Blue shift appears both on the absorb edges in the absorption spectra and on the band-edge emission in the luminescence spectrum.
在紫外吸收谱中表现为吸收边明显蓝移，而在光致发光谱中，表现为带边发射的蓝移。
2
It also showed that the optical absorptionedge of the annealed film appeared shifted towards the longer wavelength side and the band gap decreased by 0.