Aluminum-Doped Cesium Lead Bromide Perovskite Nanocrystals with Stable Blue Photoluminescence Used for Display Backlight

	Aluminum-Doped Cesium Lead Bromide Perovskite Nanocrystals with Stable Blue Photoluminescence Used for Display Backlight
	Ming Liu; Guo-Hua Zhong; Yongming Yin; Jingsheng Miao; Ke Li; Chengqun Wang; Xiuru Xu; Clifton Shen; Hong Meng
刊名	Advanced Science
	2017
文献子类	期刊论文
英文摘要	Bright and stable blue emitters with narrow full-width at half-maxima are particularly desirable for applications in television displays and related technologies. Here, this study shows that doping aluminum (Al3+) ion into CsPbBr3 nanocrystals (NCs) using AlBr3 can afford lead-halide perovskites NCs with stable blue photoluminescence. First, theoretical and experimental analyses reveal that the extended band gap and quantum confinement effect of elongated shape give rise to the desirable blueshifted emission. Second, the aluminum ion incorporation path is rationalized qualitatively by invoking fundamental considerations about binding relations in AlBr3 and its dimer. Finally, the absence of anion-exchange effect is corroborated when green CsPbBr3 and blue Al:CsPbBr3 NCs are mixed. Combinations of the above two NCs with red-emitting CdSe@ZnS NCs result in UV-pumped white lightemitting diodes (LED) with an National Television System Committee (NTSC) value of 116% and ITU-R Recommendation B.T. 2020 (Rec. 2020) of 87%. The color coordinates of the white LED are optimized at (0.32, 0.34) in CIE 1931. The results suggest that low-cost, earth-abundant, solution-processable Aldoped perovskite NCs can be promising candidate materials for blue downconversion layer in backlit displays.
URL标识	查看原文
语种	英语
WOS记录号	WOS:000416155900019
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/11613]
专题	深圳先进技术研究院_集成所
作者单位	Advanced Science
推荐引用方式 GB/T 7714	Ming Liu,Guo-Hua Zhong,Yongming Yin,et al. Aluminum-Doped Cesium Lead Bromide Perovskite Nanocrystals with Stable Blue Photoluminescence Used for Display Backlight[J]. Advanced Science,2017.
APA	Ming Liu.,Guo-Hua Zhong.,Yongming Yin.,Jingsheng Miao.,Ke Li.,...&Hong Meng.(2017).Aluminum-Doped Cesium Lead Bromide Perovskite Nanocrystals with Stable Blue Photoluminescence Used for Display Backlight.Advanced Science.
MLA	Ming Liu,et al."Aluminum-Doped Cesium Lead Bromide Perovskite Nanocrystals with Stable Blue Photoluminescence Used for Display Backlight".Advanced Science (2017).