Luo Shiqiang, Daoud Walid A
School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Hong Kong, China.
Materials (Basel). 2016 Feb 24;9(3):123. doi: 10.3390/ma9030123.
Inorganic-organic hydride perovskites bring the hope for fabricating low-cost and large-scale solar cells. At the beginning of the research, two open questions were raised: the hysteresis effect and the role of chloride. The presence of chloride significantly improves the crystallization and charge transfer property of the perovskite. However, though the long held debate over of the existence of chloride in the perovskite seems to have now come to a conclusion, no prior work has been carried out focusing on the role of chloride on the electronic performance and the crystallization of the perovskite. Furthermore, current reports on the crystal structure of the perovskite are rather confusing. This article analyzes the role of chloride in CH₃NH₃PbICl on the crystal orientation and provides a new explanation about the (110)-oriented growth of CH₃NH₃PbI₃ and CH₃NH₃PbICl.
无机-有机氢化物钙钛矿为制造低成本、大规模太阳能电池带来了希望。在研究初期，提出了两个开放性问题：滞后效应和氯的作用。氯的存在显著改善了钙钛矿的结晶和电荷转移性能。然而，尽管长期以来关于钙钛矿中氯的存在的争论似乎现已得出结论，但此前尚未开展聚焦于氯对钙钛矿电子性能和结晶作用的工作。此外，目前关于钙钛矿晶体结构的报道相当混乱。本文分析了氯在CH₃NH₃PbICl中对晶体取向的作用，并对CH₃NH₃PbI₃和CH₃NH₃PbICl的(110)取向生长提供了新的解释。
