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    • 3. 发明申请
    • HALOPHOSPHATE PHOSPHOR AND WHITE LIGHT-EMITTING DEVICE
    • 卤磷酸盐和白色发光装置
    • US20120267999A1
    • 2012-10-25
    • US13411012
    • 2012-03-02
    • Hiroaki SakutaKazuhiko KagawaYoshihito SatoTakatoshi SetoNaoto Kijima
    • Hiroaki SakutaKazuhiko KagawaYoshihito SatoTakatoshi SetoNaoto Kijima
    • H01L33/50C09K11/86
    • C09K11/7739H01L33/502H01L2924/0002Y02B20/181H01L2924/00
    • The present invention provides a blue (blue-green) phosphor that has sufficient emission intensity in the wavelength region around 490 nm and that has high emission luminance at a temperature region reached during LED operation. The present invention also provides a white light-emitting device that uses a high-luminance green phosphor having an emission peak wavelength of 535 nm or greater and that has improved bright blue reproducibility.A phosphor having a chemical composition of general formula [1] has sufficient emission intensity in a wavelength region around 490 nm, and a white light-emitting device that uses such a phosphor has improved bright blue reproducibility. (Sr,Ca)aBabEux(PO4)cXd  [1] (In general formula [1], X is Cl; c, d and x are numbers satisfying 2.7≦c≦3.3, 0.9≦d≦1.1 and 0.3≦x≦1.2; and a and b satisfy the conditions a+b=5−x and 0.12≦b/(a+b)≦0.4.).
    • 本发明提供一种蓝色(蓝绿色)荧光体,其在490nm左右的波长范围内具有足够的发光强度,并且在LED操作期间达到的温度区域具有高的发光亮度。 本发明还提供一种使用发光峰值波长为535nm以上并具有提高的蓝色再现性的高亮度绿色荧光体的白色发光装置。 具有通式[1]的化学组成的荧光体在490nm左右的波长区域具有足够的发光强度,并且使用这种荧光体的白色发光器件具有改善的亮蓝色重现性。 (Sr,Ca)aBabEux(PO4)cXd [1](通式[1]中,X为Cl; c,d和x为满足2.7≦̸ c≦̸ 3.3,0.9≦̸ d≦̸ 1.1和0.3& x和nlE; 1.2; a和b满足条件a + b = 5-x和0.12≦̸ b /(a + b)≦̸ 0.4。