V-doped MgAl6O10: novel luminescence substrate for phosphor-free UV-white LEDs

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2012,（2）
• 页码范围: 65-67
• 页数: 3页
• 语种: 英文
• DOI: 10.3788/COL201210.021601

摘要

V-doped MgAl6O10 is grown by the conventional Czochralski method.The crystal structure and the cell parameters are analyzed through X-ray diffraction experiments.The absorption and emission spectra are investigated.Under pumping at 324 nm,the emission spectra of V-doped MgAl6O10 obtain two emission peaks at the wavelengths of 471 and 570 nm.Two emission bands of the spectra combine to produce a spectrum that is perceived as white by the naked eye.Therefore,V-doped MgAl6O10 single crystal can be applied as substrate for phosphor-free ultraviolet (UV)-white light-emitting diodes (LEDs).