Photoinduced Formation of CdSSe Nanocrystals in Glass

The optical transmission and luminescence spectra of CdSSe-doped glass before heat treatment were measured. This glass does not contain CdSSe nanocrystals. The optical transmittance decreases and luminescence intensity increases upon laser irradiation. These results indicate that the CdSSe nanocrystals are formed by laser irradiation. When the wavelength of laser light is changed, a notable change in the absorption edge of induced absorption is not observed. Transient characteristics of luminescence from the CdSSe-doped glass are compared with those from the CdSSe-doped glass after heat treatment.