Lead-Free, Air-Stable All-Inorganic Cesium Bismuth Halide Perovskite Nanocrystals

	Lead-Free, Air-Stable All-Inorganic Cesium Bismuth Halide Perovskite Nanocrystals
	Yang, Bin 3,4; Chen, Junsheng 1,2,3; Hong, Feng 3,4; Mao, Xin 3,4; Zheng, Kaibo 1,2; Yang, Songqiu 3; Li, Yajuan 3,4; Pullerits, Tonu 1,2; Deng, Weiqiao 3; Han, Keli 3
刊名	ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
	2017-10-02
卷号	59 期号:41 页码:12471-12475
关键词	bismuth lead-free nanocrystals perovskites photoluminescence
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.
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
收录类别	SCI
语种	英语
WOS记录号	WOS:000411810600006
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/150056]
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
作者单位	1.Lund Univ, Dept Chem Phys, POB 124, S-22100 Lund, Sweden 2.Lund Univ, NanoLund Chem Ctr, POB 124, S-22100 Lund, Sweden 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 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.