Silica coating enhances the stability of inorganic perovskite nanocrystals for efficient and stable down-conversion in white light-emitting devices

doi:10.1039/c8nr07022a

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	Silica coating enhances the stability of inorganic perovskite nanocrystals for efficient and stable down-conversion in white light-emitting devices
	Zhang, F.; Shi, Z. F.; Ma, Z. Z.; Li, Y.; Li, S.; Wu, D.; Xu, T. T.; Li, X. J.; Shan, C. X.; Du, G. T.
刊名	Nanoscale
	2018
卷号	10 期号:43 页码:20131-20139
关键词	highly luminescent diodes phosphors cspbx3 matrix br cl Chemistry Science & Technology - Other Topics Materials Science Physics
ISSN号	2040-3364
DOI	10.1039/c8nr07022a
英文摘要	Recently, inorganic halide perovskite (CsPbX3, X = Cl, Br, I) quantum dots (QDs) have attracted tremendous research interests because of their great potential for application in the fields of low-cost light sources and displays. However, the unsatisfactory structural and chemical stabilities of such materials are the main obstacles hindering reliable device operation significantly. In this study, we successfully prepared CsPbBr3/silica QD composites through a simple sol-gel reaction by using tetramethoxysilane as a single molecule precursor. The as-prepared CsPbBr3/silica QD composites demonstrated substantially improved stability against heat, light, and environmental oxygen/moisture. Besides, a relatively narrower photoluminescence linewidth and higher quantum yield were achieved compared with that of fresh CsPbBr3 QDs. Furthermore, the CsPbBr3 QDs/silica composites were applied as color-converting layer curing on blue light-emitting diodes (LEDs) for white LED applications. Finally, a high power efficiency of 63.5 lm W-1 was obtained and the light emission could be efficiently sustained over 13 h without any decay in the continuous current mode, demonstrating remarkable operation stability than that reported previously. It can be anticipated that the excellent properties and facile processing technique used here will make perovskite QDs/silica composites attractive for applications in optoelectronics and industrial fields.
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/61150]
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	Zhang, F.,Shi, Z. F.,Ma, Z. Z.,et al. Silica coating enhances the stability of inorganic perovskite nanocrystals for efficient and stable down-conversion in white light-emitting devices[J]. Nanoscale,2018,10(43):20131-20139.
APA	Zhang, F..,Shi, Z. F..,Ma, Z. Z..,Li, Y..,Li, S..,...&Du, G. T..(2018).Silica coating enhances the stability of inorganic perovskite nanocrystals for efficient and stable down-conversion in white light-emitting devices.Nanoscale,10(43),20131-20139.
MLA	Zhang, F.,et al."Silica coating enhances the stability of inorganic perovskite nanocrystals for efficient and stable down-conversion in white light-emitting devices".Nanoscale 10.43(2018):20131-20139.