|
|||||
|
|
Synthesis and photoluminescent properties of ZnO:Cu/ZnO core/shell nanocrystals |
|
| Authors: | Li Mei-hui Chen Xi-ming Xu Jian-ping Zhang Xiao-song Wu Yan-yu Li Ping Niu Xi-ping Luo Cheng-yuan and Li Lan |
| Affiliation: | 1. Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Electronics Information Engineering, Tianjin University of Technology, Tianjin, 300384, China 2. Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Institute of Material Physics, Tianjin University of Technology, Tianjin, 300384, China 3. Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093, China |
| Abstract: | 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. |
| Keywords: | |
| 本文献已被 CNKI SpringerLink 等数据库收录！ | |
| 点击此处可从《光电子快报》浏览原始摘要信息 | |
| 点击此处可从《光电子快报》下载全文 | |