通量
材料科学
脉冲激光沉积
激光器
光电子学
纹理(宇宙学)
光学
薄膜
溅射
蓝宝石
纳米技术
物理
计算机科学
人工智能
图像(数学)
作者
Chen Wang,Yuchao Zhang,W.L. Fan,Wan-Yu Wu,Dong‐Sing Wuu,Shui‐Yang Lien,Wen‐Zhang Zhu
出处
期刊:Vacuum
[Elsevier]
日期:2022-11-01
卷期号:205: 111469-111469
被引量:3
标识
DOI:10.1016/j.vacuum.2022.111469
摘要
This work explored the crystal structural, optical bandgap, and morphological texture evolution of pulsed laser deposited In-doped Ga2O3 films grown on sapphire substrate at different laser fluence from 1.0 to 2.6 J/cm2. The in situ optical emission spectroscopy was carried out to monitor the plasma radicals generated during the deposition. All the deposited films were crystallized and some clusters were formed because of high deposition temperature and rapid surface diffusion of indium (In). The growth rate and the crystallinity of the film increased and then declined with increasing laser fluence. The texture evolution mechanism of the films has been proposed firstly. The rapid diffusion of In, the sputtering and reflection effect of plasma species exist in whole films’ deposition process, which has a significant impact on the texture characteristics of the films. The clusters emerging on film surface were the crystallized In-rich InGaOx nanoparticles consisting of β-Ga2O3 and cubic In2O3 phases. Metal-semiconductor-metal solar-blind photodetectors were also fabricated and analyzed to illustrate the effect of laser fluence. The elaboration of texture evolution mechanism and effect of laser fluence on the properties of the In-doped Ga2O3 films and photodetectors is very beneficial for its application in high performance photoelectric devices.
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