Photo-assisted Cl doping of SnO2 electron transport layer for hysteresis-less perovskite solar cells with enhanced efficiency

• 作者: Jin-Bo Wu Chao Zhen Gang Liu
• 来源期刊: 稀有金属（英文版）
• 年，卷（期）: 2022,（2）
• 所属期刊栏目: LETTERS
• 页码范围: 361-367
• 页数: 7页
• 语种: 英文

摘要

Developing efficient electron transport layers (ETLs) along with proper interface engineering is crucial to achieve high-performance perovskite solar cells (PSCs).Herein,a photo-assisted doping strategy was developed to modify SnO2 ETLs with Cl-for efficient PSCs.The Cl-modified SnO2 (Cl-SnO2) with passivated surface defects as ETL material favors the formation of high phase-purity per-ovskite films and promotes the electron collection across the SnO2/perovskite interface.Consequently,the efficiency of PSC is improved from 16.35％ without Cl modification to 18.94％ with the Cl modification,with little hysteresis and high stability.