Unveiling Structurally Engineered Carrier Dynamics in Hybrid   Quasi-Two-Dimensional Perovskite Thin Films toward Controllable Emission

doi:10.1021/acs.jpclett.7b01857

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	Unveiling Structurally Engineered Carrier Dynamics in Hybrid Quasi-Two-Dimensional Perovskite Thin Films toward Controllable Emission
	Shang, Qiuyu ; Wang, Yunuan ; Zhong, Yangguang ; Mi, Yang ; Qin, Liang ; Zhao, Yuefeng ; Qui, Xiaohui ; Liu, Xinfeng ; Zhang, Qing
刊名	JOURNAL OF PHYSICAL CHEMISTRY LETTERS
	2017
关键词	LIGHT-EMITTING-DIODES SOLAR-CELLS CH3NH3PBI3 ELECTRON SEMICONDUCTORS EFFICIENCY PHOTOLUMINESCENCE STABILITY EXCHANGE LENGTHS
DOI	10.1021/acs.jpclett.7b01857
英文摘要	Quasi-two-dimensional Ruddlesden-Popper perovskites driving carrier self separation have rapidly advanced the development of high-performance optoelectronic devices. However, insightful understanding of carrier dynamics in the perovskites is still inadequate. The distribution of multiple perovskite phases, crucial for carrier separation, is controversial. Here we report a systematic study on carrier dynamics of spin-coated (C6H5CH2CH2NH3)(2)(CH3NH3)(n-1)PbnI3n+1 (n = 3 and 5) perovskite thin films. Efficient electrons transfer from small-n to large-n perovskite phases, and holes transfer reversely with time scales from similar to 0.3 to 30.0 ps. The multiple perovskite phases are arranged perpendicularly to substrate from small to large n and also coexist randomly in the same horizontal planes. Further, the carrier separation dynamics is tailored by engineering the crystalline structure of the perovskite film, which leads to controllable emission properties. These results have important significance for the design of optoelectronic devices from solar cells, light-emitting diodes, lasers, and so forth.; Peking University; 1000 Talent Programs of China; Open Research Fund Program of the State Key Laboratory of Low Dimensional Quantum Physics; Ministry of Science and Technology [2017YFA0205700, 2017YFA0304600, 2016YFA0200700, 2017YFA0205004]; National Natural Science Foundation of China [21673054]; Key Research Program of Frontier Science; CAS [QYZDB-SSW-SYS031]; SCI(E); ARTICLE; 18; 4431-4438; 8
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/470776]
专题	工学院
推荐引用方式 GB/T 7714	Shang, Qiuyu,Wang, Yunuan,Zhong, Yangguang,et al. Unveiling Structurally Engineered Carrier Dynamics in Hybrid Quasi-Two-Dimensional Perovskite Thin Films toward Controllable Emission[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2017.
APA	Shang, Qiuyu.,Wang, Yunuan.,Zhong, Yangguang.,Mi, Yang.,Qin, Liang.,...&Zhang, Qing.(2017).Unveiling Structurally Engineered Carrier Dynamics in Hybrid Quasi-Two-Dimensional Perovskite Thin Films toward Controllable Emission.JOURNAL OF PHYSICAL CHEMISTRY LETTERS.
MLA	Shang, Qiuyu,et al."Unveiling Structurally Engineered Carrier Dynamics in Hybrid Quasi-Two-Dimensional Perovskite Thin Films toward Controllable Emission".JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2017).