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Updated: Feb 7, 2026
05:15
Flash Infrared Annealing for Perovskite Solar Cell Processing
Published on: February 3, 2021
8.7K
Perovskite/Silicon Tandem Solar Cells With Stabilized Grain Boundaries.
Jixiang Zhang1,2,3, Yao Zhang1,2, Zhongxun Yu1,2,3
1State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, China.
Advanced Materials (Deerfield Beach, Fla.)
|February 5, 2026
Summary
Researchers stabilized wide-bandgap perovskites using a cross-linking agent, improving solar cell efficiency and operational stability. This breakthrough enhances perovskite/silicon tandem solar cell performance and longevity.
Area of Science:
- Materials Science
- Photovoltaics
- Solid-State Chemistry
Background:
- Wide-bandgap perovskites (near 1.68 eV) are crucial for perovskite/silicon tandem solar cells.
- These perovskites suffer from light-induced halide segregation, leading to performance and stability issues.
Purpose of the Study:
- To stabilize the iodide-bromide mixed perovskite lattice in wide-bandgap absorbers.
- To enhance the performance and operational stability of perovskite/silicon tandem solar cells.
Main Methods:
- Incorporation of a symmetric cross-linking agent, 4,4'-oxydibenzenesulfonyl hydrazide, during film growth.
- Regulation of perovskite crystallization and assembly of the agent at grain boundaries.
- Stabilization of perovskite grain surfaces and chemically active boundary regions.
Main Results:
- Achieved photostable wide-bandgap perovskites with enhanced crystallinity and reduced band-tail states.
- Suppressed halide segregation and lattice decomposition.
- 1.68 eV single-junction devices reached 23.48% efficiency; tandem devices achieved 32.19% efficiency.
- Tandem devices retained 90% of initial efficiency after 1020 hours of operation.
Conclusions:
- The cross-linking agent effectively stabilizes wide-bandgap perovskite films.
- This stabilization strategy significantly boosts the efficiency and long-term operational stability of perovskite/silicon tandem solar cells.
- The developed materials and methods pave the way for more robust and efficient next-generation solar technologies.
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