Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11006530 | Journal of Luminescence | 2018 | 9 Pages |
Abstract
By depositing ZnS:Mn films using PLD technique to coat ZnO nanorods which were grown on GaN substrate using hydrothermal method, high quality ZnS:Mn/ZnO/GaN core-shell nanorods array was prepared. The PL spectrum of ZnS:Mn/ZnO/GaN core-shell array ranges from blue-violet light to red light (400-700â¯nm). It consists of four luminous bands: UV light at 375â¯nm originating from the free exciton emission of ZnO, a blue light emission at 450â¯nm from GaN, an orange light emission at 590â¯nm mainly from ZnO nanorods and Mn2+ in ZnS, and a green light emission at about 530â¯nm related to ZnS:Mn/ZnO interface. The mechanism of green light emission is analyzed in detail. The color coordinate of ZnS:Mn/ZnO/GaN core-shell array is (0.3347, 0.318), and the color temperature is 5375â¯K, much closer to the standard white light when compared with other systems.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Cai-Feng Wang, Ni Liu, Bo Hu,