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Updated: Feb 8, 2026
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Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
Published on: March 19, 2017
17.2K
Threonine: a universal single-molecule bifunctional modifier for efficient and stable perovskite solar cells and
Qinxue Wang1, Yu Wang1, Chu Zhang1
1College of Materials and Chemistry, China Jiliang University, 258 Xue Yuan Street, Qiantang District, Hangzhou, Zhejiang 310018, PR China. wangyu19920924@cjlu.edu.cn.
Chemical Communications (Cambridge, England)
|February 6, 2026
Summary
Threonine-modified tin oxide (SnO2) boosts perovskite solar cell efficiency to 24.12%. This advancement also enhances device stability and module performance for both rigid and flexible applications.
Area of Science:
- Materials Science
- Renewable Energy
- Semiconductor Physics
Background:
- Perovskite solar cells (PSCs) offer high power conversion efficiencies (PCEs) but face challenges in long-term stability.
- Tin oxide (SnO2) is a common electron transport layer (ETL) in PSCs, influencing device performance and stability.
- Surface modification of ETLs is a key strategy to improve PSCs.
Purpose of the Study:
- To investigate the effect of threonine modification on SnO2 ETLs for PSCs.
- To enhance the PCE and operational stability of perovskite solar cells.
- To evaluate the scalability of threonine-modified SnO2 for large-area modules.
Main Methods:
- Synthesis of threonine-modified SnO2 nanoparticles.
- Fabrication of small-area (0.06 cm2) perovskite solar cells using the modified SnO2 ETL.
- Fabrication of large-area (10 × 10 cm2) rigid and flexible perovskite solar cell modules.
- Performance characterization including power conversion efficiency (PCE) and stability testing.
Main Results:
- Perovskite solar cells with threonine-modified SnO2 achieved a champion PCE of 24.12%.
- Improved device stability was observed with the threonine-modified SnO2 ETL.
- Large-area rigid modules reached 18.26% PCE, and flexible modules achieved 15.17% PCE.
Conclusions:
- Threonine modification of SnO2 is an effective strategy for enhancing both the efficiency and stability of perovskite solar cells.
- The developed material demonstrates potential for scalable manufacturing of high-performance rigid and flexible perovskite solar modules.
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