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。
3
The testing result of photoluminescence spectra at room temperature shows that all the samples have two emission bands, that is, UV emission band near the band-edge and visible emission band.