Influence of annealing treatment on the luminescent properties of Ta:
β
-Ga
2
O
3
single crystal
Yu Xiaowei
1
, Cui Huiayuan
2
, Zhu Maodong
2
, Xia Zhilin
1, †
, Sai Qinglin
2, ‡
Plot of
(
α
hv
)
2
versus
hv
for 0.01 mol% Ta:
β
-Ga
2
O
3
before and after annealing.