以Bi2O3-B2O3-ZnO为基质玻璃的原料组分, 制备工艺采用传统的熔融冷却法, 溶制温度950 ℃制备出基质玻璃。再通过低温共烧结法在基质玻璃中成功掺入Lu2.94-xYXAl5O12:0.06Ce(X=0~0.8)绿色荧光粉制备出绿色荧光玻璃。利用stc-4000快速光谱仪和PMS-80可见光谱分析系统研究了不同电流下的LED器件光效、色温、色坐标的变化情况。结果表明, 随着驱动电流从10 mA逐渐升高到30 mA, LED器件的测试光效大约下降16%, 相关色温变化较小, 色坐标未发生漂移。由于缺少红光成分, 实验在绿色荧光玻璃上通过旋转涂覆一层红色荧光薄膜制备出高显色指数的暖白光LED, 进一步推动绿色荧光玻璃在白光LED中的应用。

The bismuthate glass is prepared by conventional melting-quenching method at 950 ℃, which is composed of Bi2O3, H3BO3 and ZnO. The Lu2.94-xYXAl5O12:0.06Ce phosphor in glasses (PIGs) is prepared by low-temperature co-sintering bismuthate glass frits and Lu2.94-xYXAl5G12:0.06Ce (X=0~0.8) phosphors. The luminous efficiency, correlated color temperature, CIE coordinates of the LED device is studied under different current by stc-4000 high accuracy array spectroradiometer and PMS-80 visible light spectroscopy analyzing system. Research results show that the luminous efficiency of the light emitting diode (LED) device decreases about 16%, significantly less variation in correlated color temperature, CIE coordinates without shift with the current gradually increasing from 10 mA to 30 mA. Being lack of red light component, the warm white-LED with high color rendering index (CRI) is constructed by coating a layer red phosphor film in spinning method on green phosphor glass in the experiment, which promotes further the application of green phosphor glass in white-LED.