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Lead-Free, Air-Stable All-Inorganic Cesium Bismuth Halide Perovskite Nanocrystals
Yang, Bin1,2; Chen, Junsheng1,3,4; Hong, Feng1,2; Mao, Xin1,2; Zheng, Kaibo3,4; Yang, Songqiu1; Li, Yajuan1,2; Pullerits, Tonu3,4; Deng, Weiqiao1; Han, Keli1
KeywordBismuth Lead-free Nanocrystals Perovskites Photoluminescence
Source PublicationANGEWANDTE CHEMIE-INTERNATIONAL EDITION
2017-10-02
DOI10.1002/anie.201704739
Volume59Issue:41Pages:12471-12475
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordCS3BI2BR9 SINGLE-CRYSTALS ; LIGHT-EMITTING-DIODES ; QUANTUM DOTS ; ROOM-TEMPERATURE ; OPTICAL-PROPERTIES ; ANION-EXCHANGE ; TRAP STATES ; CSPBX3 ; BR ; CL
AbstractLead-based perovskite nanocrystals (NCs) have outstanding optical properties and cheap synthesis conferring them a tremendous potential in the field of optoelectronic devices. However, two critical problems are still unresolved and hindering their commercial applications: one is the fact of being lead-based and the other is the poor stability. Lead-free all-inorganic perovskite Cs3Bi2X9 (X = Cl, Br, I) NCs are synthesized with emission wavelength ranging from 400 to 560 nm synthesized by a facile room temperature reaction. The ligand-free Cs3Bi2Br9 NCs exhibit blue emission with photoluminescence quantum efficiency (PLQE) about 0.2%. The PLQE can be increased to 4.5% when extra surfactant (oleic acid) is added during the synthesis processes. This improvement stems from passivation of the fast trapping process (220 ps). Notably, the trap states can also be passivated under humid conditions, and the NCs exhibited high stability towards air exposure exceeding 30 days.
Language英语
WOS IDWOS:000411810600006
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/150056
Collection中国科学院大连化学物理研究所
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
Recommended Citation
GB/T 7714
Yang, Bin,Chen, Junsheng,Hong, Feng,et al. Lead-Free, Air-Stable All-Inorganic Cesium Bismuth Halide Perovskite Nanocrystals[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2017,59(41):12471-12475.
APA Yang, Bin.,Chen, Junsheng.,Hong, Feng.,Mao, Xin.,Zheng, Kaibo.,...&Han, Keli.(2017).Lead-Free, Air-Stable All-Inorganic Cesium Bismuth Halide Perovskite Nanocrystals.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,59(41),12471-12475.
MLA Yang, Bin,et al."Lead-Free, Air-Stable All-Inorganic Cesium Bismuth Halide Perovskite Nanocrystals".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 59.41(2017):12471-12475.
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