, with multiple patents from Tongwei Solar, Trina Solar, and Jinko Solar explicitly addressing Czochralski silicon wafer compatibility and large-area electrode architecture. A 27.9% PCE demonstration on industry-compatible Czochralski substrates validated industrial relevance. The International Technology Roadmap for Photovoltaics predicts a 5% market share for silicon-based tandems by 2029.
Utility PVBuilding-Integrated PV Japan
A dedicated modeling study optimized 2T perovskite/silicon tandems for rooftop and facade installation in Japan, finding annual efficiencies of 22.42% for rooftop and 19.70% for south facade under realistic conditions. Bifacial tandem designs from Hanwha Solutions’ 2025 EP filing on rear-side light capture are directly relevant to facade-integrated applications.
Building-Integrated PVSaudi Arabia Red Sea Coast Site
A one-year outdoor trial at Saudi Arabia’s Red Sea coast demonstrated that monolithic perovskite/silicon tandem solar cells retained 80% PCE after 12 months of operation in hot and humid conditions. Identified failure modes included spectral mismatch due to soiling and seasonal solar spectrum shifts, providing critical design parameters for Middle Eastern and North African markets.
Outdoor Field TestingFlexible Lightweight PV Systems
Literature in this dataset covers perovskite/CIS thin-film tandems with 23.5% certified efficiency and all-perovskite tandem modules processed via blade coating and vacuum deposition, exploring non-rigid form factors for lightweight applications. Scalable two-terminal all-perovskite tandem solar modules have demonstrated 19.1% efficiency at module scale. This application domain remains primarily at the research stage within retrieved records.
Flexible PVLeading Assignees in Perovskite/Silicon Tandems — Dataset Snapshot
In this dataset, King Fahd University of Petroleum and Minerals holds the highest individual filing count with 5 US patents (2021–2024), while Chinese industrial players including Tongwei Solar, Trina Solar, Chint New Energy, and Jinko Solar account for the broadest geographic IP footprint in retrieved records, filing simultaneously across US, EP, and AU jurisdictions.
Top Patent Assignees by Filing Count in Retrieved Records (Dataset Snapshot)
↗ Click bars to exploreTongwei Solar (Chengdu) Co., Ltd.
Tongwei Solar holds 4 patents in this dataset across US, EP, and AU jurisdictions filed between 2023 and 2025, focused exclusively on tunneling junction architecture using seed crystal amorphous silicon layers and doped microcrystalline silicon oxide tunneling layers to improve open-circuit voltage. Filings include a 2024 US patent on seed crystal amorphous silicon plus microcrystalline silicon oxide and a 2023 EP consolidation for European market entry. Patent status spans active US and EP filings.
ChinaKing Fahd Univ of Petroleum and Minerals
King Fahd University of Petroleum and Minerals holds 5 US patents in this dataset filed between 2021 and 2024, the highest individual count among all assignees in retrieved records. Technology focus spans photon management (Ho³⁺, Tm³⁺, Er³⁺-doped ZrO₂ upconverters), three-terminal tandem architectures, and SiO₂ antireflection coatings. Patents include active US filings on photon upconverters enabling claimed efficiencies above 30% and a 2023 three-terminal tandem cell with TCO middle contact.
Saudi Arabia — US filingsFive Convergent Directions Signaling Commercialization Readiness in 2025–2026
The most recent filings (2025–2026) in this dataset reveal five convergent engineering directions that move perovskite/silicon tandem technology from laboratory efficiency records toward module-scale production readiness.
Near-Infrared Down-Conversion Layers for Current Mismatch Resolution
Chint New Energy Technology’s 2026 dual-jurisdiction filings (AU and EP) introduce near-infrared down-conversion thin films on the incident surface of 2T tandems to resolve current mismatch — a previously underaddressed bottleneck for 2T commercial modules. This approach converts short-wavelength solar photons to long-wavelength light, improving current balance between the perovskite top cell and silicon bottom cell without structural redesign.
Module-Level Electrode Grid Alignment for Cell-to-Module Efficiency
Jinko Solar’s 2026 EP filing describes module-level tandem architectures with aligned metal grid lines between perovskite cells and silicon busbars, directly addressing the cell-to-module efficiency gap that erodes lab-to-product performance. The gap between small-area certified cell records above 32% and large-area module demonstrations below 25% is identified in this dataset as the defining commercialization bottleneck. Electrode alignment is positioned as a primary engineering solution.
Two-Terminal vs Four-Terminal Perovskite/Silicon Tandem Architectures
Click any row to explore further.
| Dimension | Two-Terminal (2T) Monolithic | Four-Terminal (4T) Mechanically Stacked |
|---|---|---|
| Integration | Single series-connected device sharing a recombination junction | Subcells operate independently; mechanically stacked |
| Current Matching | Required — both subcells must be current-matched | Not required — relaxes current-matching constraints |
| Commercial Dominance | Dominant architecture in commercial-oriented filings in this dataset | Less represented in commercial filings in this dataset |
| Key Engineering Target | Recombination/interconnect junction layer (microcrystalline Si oxide tunneling layers) | Optical coupling complexity at the mechanical interface |
| Efficiency Benchmark | Verified 32.5% (European Solar Test Installation); 27.9% on Czochralski substrates | N/A (specific 4T efficiency benchmark not cited in dataset) |
| Key Assignees (Dataset) | Tongwei Solar, Advanced Solar Technology Institute, Chint New Energy, Jinko Solar | N/A |
| Light Management Challenge | Current mismatch addressed via near-infrared down-conversion films (Chint, 2026) | Additional optical coupling complexity between mechanically stacked subcells |
| Outdoor Durability Data | 80% PCE retained after one year at Saudi Arabia Red Sea coast (monolithic) | N/A (no specific outdoor durability data in dataset) |
Frequently Asked Questions: Perovskite/Silicon Tandem Solar Cells
Within this dataset, the highest verified efficiency cited is 32.5%, confirmed by the European Solar Test Installation. A trajectory toward 38%+ is referenced under optimized real-world conditions.
The three dominant architectures documented in this dataset are: two-terminal (2T) monolithic, where both subcells are series-connected in a single device; four-terminal (4T) mechanically stacked, where subcells operate independently; and three-terminal (3T) configurations featuring bipolar transistor or middle-contact structures for improved energy yield under variable illumination.
King Fahd University of Petroleum and Minerals holds the highest individual count with 5 US patents (2021–2024). Tongwei Solar (Chengdu), Seoul National University R&DB Foundation, and Trina Solar each hold 4 patents in retrieved records. Advanced Solar Technology Institute, Xuancheng holds 3.
One full-year outdoor dataset was identified in this landscape: a field trial at Saudi Arabia’s Red Sea coast where monolithic perovskite/silicon tandem cells retained 80% PCE after 12 months. Identified failure modes included spectral mismatch due to soiling and seasonal solar spectrum shifts.
Based on this dataset, the transition from cell to module efficiency is described as the most pressing bottleneck. The gap between small-area certified cell records above 32% and large-area module demonstrations below 25% is the defining challenge, with electrode grid alignment, laser scribing, and deposition uniformity at module scale identified as priority engineering targets.
The most recent filings (2025–2026) in this dataset reveal five directions: near-infrared down-conversion layers (Chint New Energy, AU and EP, 2026), bifacial tandem architectures (Hanwha Solutions, EP, 2025), module-level electrode grid alignment (Jinko Solar, EP, 2026), 3D silicon nanowire bottom cell frameworks (Hefei Polytechnic University, US, 2025), and organic planarization and particle confinement interlayers (Hanwha Solutions, IN, 2026).
Data and insights on this page are based on a limited patent and literature dataset and are for reference only. Figures may not represent the complete technology landscape.