YAG:Ce^(3+)荧光粉最佳配方及其烧结工艺的探究(英文)

Exploring on the optimal prescription and sintering technology of YAG:Ce^(3+) phosphor

由于YAG:Ce3+荧光粉在白光发光二极管中的广泛应用,使其受到越来越多的关注.但是出于商业利益,其最佳配方和烧结工艺却是保密的.利用固相法,通过控制所掺杂Ce3+的浓度及调节烧结温度制备一系列YAG:Ce3+荧光粉.测试结果表明:当激发光波长为460 nm时,该荧光粉的发射波长为540 nm;最佳掺杂Ce3+的浓度及烧结温度分别为2%和1 400℃;此外,发射波长有红移的现象,此更符合现代固态照明对色度的需要.

YAG：Ce^3＋ phosphor receives extensive interest owing to its applications in the light emitting diode （LED） for white LED lighting. But the optimum prescription and the sintering technology of the phosphor are secret because of commercial profit. For this reason, a series of YAG： Ce^3＋ phosphors of high performance with diverse photoluminescence properties were prepared and obtained via controlling the Ce^3＋ doped concentration and adjusting the sintering temperature by solid state reaction. The results indicated that when they were excited by the blue source with wavelength of 460 nm, bright yellow emission locating at 540 nm would be observed. Furthermore, the optimal concentration of Ce^3＋ and the optimal sintering temperature were found to be 2% and 1 400 ℃, respectively. In addition, the emission wavelength shifted to the red direction, which would meet the solid-state white lighting requirements of chromaticity.