1. Formation and optical properties of ZnSe and ZnS nanocrystals in glasses.
- Author
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Xia, Mengling, Liu, Chao, Zhao, Zhiyong, Ai, Bing, Yin, Qiaoyun, Xie, Jun, Han, Jianjun, and Zhao, Xiujian
- Subjects
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OPTICAL properties , *ZINC selenide , *ZINC compounds , *GLASS , *NANOPARTICLES - Abstract
ZnSe and ZnS nanocrystals (NCs) were precipitated in glasses through heat-treatment. High resolution transmission electron microscope image confirmed that ZnSe NCs were formed in the silicate glasses, and the X-ray diffraction patterns confirmed that ZnS NCs were precipitated in the borosilicate glasses. Absorption shoulders of the ZnSe NCs and ZnS NCs appeared at ~ 2.76 eV and ~ 3.78 eV, corresponding to the bandgap energies of bulk ZnSe and ZnS crystals, respectively. Instead of the intrinsic emissions, broad-band visible photoluminescence from the surface defects or color centers in the glasses was observed from these ZnSe or ZnS NCs. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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