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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
关键词Bismuth Lead-free Nanocrystals Perovskites Photoluminescence
刊名ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
2017-10-02
DOI10.1002/anie.201704739
59期:41页:12471-12475
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
关键词[WOS]CS3BI2BR9 SINGLE-CRYSTALS ; LIGHT-EMITTING-DIODES ; QUANTUM DOTS ; ROOM-TEMPERATURE ; OPTICAL-PROPERTIES ; ANION-EXCHANGE ; TRAP STATES ; CSPBX3 ; BR ; CL
英文摘要Lead-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.
语种英语
WOS记录号WOS:000411810600006
引用统计
被引频次:28[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/150156
专题中国科学院大连化学物理研究所
作者单位1.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
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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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