CAJ | 학술논문

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.
유우YAG:Ce3+형광분재백광발광이겁관중적엄범응용,사기수도월래월다적관주.단시출우상업이익,기최가배방화소결공예각시보밀적.이용고상법,통과공제소참잡Ce3+적농도급조절소결온도제비일계렬YAG:Ce3+형광분.측시결과표명:당격발광파장위460 nm시,해형광분적발사파장위540 nm;최가참잡Ce3+적농도급소결온도분별위2％화1 400℃；차외,발사파장유홍이적현상,차경부합현대고태조명대색도적수요.
YAG:Ce3+ 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:Ce3+ phosphors of high performance with diverse photoluminescence properties were prepared and obtained via controlling the Ce3+ 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 Ce3+ 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.