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Lead-Free Direct Band Gap Double-Perovskite Nanocrystals with Bright Dual-Color Emission

文献类型：期刊论文

作者Yang, Songqiu2; Han, Keli1,2; Yang, Bin2,4; Mao, Xin2,4; Hong, Fen2,4; Meng, Weiwei5,6; Tang, Yuxuan2,4; Xia, Xusheng3,4; Deng, Weiqiao1,2
刊名JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
出版日期2018-12-12
卷号140期号:49页码:17001-17006
ISSN号0002-7863
DOI10.1021/jacs.8b07424
通讯作者Han, Keli(klhan@dicp.ac.cn)
英文摘要Lead-free double-perovskite nanocrystals (NCs), that is, Cs2AgInxBi1-xCl6 (x = 0, 0.25, 0.5, 0.75, and 0.9), that can be tuned from indirect band gap (x = 0, 0.2S, and 0.5) to direct band gap (x = 0.75 and 0.9) are designed. Direct band gap NCs exhibit 3 times greater absorption cross section, lower sub band gap trap states, and >5 times photoluminescence quantum efficiency (PLQE) compared to those observed for indirect band gap NCs (Cs2AgBiCl6). A PLQE of 36.6% for direct band gap NCs is comparable to those observed for lead perovskite NCs in the violet region. Besides the band edge violet emission, the direct band gap NCs exhibit bright orange (570 nm) emission. Density functional theory calculations suggesting forbidden transition is responsible for the orange emission, which is supported by time-presolved PL and PL excitation spectra. The successful design of lead-free direct band gap perovskite NCs with superior optical properties opens the door for high-performance lead-free perovskite optoelectronic devices.
WOS关键词HALIDE DOUBLE PEROVSKITE ; QUANTUM DOTS ; OPTOELECTRONIC PROPERTIES ; ANION-EXCHANGE ; BR ; CL ; SUBSTITUTION ; LUMINESCENT ; CSPBX3
资助项目National Natural Science Foundation of China[21533010] ; National Natural Science Foundation of China[21833009] ; National Natural Science Foundation of China[21525315] ; National Key Research and Development Program of China[2017YFA0204800] ; Science Challenging Program[JCKY2016212A501] ; [DICP DMTO201601] ; [DICP ZZBS201703]
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000453488500025
出版者AMER CHEMICAL SOC
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Science Challenging Program ; Science Challenging Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Science Challenging Program ; Science Challenging Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Science Challenging Program ; Science Challenging Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Science Challenging Program ; Science Challenging Program
源URL[http://cas-ir.dicp.ac.cn/handle/321008/166348]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者Han, Keli
作者单位1.Shandong Univ, Inst Mol Sci & Engn, Qingdao 266237, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Chem Lasers, Dalian 116023, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Wuhan Univ, MOE, Key Lab Artificial Micro & Nanostruct, Sch Phys & Technol,Ctr Electron Microscopy, Wuhan 430072, Hubei, Peoples R China
6.Wuhan Univ, Inst Adv Studies, Wuhan 430072, Hubei, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Songqiu,Han, Keli,Yang, Bin,et al. Lead-Free Direct Band Gap Double-Perovskite Nanocrystals with Bright Dual-Color Emission[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2018,140(49):17001-17006.
APA Yang, Songqiu.,Han, Keli.,Yang, Bin.,Mao, Xin.,Hong, Fen.,...&Deng, Weiqiao.(2018).Lead-Free Direct Band Gap Double-Perovskite Nanocrystals with Bright Dual-Color Emission.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,140(49),17001-17006.
MLA Yang, Songqiu,et al."Lead-Free Direct Band Gap Double-Perovskite Nanocrystals with Bright Dual-Color Emission".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 140.49(2018):17001-17006.

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来源：大连化学物理研究所

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