Abstract
Photochromic (PC) ZnO nanoparticles are synthesized for the first time by using a VHF plasma enhanced CVD apparatus. The prepared ZnO film changes from transparent to PC state under UV irradiation; on being subjected to heat treatment, it changes back to transparent state. There is a threshold temperature for attaining the PC phase. The Debye-Waller factor of Zn atoms is specifically large for the PC ZnO. The ZnO nanoparticles contain carbon as impurity. The effects of C-O bonds on the ZnO crystal structure and density of states (DOS) are simulated based on density-functional theory. The results reveal that the crystal structure is slightly distorted and a sufficient DOS for PC light absorption is formed in the band gap.
Original language | English |
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Pages (from-to) | 1573-1577 |
Number of pages | 5 |
Journal | MRS Advances |
Volume | 4 |
Issue number | 27 |
DOIs | |
Publication status | Published - 2019 |
All Science Journal Classification (ASJC) codes
- Mechanical Engineering
- Mechanics of Materials
- Materials Science(all)
- Condensed Matter Physics