Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Formation and photoluminescence properties of colloidal ZnCuIn(SexS1-x)(2)/ZnS nanocrystals with gradient composition | |
Wang, Kelai1,2; Liang, Zheng1,3; Li, Jingling1,3; Xu, Xueqing1,3 ; Cheng, Xiaoling2; Jin, Hu1,3; Xu, Dehua1; Xu, Gang1,3
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| 2019-02-01 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE
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| ISSN | 0022-2461 |
| Volume | 54Issue:3Pages:2037-2048 |
| Corresponding Author | Xu, Xueqing(xuxq@ms.giec.ac.cn) ; Cheng, Xiaoling(ggcxl@163.com) |
| Abstract | 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 |
| WOS Keyword | CORE/SHELL QUANTUM DOTS ; LIGHT-EMITTING-DIODES ; SOLAR-CELLS ; CUINS2 NANOCRYSTALS ; HIGHLY LUMINESCENT ; OPTICAL-PROPERTIES ; THIN-FILMS ; TERNARY ; PERFORMANCE ; INKS |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Materials Science |
| Funding Organization | Key Project on Synergy Collaborative Innovation of Guangzhou City ; National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province |
| WOS Subject | Materials Science, Multidisciplinary |
| WOS ID | WOS:000450016100010 |
| Publisher | SPRINGER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/24248 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Xu, Xueqing; Cheng, Xiaoling |
| Affiliation | 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 |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation 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. |
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