[Wang, Haiou; Zhao, Bojun; Wang, Haochen] Hangzhou Dianzi Univ, Coll Mat & Environm Engn, Key Lab Novel Mat Sensor Zhejiang Prov, Hangzhou 310018, Peoples R China.
[Tan, Weishi] Hunan City Univ, Coll Informat & Elect Engn, All Solid State Energy Storage Mat & Devices, Key Lab Hunan Prov, Yiyang 413002, Peoples R China.
This study was funded by National Natural Science Foundation of China, 11604067, Haiou Wang, U1832143, Weishi Tan.
机构署名：
本校为通讯机构
院系归属：
信息与电子工程学院
摘要：
Cesium tin iodide (CsSnI3) is a promising lead-free alternative to traditional lead-based perovskites due to its superior optoelectronic properties and eco-friendly nature. However, its structural instability and the propensity of tin (Sn) to oxidize pose significant challenges. In this work, we address these issues by fine-tuning the synthesis parameters of CsSnI3. We adjusted the precursor feed ratio to 1.1:1 (CsI to SnI2) and incorporated 2% by mass of tin powder. This modification optimizes the crystal structure of CsSnI3 and maintains its chemical purity without requiring complex procedur...
