Hydrothermal Synthesis of Ce-Doped CdSe/ZnS Nanostructure for Highly Efficient Green and Red Emitting

摘要

Using selenium dioxide as the source of selenium, CdSe, CdSe/ZnS and Ce doped CdSe/ZnS nanocrystals were synthesized. The X-ray diffraction analysis confirmed that the synthesized CdSe and CdSe/ZnS materials were both hexagonal phase. SEM techniques were employed for the study of the morphology of hexagonal CdSe and CdSe/ZnS samples. Our study focused on the optical properties of the Ce-doped CdSe/ZnS material. The PL spectra of the Ce-doped CdSe/ZnS material had two emission peaks at 511 nm in the green region and 700 nm in the red region, respectively. Our Ce-doped CdSe/ZnS nanocrystals could be combined with blue InGaN/GaN chip to fabricate white LED.