Application of Nitride and Oxynitride Compounds to Various Phosphors for White LED

Abstract:

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Multiternary nitride and oxynitride compounds doped with rare earth ions, such as Eu2+ and Ce3+ have been enthusiastically applied as various phosphors to white LED. New red and green phosphors, CaAlSiN3:Eu and Ba3Si6O12N2:Eu, have been successfully synthesized, recently. The red phosphor has intense emission around 650 nm under two different irradiations at 405 and 455 nm from blue- and near UV-LED chips, respectively; while strong emission is observed around 520 nm from the green phosphor. Both phosphors also show small thermal quenching over the temperatures up to 150 °C. In addition, both LaSi3N5:Ce and La3Si8O4N11:Ce in lanthanum silicon nitride and oxynitride were examined as candidates for a blue phosphor in white LED with near UV-LED chip.

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Periodical:

Edited by:

Katsutoshi Komeya, Yi-Bing Cheng, Junichi Tatami and Mamoru Mitomo

Pages:

15-18

DOI:

10.4028/www.scientific.net/KEM.403.15

Citation:

K. Uheda "Application of Nitride and Oxynitride Compounds to Various Phosphors for White LED", Key Engineering Materials, Vol. 403, pp. 15-18, 2009

Online since:

December 2008

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$35.00

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