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1. Non-rare earth white emission phosphor: Ti-doped MgAl2O4

Author

J., H. Lim, B., N. Kim, Y., Kim, S., Kang, R., J. Xie, I., S. Chong, K., Morita, H., Yoshida, K., Hiraga, J., H. Lim, B., N. Kim, Y., Kim, S., Kang, R., J. Xie, I., S. Chong, K., Morita, H., Yoshida, and K., Hiraga

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 Mg 2+ and O2− vacancies in the spinel powder.

Published
2013

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