| 简介 |
PROBLEM TO BE SOLVED : To provide a UV-excited red light-emitting material capable of emitting red light stably and with high efficiency even by passing a high-current and emitting light of high brightness; and to provide a light-emitting device capable of red light-emitting or white light-emitting with high efficiency and high brightness for a long period.
SOLUTION : A UV-excited red light-emitting material comprises a fluoride single crystal expressed by chemical formula : M1-xRExF2+x-w, wherein M is one or more group 2 metal element(s) selected from the group of Be, Mg, Ca, Sr and Ba; RE is a rare-earth element; and 0
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