It also showed that the opticalabsorptionedge of the annealed film appeared shifted towards the longer wavelength side and the band gap decreased by 0.
光学性质显示退火处理的薄膜吸收边缘明显的向长波的方向移动，发生红移现象，而且禁带宽度减少了0。
2
Compared with crystal silicon, porous silicon has a stronger opticalabsorption and blue shift has taken place at its absorption edge.
同单晶硅相比，其吸收边发生了蓝移，并且吸收强烈。
3
The optical transmittance of al doped AZO is as high as 85% in the visible region, the UV absorptionedge is blue shifted greatly with increasing al doping concentration.