Color-tunable photoluminescence of Cu-doped Zn-In-Se quantum dots and their electroluminescence properties

	Color-tunable photoluminescence of Cu-doped Zn-In-Se quantum dots and their electroluminescence properties
	Cao, S.; W. Y. Ji; J. L. Zhao; W. Y. Yang; C. M. Li and J. J. Zheng
	2016
发表期刊	Journal of Materials Chemistry C
卷号	4 期号:3
摘要	Recently, Cu-doped ternary chalcogenide quantum dots (QDs) have attracted extensive attention due to their large Stokes shift and tunable photoluminescence (PL) behavior in the visible and near-infrared (NIR) spectral range, and particularly for their remarkably lower toxicity than their Cd-based counterparts. However, there still remain material-and fabrication-related obstacles in realizing high-performance Cu-doped QDs, which limit their promising applications in light-emitting devices and bio-labeling. In the present study, we report the facile synthesis of high-qualified Cu-doped Zn-In-Se QDs via a hot injection approach, using a heterogeneous dispersion of Se in octadecene (ODE) as a "green" Se precursor. With variation of the ratios of Zn to In, the obtained Cu-doped Zn-In-Se QDs exhibited composition-tunable PL emissions over the most visible spectral window (ca. 565-710 nm) with a PL quantum yield (QY) up to 38% after coating ZnSe shells, which is the highest one ever reported in this system. Furthermore, we report, for the first time, the exploration of QD light-emitting diodes (QD-LEDs) based on the Cu-doped Zn-In-Se QDs as the active layer, which had a maximum luminance of 320 cd m(-2) and a luminous efficiency (LE) of 0.97 cd A(-1) (at 98 cd m(-2)), suggesting their promising potential for application in optoelectronic devices.
文章类型	期刊
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/56857
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Cao, S.,W. Y. Ji,J. L. Zhao,et al. Color-tunable photoluminescence of Cu-doped Zn-In-Se quantum dots and their electroluminescence properties[J]. Journal of Materials Chemistry C,2016,4(3).
APA	Cao, S.,W. Y. Ji,J. L. Zhao,W. Y. Yang,&C. M. Li and J. J. Zheng.(2016).Color-tunable photoluminescence of Cu-doped Zn-In-Se quantum dots and their electroluminescence properties.Journal of Materials Chemistry C,4(3).
MLA	Cao, S.,et al."Color-tunable photoluminescence of Cu-doped Zn-In-Se quantum dots and their electroluminescence properties".Journal of Materials Chemistry C 4.3(2016).

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