Optical characteristics of Ce,Eu:YAG single crystal grown by Czochralski method

Abstract

Abstract Eu-doped Ce:YAG single crystal (SC) was fabricated by the Czochralski method. The crystal structure, optical and photoelectric property of the constructed w-LED was investigated. The XRD and HRTEM results show that YAG crystal structure has little change when Eu3+, Ce3+ are doped. Absorption spectra and photoluminescence spectra show that the Ce,Eu:YAG single crystal can effectively absorb the 460\xa0nm blue light to form a broadband emission center at 530\xa0nm, decay curves of the crystal show that the energy transfer between Ce3+ and Eu3+ is highly suppressed. Compared with commercial Ce:YAG phosphor, Ce,Eu:YAG exhibits better thermal stability.