Influence of annealing treatment on the luminescent properties of Ta:β-Ga2O3 single crystal
Yu Xiaowei1, Cui Huiayuan2, Zhu Maodong2, Xia Zhilin1, †, Sai Qinglin2, ‡
       

Plot of ( α hv ) 2 versus hv for 0.01 mol% Ta:β-Ga2O3 before and after annealing.