Dong Pei, Yuan Shuai, Zhu Dongping, Du Yaxin, Mu Cheng, Ai Xi-Cheng
Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China Beijing 100872 China
RSC Adv. 2022 May 9;12(22):13820-13825. doi: 10.1039/d2ra01913b. eCollection 2022 May 5.
SnO is a promising electron transport layer (ETL) material with important applications in planar perovskite solar cells (PSCs). However, electron-hole recombination and charge extraction between SnO and the perovskite layer necessitates further exploration. Nickel chloride hexahydrate (NiCl·6HO) was introduced into the SnO ETL, which significantly increased the power conversion efficiency (PCE) from 15.49 to 17.36% and the open-circuit voltage ( ) from 1.078 to 1.104 V. The improved PCE and were attributed to the reduced defect states and increased energy level of the conduction band minimum. This work provides new insights into optimizing the and PCE of PSCs.
SnO是一种很有前景的电子传输层（ETL）材料，在平面钙钛矿太阳能电池（PSC）中具有重要应用。然而，SnO与钙钛矿层之间的电子 - 空穴复合以及电荷提取需要进一步探索。将六水合氯化镍（NiCl·6H₂O）引入到SnO电子传输层中，这显著提高了功率转换效率（PCE），从15.49%提高到17.36%，开路电压（Voc）从1.078 V提高到1.104 V。PCE和Voc的提高归因于缺陷态的减少和导带最小值能级的增加。这项工作为优化PSC的Voc和PCE提供了新的见解。
