The optical absorption edges red-shift along with the increase of annealing temperature under nitrogen and blue-shift under air were observed, which can be attributed to the quantum size effect.
在氮气和空气中退火时，随退火温度升高前者表现为红移而后者表现为蓝移，这归属于量子尺寸效应。
2
The results indicate that the blue shift of band gap depends on the annealing temperature and annealing time. Choosing reasonable annealing condition can control the magnitude of blue shift.
实验结果表明，带隙蓝移同退火时间和退火温度有关，合理选用退火条件可以控制带隙的蓝移量。
3
Also, the blue shift depends on ion dose, energy as well as the annealing condition.