Investigation of the optical properties of poly-vinyl pyrrolidone (PVP) capped ZnO quantum dots

被引：0
作者：
Yang, CL [1 ]
Wang, JN [1 ]
Guo, L [1 ]
Yang, SH [1 ]
Ge, WK [1 ]
机构：
[1] Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China
来源：
PROCEEDINGS OF THE 25TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS, PTS I AND II | 2001年 / 87卷
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中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Optical Properties of ZnO quantum dots (QDs) capping with PVP molecules have been investigated. It is shown that surface modification by PVP can dramatically change ZnO QDs properties such as their sizes and emission spectra. At optimized Zn(II)/PVP ratio, strong UV emission from QDs was obtained by fully eliminating the emission from the surface states. Detailed study shows that the UV emission originates from near band edge bound state emission rather than from band-to-band or free exciton recombination.
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页码：1317 / 1318
页数：2
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