發(fā)布時間：2018-12-26 10:05

【摘要】：研究了膠體固化溫度對高性能量子點(diǎn)白光LED的光學(xué)性能的影響。首先運(yùn)用一種新結(jié)構(gòu)的光轉(zhuǎn)換材料量子點(diǎn)-介孔硅微球,將其與熒光粉和硅膠共混形成熒光膠體,點(diǎn)涂到藍(lán)光芯片上形成一種新型的量子點(diǎn)轉(zhuǎn)換LED。相比傳統(tǒng)的LED,這種新型LED的光效提升56%,顯色指數(shù)Ra達(dá)96,在20~400 mA電流驅(qū)動下Ra維持在92以上。隨后分析膠體固化溫度對其光學(xué)性能的影響,并分析了物理機(jī)制。結(jié)果表明:在100℃固化時光效和Ra衰減均較嚴(yán)重;60℃固化時光效衰減很小,Ra的衰減約為100℃時的1/2。衰減的原因是固化積累的熱量影響了量子點(diǎn)本身的性能,從而影響光功率大小,最終導(dǎo)致光效和Ra的衰減。
[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，

本文編號：2391941