Structural Damage of Two-Dimensional Organic-Inorganic Halide Perovskites

doi:10.3390/inorganics8020013

	Structural Damage of Two-Dimensional Organic-Inorganic Halide Perovskites
	Yuan, Biao1 ; Shi, Enzheng 2; Liang, Chao1 ; Dou, Letian 2; Yu, Yi1
	2020-02
发表期刊	INORGANICS
EISSN	2304-6740
卷号	8 期号:2
发表状态	已发表
DOI	10.3390/inorganics8020013
摘要	Organic-inorganic halide perovskites are promising photovoltaic materials with excellent optoelectronic properties. However, the extreme structural instability hinders their wide application as well as the microstructure characterization using high energy beams such as transmission electron microscopy (TEM). Here, taking BA(2)FAPb(2)I(7) and BA(2)MAPb(2)I(7) as examples, we investigate their structural evolution resulting from high energy electron irradiation, moist air, and low temperature, respectively. The results show that the long organic chains are the first to be damaged under electron beam, which is mainly arising from their instability and weak bonding with the framework of [PbI6](4-) octahedrons. Then the short organic cations and the framework of [PbI6](4-) octahedrons collapses gradually. The final products are clusters of detached PbI2 particles, which can also be observed in the sample degraded in moist air. In addition, the structures of BA(2)FAPb(2)I(7) and BA(2)MAPb(2)I(7) are discovered to undergo a phase transformation at liquid nitrogen temperature, which calls attention to the community that cryo-TEM methods should be used cautiously for organic-inorganic halide perovskite materials.
关键词	halide perovskite organic-inorganic electron irradiation structural damage
URL	查看原文
收录类别	ESCI ; SCIE
语种	英语
资助项目	National Natural Science Foundation of China[21805184] ; Natural Science Foundation of Shanghai[18ZR1425200]
WOS研究方向	Chemistry
WOS类目	Chemistry, Inorganic & Nuclear
WOS记录号	WOS:000519106400007
出版者	MDPI
原始文献类型	Article
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/122451
专题	物质科学与技术学院_硕士生物质科学与技术学院_PI研究组_于奕组物质科学与技术学院_博士生
通讯作者	Yu, Yi
作者单位	1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 2.Purdue Univ, Davidson Sch Chem Engn, W Lafayette, IN 47907 USA
第一作者单位	物质科学与技术学院
通讯作者单位	物质科学与技术学院
第一作者的第一单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Yuan, Biao,Shi, Enzheng,Liang, Chao,et al. Structural Damage of Two-Dimensional Organic-Inorganic Halide Perovskites[J]. INORGANICS,2020,8(2).
APA	Yuan, Biao,Shi, Enzheng,Liang, Chao,Dou, Letian,&Yu, Yi.(2020).Structural Damage of Two-Dimensional Organic-Inorganic Halide Perovskites.INORGANICS,8(2).
MLA	Yuan, Biao,et al."Structural Damage of Two-Dimensional Organic-Inorganic Halide Perovskites".INORGANICS 8.2(2020).