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Flash Infrared Annealing for Perovskite Solar Cell Processing
Published on: February 3, 2021
Plasma surface engineering for efficient and stable perovskite solar cells and modules
Rundong Fan1, Yue Ma1, Shuoyang Xu1
1Beijing Key Laboratory of New Generation Photovoltaic Materials and Technology Application, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, State Key Laboratory of Advanced Waterproof Materials, School of Materials Science and Engineering, Peking University, Beijing, P. R. China.
Science (New York, N.Y.)
|July 30, 2026
Summary
Plasma passivation enhances perovskite solar cell (PSC) stability by reducing interfacial defects. This scalable method boosts efficiency and longevity in large-area modules, improving solar energy conversion.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Perovskite solar cells (PSCs) suffer from instability due to interfacial defects.
- These defects arise from the soft, multicomponent perovskite lattice and processing methods.
- Module-level performance losses are often dominated by damage in interconnection regions.
Purpose of the Study:
- To develop a scalable passivation strategy for perovskite solar cells.
- To improve the stability and efficiency of PSCs, particularly at the module level.
- To address defect formation at interfaces and interconnection regions.
Main Methods:
- A scalable, plasma-based passivation technique was employed.
- In situ chemical reactions formed conformal, uniform heterostructures on perovskite films.
- The method mitigated defect accumulation in laser-scribed interconnection regions.
Main Results:
- Small-area devices achieved a power conversion efficiency (PCE) of 27.2%.
- Large-area modules (100 cm²) reached a certified PCE of 23.5%.
- Small-area devices retained 98.1% PCE after 2000 hours at 85°C; 100-cm² modules retained 99.3% PCE after 1600 hours at 65°C.
Conclusions:
- The plasma passivation strategy effectively enhances PSC stability and performance.
- This approach is suitable for large-area perovskite films and modules.
- The method addresses key degradation pathways, promising for commercial viability.
