Shape-Evolution Control of hybrid perovskite CH3NH3PbI3 crystals via solvothermal synthesis

被引：22

作者：

Zhang, Baohua ^{[1
,2
]}

Guo, Fuqiang ^{[2
]}

Yang, Lianhong ^{[2
]}

Jia, Xiuling ^{[1
]}

Liu, Bin ^{[1
]}

Xie, Zili ^{[1
]}

Chen, Dunjun ^{[1
]}

Lu, Hai ^{[1
]}

Zhang, Rong ^{[1
]}

Zheng, Youdou ^{[1
]}

机构：

[1] Nanjing Univ, Sch Elect Sci & Engn, Key Lab Adv Photon & Elect Mat, Nanjing 210093, Jiangsu, Peoples R China

[2] Changji Coll, Dept Phys, Changji 831100, Peoples R China

来源：

JOURNAL OF CRYSTAL GROWTH | 2017年 / 459卷

关键词：

Crystal morphology; Solvothermal crystal growth; Shape-Evolution Control; Perovskites; SOLAR-CELLS;

D O I：

10.1016/j.jcrysgro.2016.12.014

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

We systematically synthesized CH3NH3PbI3 crystals using solvothermal process, and the reaction conditions such as concentration of the precursor, temperature, time, and lead source have been comprehensively investigated to obtain shape-controlled CH3NH3PbI3 crystals. The results showed that the CH3NH3PbI3 crystals exhibit tetragonal phase and the crystals change from nanoparticles to hopper-faced cuboids. Photoluminescence spectra of the crystals obtained with different lead sources show a blue shift due to the presence of defects in the crystals, and the peak intensity is very sensitive to the lead sources. Moreover, impurities (undesirable byproducts and excess components like HI or CH3NH2) presented during crystal growth can result in hopper growth.

引用

页码：167 / 172

页数：6

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