Controlled Substitution of Chlorine for Iodine in Single-Crystal Nanofibers of Mixed Perovskite MAPbI(3-x)Cl(x)

	Controlled Substitution of Chlorine for Iodine in Single-Crystal Nanofibers of Mixed Perovskite MAPbI(3-x)Cl(x)
	Zhang, Haihua 1; Liao, Qing 1; Wang, Xuedong 2; Hu, Ke 1; Yao, Jiannian 1,2; Fu, Hongbing 1,2,3
刊名	SMALL
	2016-07-27
卷号	12 期号:28 页码:3780-3787
英文摘要	Longer carrier diffusion length and improved power conversion efficiency have been reported for thin-film solar cell of organolead mixed-halide perovskite MAPbI(3-x)Cl(x) in comparison with MAPbI(3). Instead of substituting I in the MAPbI(3) lattice, Cl-incorporation has been shown to mainly improve the film morphology of perovskite absorber. Well-defined crystal structure, adjustable composition (x), and regular morphology, remains a formidable task. Herein, a facile solution-assembly method is reported for synthesizing single-crystalline nanofibers (NFs) of tetragonal-lattice MAPbI(3-x)Cl(x) with the Cl-content adjustable between 0 <= x <= 0.75, leading to a gradual blueshift of the absorption and photoluminescence maxima from x = 0 to 0.75. The photoresponsivity (R) of MAPbI(3) NFs keeps almost unchanging at a value independent of the white-light illumination intensity (P). In contrast, R of MAPbI(3-x)Cl(x) NFs decreases rapidly with increasing both the x and P values, indicating Cl-substitution increases the recombination traps of photogenerated free electrons and holes. This study provides a model system to examine the role of extrinsic Cl ions in both perovskite crystallography and optoelectronic properties.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/35318]
专题	化学研究所_光化学实验室
作者单位	1.Capital Normal Univ, Dept Chem, Beijing Key Lab Opt Mat & Photon Devices, Beijing 100048, Peoples R China 2.Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100190, Peoples R China 3.Tianjin Univ, Dept Chem, Tianjin Key Lab Mol Optoelect Sci, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Haihua,Liao, Qing,Wang, Xuedong,et al. Controlled Substitution of Chlorine for Iodine in Single-Crystal Nanofibers of Mixed Perovskite MAPbI(3-x)Cl(x)[J]. SMALL,2016,12(28):3780-3787.
APA	Zhang, Haihua,Liao, Qing,Wang, Xuedong,Hu, Ke,Yao, Jiannian,&Fu, Hongbing.(2016).Controlled Substitution of Chlorine for Iodine in Single-Crystal Nanofibers of Mixed Perovskite MAPbI(3-x)Cl(x).SMALL,12(28),3780-3787.
MLA	Zhang, Haihua,et al."Controlled Substitution of Chlorine for Iodine in Single-Crystal Nanofibers of Mixed Perovskite MAPbI(3-x)Cl(x)".SMALL 12.28(2016):3780-3787.