含能量轉移螢光粉體之抗藍光LED高分子封裝材料

Abstract

本論文成功開發抗藍光複合材料應用於白光發光二極體，透過摻雜抗藍光無機發光粉，吸收LED晶片所產生的藍光，能量轉移至更長波長的藍光(波長大於450 nm)或是轉移到綠光到紅光之間發光範圍，把危害人眼的短波長藍光區域有效的再利用達到綠能與節能之目的。 另外，將博美晶公司提供的LuAG螢光粉透過表面改質讓螢光粉表面吸附抗反射薄膜。除了能夠達到表面保護效果，亦能夠減少能量損失於表面上。量測的結果顯示經過修飾表面的LuAG螢光粉在螢光強度上有提升的現象。其後將表面改質過後的LuAG螢光粉應用於螢光膠上，並且與純LuAG螢光粉所製作而成的螢光膠做比較。在頻譜上發現表面改質過後的LuAG螢光粉的發光效率都有較佳的表現。 這種想法與設計不僅降低了短波長藍光對人眼的傷害並且經過表面改質使效率提升。因此可以應用在目前的照明、電子設備、行動裝置等等，使LED裝置更加貼近人性。

This paper successfully developed anti-blue light complex materials used in white light-emitting diodes. The anti-blue inorganic phosphor can transfer the energy from the blue light generated by the LED chip to a longer wavelength (greater than 450 nm) to the green or red light in the visible range by doping process. The short-wavelength blue light that harms eyes would be effectively reduced, which achieves the purpose of green energy and energy conservation. In addition, the anti-reflective layer can be coated on the surface of the LuAG phosphors provided from the Pro-Magic company through surface modification. Apart from achieving the effect of surface protection, the energy loss on the surface can also be reduced. The results of the measurement showed that the LuAG phosphors enhanced the fluorescence intensity after surface modification. Thereafter, LuAG phosphors were applied to the fluorescent glue and compared with that made of pure LuAG phosphors. The luminous efficiency of the LuAG phosphors showed better performance after the surface modification.