Electrically-Driven Violet Light-Emitting Devices Based on Highly Stable Lead-Free Perovskite Cs3Sb2Br9 Quantum Dots

doi:10.1021/acsenergylett.9b02096

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	Electrically-Driven Violet Light-Emitting Devices Based on Highly Stable Lead-Free Perovskite Cs3Sb2Br9 Quantum Dots
	Z. Z. Ma,Z. F. Shi,D. W. Yang,F. Zhang,S. Li,L. T. Wang,D. Wu,Y. T. Zhang,G. R. Na,L. J. Zhang,X. J. Li,Y. Zhang and C. X. Shan
刊名	Acs Energy Letters
	2020
卷号	5 期号:2 页码:385-394
ISSN号	2380-8195
DOI	10.1021/acsenergylett.9b02096
英文摘要	Recently, substantial progress has been made in perovskite-based light-emitting devices (LEDs) with near-infrared, red, green, and blue emissions. However, short-wavelength perovskite LEDs targeted at violet emission remain a great challenge. Moreover, the majority of previously reported devices were focused on the conventional lead halide perovskites. In this study, for the first time, electrically driven violet emission (408 nm) from lead-free Cs3Sb2Br9 quantum dots (QDs) was demonstrated at room temperature, the shortest wavelength for perovskite LEDs as far as we know, and an external quantum efficiency of similar to 0.206% was achieved. The device demonstrated an excellent working stability. After a long-term running for 6 h, almost 90% of the initial electroluminescence performance was retained, and no current density rising occurred with the running time. The results obtained suggest that the lead-free Cs3Sb2Br9 QDs are potentially attractive candidates for the preparation of environment-friendly and stable violet LEDs, making practical applications of them a real possibility.
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语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/64486]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Z. Z. Ma,Z. F. Shi,D. W. Yang,F. Zhang,S. Li,L. T. Wang,D. Wu,Y. T. Zhang,G. R. Na,L. J. Zhang,X. J. Li,Y. Zhang and C. X. Shan. Electrically-Driven Violet Light-Emitting Devices Based on Highly Stable Lead-Free Perovskite Cs3Sb2Br9 Quantum Dots[J]. Acs Energy Letters,2020,5(2):385-394.
APA	Z. Z. Ma,Z. F. Shi,D. W. Yang,F. Zhang,S. Li,L. T. Wang,D. Wu,Y. T. Zhang,G. R. Na,L. J. Zhang,X. J. Li,Y. Zhang and C. X. Shan.(2020).Electrically-Driven Violet Light-Emitting Devices Based on Highly Stable Lead-Free Perovskite Cs3Sb2Br9 Quantum Dots.Acs Energy Letters,5(2),385-394.
MLA	Z. Z. Ma,Z. F. Shi,D. W. Yang,F. Zhang,S. Li,L. T. Wang,D. Wu,Y. T. Zhang,G. R. Na,L. J. Zhang,X. J. Li,Y. Zhang and C. X. Shan."Electrically-Driven Violet Light-Emitting Devices Based on Highly Stable Lead-Free Perovskite Cs3Sb2Br9 Quantum Dots".Acs Energy Letters 5.2(2020):385-394.