科研之友
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摘要
A novel efficient blue-green-emitting phosphor, LiBaPO4: Eu2 , was prepared by solid-state reaction method. Its excitation band is extending from 250 to 450 nm, which is adaptable to the emission band of near-ultraviolet (NUV) LED chips (350-420 nm). Upon 348-nm light excitation, the phosphor exhibits a strong blue-green emission peaking at 480 nm. A bright blue-green LED was fabricated by incorporating the phosphor with an InGaN-based NUV chip. All the characteristics suggest that LiBaPO4:Eu2 is a good blue-green phosphor candidate for creating white light in phosphor-converted white LEDs.
