结晶度
材料科学
锑
锡酸盐
能量转换效率
甲胺
相(物质)
退火(玻璃)
甲脒
氯化物
钙钛矿(结构)
化学工程
光电子学
复合材料
有机化学
化学
锌
工程类
冶金
作者
Yafei Zhang,Fangzhou Liu,Huhu Su,Yu Wang,Yu Zou,Cuncun Wu,Xian Zhang,Jiaqi Zhang,Yuan Liang,Jiaheng Han,Yan Guan,Yangyang Zhang,Zhengqing Ye,Ri Li,Lixin Xiao,Shijian Zheng
标识
DOI:10.1002/adfm.202304063
摘要
Abstract Lead‐free 2D antimony‐based halide perovskites with excellent optoelectronic properties, low toxicity, and good intrinsic stability are promising for photovoltaic devices. However, the power conversion efficiency (PCE) of antimony‐based perovskite solar cells (PSCs) is still lower than 3% due to the poor crystallinity and random orientation. Herein, it is found that the Cs 3 Sb 2 Cl x I 9‐x films prepared by adding methylamine chloride as an additive to the precursor solution can form a mixed intermediate phase with 0D dimer phase and 2D layered phase after low pressure treatment. During the annealing process, the 0D dimer phase will completely transition to 2D layered phase due to the partial replacement of I by Cl. Compared to adding SbCl 3 directly, this method considerably increases the crystallinity of Cs 3 Sb 2 I x Cl 9‐x films. The obtained films have a preferential orientation along the (201) direction, which is beneficial for charge carrier transportation. Consequently, the champion device shows a PCE of 3.2%, which is one of the highest efficiencies achieved for inorganic Sb‐based PSCs with the n‐i‐p architecture to date.
科研通智能强力驱动
Strongly Powered by AbleSci AI