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Lead-Free Silver-Bismuth Halide Double Perovskite Nanocrystals
Yang, Bin1,2; Chen, Junsheng1,3,4; Yang, Songqiu1; Hong, Feng1,2; Sun, Lei1; Han, Peigeng1,2; Pullerits, Tonu3,4; Deng, Weiqiao1,5; Han, Keli1,5
KeywordBismuth Charge Carriers Double Perovskites Nanocrystals Silver
Source PublicationANGEWANDTE CHEMIE-INTERNATIONAL EDITION
2018-05-04
ISSN1433-7851
DOI10.1002/anie.201800660
Volume57Issue:19Pages:5359-5363
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordLIGHT-EMITTING-DIODES ; QUANTUM DOTS ; DYNAMICAL PROPERTIES ; ANION-EXCHANGE ; EMISSION ; CSPBX3 ; BR ; ABSORPTION ; CL ; SEMICONDUCTORS
AbstractLead-free perovskite nanocrystals (NCs) were obtained mainly by substituting a Pb2+ cation with a divalent cation or substituting three Pb2+ cations with two trivalent cations. The substitution of two Pb2+ cations with one monovalent Ag+ and one trivalent Bi3+ cations was used to synthesize Cs2AgBiX6 (X=Cl, Br, I) double perovskite NCs. Using femtosecond transient absorption spectroscopy, the charge carrier relaxation mechanism was elucidated in the double perovskite NCs. The Cs2AgBiBr6 NCs exhibit ultrafast hot-carrier cooling (<1ps), which competes with the carrier trapping processes (mainly originate from the surface defects). Notably, the photoluminescence can be increased by 100 times with surfactant (oleic acid) added to passivate the defects in Cs2AgBiCl6 NCs. These results suggest that the double perovskite NCs could be potential materials for optoelectronic applications by better controlling the surface defects.
Language英语
WOS IDWOS:000431035500029
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/167221
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.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Lund Univ, Dept Chem Phys, POB 124, S-22100 Lund, Sweden
4.Lund Univ, NanoLund Chem Ctr, POB 124, S-22100 Lund, Sweden
5.Shandong Univ, Inst Mol Sci & Engn, Qingdao, Peoples R China
Recommended Citation
GB/T 7714
Yang, Bin,Chen, Junsheng,Yang, Songqiu,et al. Lead-Free Silver-Bismuth Halide Double Perovskite Nanocrystals[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2018,57(19):5359-5363.
APA Yang, Bin.,Chen, Junsheng.,Yang, Songqiu.,Hong, Feng.,Sun, Lei.,...&Han, Keli.(2018).Lead-Free Silver-Bismuth Halide Double Perovskite Nanocrystals.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,57(19),5359-5363.
MLA Yang, Bin,et al."Lead-Free Silver-Bismuth Halide Double Perovskite Nanocrystals".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 57.19(2018):5359-5363.
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