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    • 6. 发明授权
    • Method for preparing small particle size fluoride up-converting phosphors
    • 制备小粒径氟化物上转换磷光体的方法
    • US5891361A
    • 1999-04-06
    • US850740
    • 1997-05-02
    • James Kane
    • James Kane
    • C09K11/77C09K11/85
    • C09K11/7772
    • Spherical particles of fluoride up-converter phosphors having a particle size of 1 micron and less can be made from their corresponding precursor hydroxycarbonate particles by heating the hydroxycarbonate particles in an oxygen-containing atmosphere to convert the hydroxycarbonate to the corresponding oxide but without changing the size and shape of the particles, and then heating the phosphor oxide particles to their corresponding fluoride particles by heating in SF.sub.6, at a temperature that will crack the SF.sub.6 but will not change the size or shape of the phosphor particles.
    • 可以通过在含氧气氛中加热羟基碳酸酯颗粒将羟基碳酸酯颗粒转化成相应的氧化物而不改变尺寸,从而可以通过其相应的前体羟基碳酸酯颗粒来制备粒径为1微米以下的氟化物上转换荧光体的球形颗粒 和颗粒形状,然后在SF6中加热,在将会破裂SF6的温度下将磷光体氧化物颗粒加热至相应的氟化物颗粒,但不会改变荧光体颗粒的尺寸或形状。