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To meet the requirements of warm white light-emitting diodes (WLEDs) with extreme thermal stability, high color rendering index and low color temperature, which is equivalent to natural sunlight, we need to develop novel phosphor materials that can efficiently absorb excitation energy from near-ultraviolet (NUV) LEDs and produce desired visible emissions. The Sr2+ and Eu2+ ions co-activated Ba2SiO...
A thiogallate chalcogenide phosphor CaLaGa 3 S 7 :Eu 2+ was synthesized by a solid-state reaction at 950°C in a H 2 S atmosphere. The photoluminescence excitation,emission spectra, concentration quenching, fluorescence lifetime, and thermal quenching process of the phosphor were investigated in detail. It was found that the synthesized phosphor emitted intense and broadband...
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