期刊
RSC ADVANCES
卷 8, 期 6, 页码 2900-2905出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra12521f
关键词
-
资金
- National Natural Science Foundation of China [51572241, 61704153, 51572033, 51172208, 11404029]
- Scientific Research Project for the Education Department of Zhejiang Province [Y201738294]
- Science and Technology Department of Zhejiang Province Foundation [2017C37017]
Methylammonium (MA) and formamidinium (FA) are two typical A site cations in lead halide perovskites. Instability of synthesised crystals will degrade the properties of the photoelectrical device constructed by such perovskites. MAPbI(3) and FAPbI(3) in cubic crystal structure have been demonstrated to be the most stable at room temperature. Herein we synthesised MA(EA) PbI3 and FA(MA) PbI3 single crystals using an inverse-temperature crystallization strategy by partially substituting the methylammonium (MA) with ethylammonium (EA) and the formamidinium (FA) with methylammonium (MA) respectively. The XRD results show that both crystal structures are cubic, which means organic incorporation can stabilize the crystal structure of lead halide perovskites. The lattice distortion decrease and strain relaxation in single crystals were considered to be the reason leading to higher stability. The single crystals of MA(EA) PbI3 and FA(MA) PbI3 with low trap state density exhibit excellent light-absorbing properties, indicating their potential applications in photoelectric devices.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据