The air and thermal stabilities of lead-free perovskite variant Cs2SnI6 powder
The air and thermal stabilities of lead-free perovskite variant Cs2SnI6 powder
复制标题
无铅钙钛矿变体 Cs2SnI6 粉末的空气和热稳定性
DOI：
10.1016/j.matlet.2017.04.046
复制
发表时间：
2017-07-15
影响因子：
3
通讯作者：
Cao, Bingqiang
中科院分区：
文献类型：
--
作者：
Jiang, Yanan;Zhang, Hailiang;Cao, Bingqiang
Cs2SnI6作为无机无铅钙钛矿变体，被认为是比甲基铵碘化铅钙钛矿更环境友好的光伏材料。然而，它的空气和热稳定性仍然不清楚。采用化学浴沉积法合成了Cs2SnI6粉体。研究了其晶相、形貌和振动特性。在相对湿度较高的空气中，其物相和形貌可保持一周甚至一个月以上。热稳定性测量表明Cs2SnI6在高达270摄氏度时是稳定的，然后分解为CsI和SnI4。这些结果为Cs_2SnI_6在更稳定的太阳能电池中的进一步应用铺平了道路。(C)2017爱思唯尔B.V.保留所有权利。
Cs2SnI6, as an inorganic lead-free perovskite variant, is regarded as a more environment friendly photovoltaic material than methylammonium lead iodide perovskite. However, its air and thermal stabilities still remain unclear. In this paper, Cs2SnI6 powders were synthesized via a chemical bath deposition method. The crystalline phases, morphologies, and vibrational properties were investigated. Moreover, its phase and morphology can retain in air with high relative humidity over a week even a month. The thermal stability measurements indicate Cs2SnI6 is stable up to 270 degrees C and then decomposes to CsI and SnI4. These results should pave the way for further application of Cs2SnI6 for more stable solar cells. (C) 2017 Elsevier B.V. All rights reserved.