Synthesis and photoluminescent properties of ZnO:Cu/ZnO core/shell nanocrystals

被引：2

作者：

Li M.-h. ^{[1
,2
]}

Chen X.-m. ^{[1
]}

Xu J.-p. ^{[2
,3
]}

Zhang X.-s. ^{[2
]}

Wu Y.-y. ^{[1
,2
]}

Li P. ^{[2
]}

Niu X.-p. ^{[2
]}

Luo C.-y. ^{[2
]}

Li L. ^{[2
]}

机构：

[1] Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Electronics Information Engineering, Tianjin University of Technology

[2] Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Institute of Material Physics, Tianjin University of Technology

[3] Laboratory of Solid State Microstructures, Nanjing University

来源：

Optoelectronics Letters | 2012年 / 8卷 / 4期

基金：

中国国家自然科学基金;

关键词：

Green Emission; Zinc Acetate Dihydrate; Yellow Emission; Acetate Tetrahydrate; Dilute Precursor Solution;

D O I：

10.1007/s11801-012-2023-1

中图分类号：

学科分类号：

摘要：

ZnO:Cu/ZnO core/shell nanocrystals are synthesized by a two-step solution-phase process. The morphology, structure and optical properties of the samples are detected by scanning electron microscopy, Raman, absorption and luminescence spectroscopy. The increase of particle size confirms the growth of ZnO shell. The segregation of CuO phase observed in ZnO: Cu core is not detected in ZnO:Cu/ZnO core/shell nanocrystals from Raman spectra. It is suggested that some Cu ions can be segregated from ZnO nanocrystals, and the separated Cu ions can be incorporated inside ZnO shell after the growth of ZnO shell. The visible emission mechanism is discussed in detail, and the photoluminescence analysis indicates that the core/shell structure helps to eliminate the surface-related emission. © 2012 Tianjin University of Technology and Springer-Verlag Berlin Heidelberg.

引用

页码：241 / 244

页数：3

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