DICP OpenIR
Lead-Free Direct Band Gap Double-Perovskite Nanocrystals with Bright Dual-Color Emission
Yang, Bin1,3; Mao, Xin1,3; Hong, Fen1,3; Meng, Weiwei5,6; Tang, Yuxuan1,3; Xia, Xusheng2,3; Yang, Songqiu1; Deng, Weiqiao1,4; Han, Keli1,4
Corresponding AuthorHan, Keli(klhan@dicp.ac.cn)
Source PublicationJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
2018-12-12
ISSN0002-7863
DOI10.1021/jacs.8b07424
Volume140Issue:49Pages:17001-17006
Funding ProjectNational 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]
Funding OrganizationNational 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
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordHALIDE DOUBLE PEROVSKITE ; QUANTUM DOTS ; OPTOELECTRONIC PROPERTIES ; ANION-EXCHANGE ; BR ; CL ; SUBSTITUTION ; LUMINESCENT ; CSPBX3
AbstractLead-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.
Language英语
Funding OrganizationNational 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
WOS IDWOS:000453488500025
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:55[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/166349
Collection中国科学院大连化学物理研究所
Corresponding AuthorHan, Keli
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Chem Lasers, Dalian 116023, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Shandong Univ, Inst Mol Sci & Engn, Qingdao 266237, 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
Recommended Citation
GB/T 7714
Yang, Bin,Mao, Xin,Hong, Fen,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, Bin.,Mao, Xin.,Hong, Fen.,Meng, Weiwei.,Tang, Yuxuan.,...&Han, Keli.(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, Bin,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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