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学科主题: 物理化学
题名: Visualizing Carrier Diffusion in Individual Single-Crystal Organolead Halide Perovskite Nanowires and Nanoplates
作者: Tian, Wenming1;  Zhao, Chunyi1, 2;  Leng, Jing1;  Gui, Rongrong1;  Jin, Shenge1
通讯作者: 金盛烨
刊名: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
发表日期: 2015-10-07
DOI: 10.1021/jacs.5b08045
卷: 137, 期:39, 页:12458-12461
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: Single-crystal CH3NH3PbX3 (X = I-, Cl-, Br-) perovskite nanowires (NWs) and nanoplates (NPs), which demonstrate ultracompact sizes and exceptional photophysical properties, offer promises for applications in nanoscale photonics and optoelectronics. However, traditional electronic and transient techniques are limited by the dimensions of the samples, and characterizations of the carrier behavior (diffusion coefficient, charge mobility and diffusion length) in these NWs and NPs are extremely difficult. Herein, we report the direct visualization of the carrier diffusion process in individual single-crystal CH3NH3PbI3 and CH3NH3PbBr3 NWs and NPs using time-resolved and photoluminescence-scanned imaging microscopy. We report the diffusion coefficient (charge motility), which varies significantly between different NWs and NPs, ranging from 1.59 to 2.41 cm(2) s(-1) (56.4 to 93.9 cm(2) V-1 s(-1)) for CH3NH3PbI3 and 0.50 to 1.44 cm(2) s(-1) (19.4 to 56.1 cm(2) V-1 s(-1)) for CH3NH3PbBr3 and find this variation is independent of the shape and size of the sample. The average diffusion length is 14.0 +/- 5.1 mu m for CH3NH3PbI3 and 6.0 +/- 1.6 mu m for CH3NH3PbBr3. These results provide information that is essential for the practical applications of the single-crystal perovskite NWs and NPs, and the imaging microscopy may also be applicable to other optoelectronic materials.
关键词[WOS]: SOLAR-CELLS ;  CHARGE-CARRIERS ;  EFFICIENCY ;  CH3NH3PBI3 ;  TRANSPORT ;  LENGTHS ;  GROWTH ;  PHOTOLUMINESCENCE ;  RECOMBINATION ;  PASSIVATION
语种: 英语
WOS记录号: WOS:000362628300010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/143732
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
2.Dalian Univ Technol, Sch Phys & Optoelect Engn, Dalian 116024, Peoples R China

Recommended Citation:
Tian, Wenming,Zhao, Chunyi,Leng, Jing,et al. Visualizing Carrier Diffusion in Individual Single-Crystal Organolead Halide Perovskite Nanowires and Nanoplates[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2015,137(39):12458-12461.
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