紫外吸收峰变窄，强度增加，吸收边变得陡峭并向长波方向移动，光学带隙降低。

The ultraviolet absorption peak narrows, absorption intensity increases, the absorption margin becomes steep and moves to longer wavelength, the optical band gap decreases as well.

youdao

紫外吸收峰变窄，强度增加，吸收边变得陡峭并向长波方向移动，光学带隙降低。

The ultraviolet absorption peak narrows, absorption intensity increases, the absorption margin becomes steep and moves to longer wavelength, the optical band gap decreases as well.

youdao