高效荧光材料4CzTPN-Ph对LED发光特性的影响

为增强白光发光二极管(LED)的红光成分,通过在Y AG荧光粉中掺杂质量分数分别为1、2、3、7和 11%的高效红色荧光材料4CzTPN-Ph,制备了白光LED,提高 了传统白光 LED的显色指数。分析了4CzTPN-Ph对白光LED参数的影响。结果表明,4C zTPN-Ph可以 被445nm的蓝光激发,掺杂浓度为7%时, 红光峰值最强,同时出现了光谱展宽现象；当掺杂浓度为11%时,显色指数达到87. 3%的最大值。

Influence of hyperfluorescence material of 4CzTPN-Ph on emission characteristics of white LED

Traditional materials of preparing white LED are blue chip and yellow YAG,b ut they have a low CRI and lack of red component.In this paper,hyperfluore scence materials of 4CzTPN-Ph with the mass fractions of 1%,2%,3%,7% and 11% are mixed by adding YAG phosphor to preparate white LED.With this method,the device spectrum is optimized and the CRI is improve.The performance of white LED wi th each parameter is analyzed. The experiment shows that 4CzTPN-Ph can be excited by the blue light at 445nm from the LED chip.With the increase of doping concentration,a stronger red emi ssion near 600nm is observed.When the 4CzTPN-Ph is mixed with mass fraction of 7%,th e red peak is the strongest,and spectrum broadening effect can be observed at the same time.So the hyperfluorescence material 4CzTPN-Ph is able to be filled in the missing re d spectral components.When the 4CzTPN-Ph is mixed with mass fraction of 11%,the highest CR I of the prepared white LED can reach 87.3%.