Abstract
White emission produced by Ti-doped MgAl2O4 phosphor powder is reported, which is in contrast to blue emission from most Ti-doped single crystals of MgAl2O4. The white emission peak consists of four deconvoluted peaks: 440, 490, 550, and 620 nm, when was excited by 260 nm wavelength. Ti4+ in octahedral sites was found to contribute mostly to greenish blue emissions at 490 and 550 nm. The red emission at 620 nm was produced by abundant Mg2+ and O2- vacancies in the spinel powder.
Original language | English |
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Article number | 031104 |
Journal | Applied Physics Letters |
Volume | 102 |
Issue number | 3 |
DOIs | |
State | Published - 21 Jan 2013 |