Formation and photoluminescence properties of colloidal ZnCuIn(SexS1-x)(2)/ZnS nanocrystals with gradient composition

doi:10.1007/s10853-018-2948-2

GIEC OpenIR

	Formation and photoluminescence properties of colloidal ZnCuIn(SexS1-x)(2)/ZnS nanocrystals with gradient composition
	Wang, Kelai 1,2; Liang, Zheng 1,3; Li, Jingling 1,3; Xu, Xueqing1,3 ; Cheng, Xiaoling 2; Jin, Hu 1,3; Xu, Dehua 1; Xu, Gang1,3
	2019-02-01
发表期刊	JOURNAL OF MATERIALS SCIENCE
ISSN	0022-2461
卷号	54 期号:3 页码:2037-2048
通讯作者	Xu, Xueqing(xuxq@ms.giec.ac.cn) ; Cheng, Xiaoling(ggcxl@163.com)
摘要	Photoluminescent CuIn(SexS1 -x) 2 (CISeS) nanocrystals (NCs) have been synthesized utilizing copper iodide (CuI) and indium acetate (In(Ac) 3) as metal cation precursors, Se powder and n-dodecanethiol (DDT) as selenide and sulfur source, combined with oleylamine and n-dodecanethiol as coordinate ligands at a moderate reaction temperature of 200 h C. The obtained CISeS NCs consisted of a gradient composition that the content of selenide increased from the nuclei to the surface. With the growth of NCs, they exhibited a tunable photoluminescent emission ranging from 722 to 830 nm which was size-and composition-dependent. The photoluminescent quantum yield of the NCs could be further enhanced from 1.2 to 40.7% after ZnS coating due to the formation of ZnCuIn(SexS1 -x) 2/ZnS (ZnCISeS/ZnS) core-shell structures with the alloyed core. The photoluminescence emission mechanisms of CISeS NCs indicated that the gradient composition structure of CISeS led to a gradient energy level of its conduction band (CB)/valence band (VB), resulting in the charge transfer from the nuclei to the surface through the quantized CB/VB. This transfer process has quenched fluorescence emission arising from the quantized CB/VB and defect states located in the nuclei, such as irradiation relaxation between quantized CB and V0 Cu. This mechanism could illuminate why the indium-rich CISeS NCs did not exhibit better photoluminescence properties.
DOI	10.1007/s10853-018-2948-2
关键词[WOS]	CORE/SHELL QUANTUM DOTS ; LIGHT-EMITTING-DIODES ; SOLAR-CELLS ; CUINS2 NANOCRYSTALS ; HIGHLY LUMINESCENT ; OPTICAL-PROPERTIES ; THIN-FILMS ; TERNARY ; PERFORMANCE ; INKS
收录类别	SCI
语种	英语
资助项目	Key Project on Synergy Collaborative Innovation of Guangzhou City[201704030069] ; National Natural Science Foundation of China[21273241] ; Natural Science Foundation of Guangdong Province[2015A030310501]
WOS研究方向	Materials Science
项目资助者	Key Project on Synergy Collaborative Innovation of Guangzhou City ; National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000450016100010
出版者	SPRINGER
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/24248
专题	中国科学院广州能源研究所
通讯作者	Xu, Xueqing; Cheng, Xiaoling
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangdong Prov Key Lab New & Renewable Energy Res, CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 2.Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Wang, Kelai,Liang, Zheng,Li, Jingling,et al. Formation and photoluminescence properties of colloidal ZnCuIn(SexS1-x)(2)/ZnS nanocrystals with gradient composition[J]. JOURNAL OF MATERIALS SCIENCE,2019,54(3):2037-2048.
APA	Wang, Kelai.,Liang, Zheng.,Li, Jingling.,Xu, Xueqing.,Cheng, Xiaoling.,...&Xu, Gang.(2019).Formation and photoluminescence properties of colloidal ZnCuIn(SexS1-x)(2)/ZnS nanocrystals with gradient composition.JOURNAL OF MATERIALS SCIENCE,54(3),2037-2048.
MLA	Wang, Kelai,et al."Formation and photoluminescence properties of colloidal ZnCuIn(SexS1-x)(2)/ZnS nanocrystals with gradient composition".JOURNAL OF MATERIALS SCIENCE 54.3(2019):2037-2048.