Chlorine capped SnO2 quantum-dots modified TiO2 electron selective layer to enhance the performance of planar perovskite solar cells

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2019,（8）
• 页码范围: 547-552
• 页数: 6页
• 语种: 英文

摘要

SnO2 quantum dots (QDs) ended with chlorine ions are introduced at the interface of spin-coated TiO2 electron selective layer (ESL)/perovskite to fill the pinholes in the layer and passivate the trapping defects. As a result of the increased interface electron collection and reduced bulk recombination, the planar perovskite solar cell with the QDs modified ESL gives the large power conversion efficiency enhancement from 14.9％ to 17.3％ and greatly improved stability under the continuous light irradiation.