Abstract
An intense bluish-green phosphor, , is developed. The photoluminescence excitation and emission spectra, the lifetime, and the concentration effect are investigated. The results show that an efficient nonradiative energy transfer from to occurs and its efficiency is about 11%. Although the efficiency is not high enough, these results demonstrate that a ion with low absorption efficiency in the near-UV [(n)-UV] region can play the role of activator in a narrow green-emitting phosphor. This is potentially useful in (n)-UV () GaN-based LEDs through efficient energy feeding by allowing absorption of with high oscillator strength.
© 2010 Optical Society of America
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