Effect of K-doping on structural and optical properties of ZnO thin films |
| |
Authors: | Linhua Xu Xiangyin LiJun Yuan |
| |
Institution: | Department of Applied Physics, Nanjing University of Science and Technology, Nanjing, 210094, China |
| |
Abstract: | In this work, K-doped ZnO thin films were prepared by a sol–gel method on Si(111) and glass substrates. The effect of different K-doping concentrations on structural and optical properties of the ZnO thin films was studied. The results showed that the 1 at.% K-doped ZnO thin film had the best crystallization quality and the strongest ultraviolet emission ability. When the concentration of K was above 1 at.%, the crystallization quality and ultraviolet emission ability dropped. For the K-doped ZnO thin films, there was not only ultraviolet emission, but also a blue emission signal in their photoluminescent spectra. The blue emission might be connected with K impurity or/and the intrinsic defects (Zn interstitial and Zn vacancy) of the ZnO thin films. |
| |
Keywords: | ZnO thin films Sol&ndash gel method Microstructure Optical properties |
本文献已被 ScienceDirect 等数据库收录! |
|