高显色指数高光效的新型量子点转换LED
发布时间：2018-12-26 10:05
【摘要】：研究了胶体固化温度对高性能量子点白光LED的光学性能的影响。首先运用一种新结构的光转换材料量子点-介孔硅微球,将其与荧光粉和硅胶共混形成荧光胶体,点涂到蓝光芯片上形成一种新型的量子点转换LED。相比传统的LED,这种新型LED的光效提升56%,显色指数Ra达96,在20~400 mA电流驱动下Ra维持在92以上。随后分析胶体固化温度对其光学性能的影响,并分析了物理机制。结果表明:在100℃固化时光效和Ra衰减均较严重;60℃固化时光效衰减很小,Ra的衰减约为100℃时的1/2。衰减的原因是固化积累的热量影响了量子点本身的性能,从而影响光功率大小,最终导致光效和Ra的衰减。
[Abstract]:The effect of the curing temperature of colloid on the optical properties of white LED with high performance quantum dots was studied. First, a new structure quantum dot-mesoporous silicon microsphere was used to form fluorescent colloid by blending it with phosphor and silica gel, and a novel quantum dot-converted LED. was formed on the blue chip. Compared with the traditional LED, a new type of LED, the light efficiency is increased 56%, the color rendering index (Ra) is up to 96, and the Ra is kept above 92 under the current drive of 20 ~ 400 mA. The influence of the curing temperature on the optical properties of the colloid was analyzed and the physical mechanism was analyzed. The results show that both the curing time efficiency and the Ra decay are serious at 100 鈩，
本文编号：2391941
[Abstract]:The effect of the curing temperature of colloid on the optical properties of white LED with high performance quantum dots was studied. First, a new structure quantum dot-mesoporous silicon microsphere was used to form fluorescent colloid by blending it with phosphor and silica gel, and a novel quantum dot-converted LED. was formed on the blue chip. Compared with the traditional LED, a new type of LED, the light efficiency is increased 56%, the color rendering index (Ra) is up to 96, and the Ra is kept above 92 under the current drive of 20 ~ 400 mA. The influence of the curing temperature on the optical properties of the colloid was analyzed and the physical mechanism was analyzed. The results show that both the curing time efficiency and the Ra decay are serious at 100 鈩，
本文编号：2391941
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