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A Reliable Method for Removing Fabry-Perot Effect in Material Characterization with Terahertz Time-Domain Spectroscopy 期刊论文  OAI收割
IEEE Transactions on Terahertz Science and Technology, 2020, 卷号: 10, 期号: 5, 页码: 443-452
作者:  
Liu DY(刘大有);  Lu TQ(卢天琪);  Qi F(祁峰)
  |  收藏  |  浏览/下载:33/0  |  提交时间:2020/07/04
Temperature-enhanced ultraviolet emission in ZnO thin film (EI CONFERENCE) 会议论文  OAI收割
Zhang Y. J.; Xu C. S.; Liu Y. C.; Liu Y. X.; Wang G. R.; Fan X. W.
收藏  |  浏览/下载:27/0  |  提交时间:2013/03/25
We have studied the structural and optical properties of ZnO thin films prepared by thermal oxidation of ZnS films deposited by plasma assisted electron-beam evaporation on Si(1 0 0) substrates. The transformation from zinc blende ZnS to hexagonal wurtzite ZnO is confirmed by Raman and X-ray diffraction (XRD) measurement. For the sample thermally oxidized at 600 C for 2 h  a novel UV emission peak Ix located at 3.22 eV (385 nm) has been observed. The temperature-dependent photoluminescence spectra show that the integrated intensity of Ix increases exponentially with increasing temperatures within the measuring temperature range  from 80 to 300 K  but the peak position remains nearly constant. We explain this behavior in terms of electron tunneling into the radiative recombination centers.