Abstract
Abstract Eu 3+ , Sm 3+ single-doped and co-doped LiY 6 O 5 (BO 3 ) 3 phosphors are prepared by a high-temperature solid-state reaction method. The Eu 3+ -doped and Sm 3+ -doped phosphors give bright red emission centered at 613 and 604 nm under 395- and 406-nm excitation, respectively, while the Eu 3+ , Sm 3+ co-doped phosphor just gives Eu 3+ -characterized emission whether excited by 395 or 406 nm. This indicates that the co-doped Sm 3+ ions can broaden the excitation band of the phosphor without changing its color index, which might match better with the near-ultraviolet (NUV) chips in white light-emitting diode (W-LED) application. The Sm 3+ -concentration-dependent luminescence properties ascribed to the energy transfer between Eu 3+ and Sm 3+ is discussed.
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