研究噴塗螢光粉層對白光發光二極以之特性影響

Study of white Light-emitting diode with a jet phosphor layer

黃桓俞(Yu-Hang Huang)

指導教授 ： 林俊良

共同指導教授 ： 陳耀煌

崑山科技大學/工程學院/電子工程研究所/碩士(2011年)

摘要

發光二極體(Light Emitting Diode，LED)是一種節約能源的環保照明光源，本研究提出了新穎的脈衝噴射(Pulsed Jet)螢光粉技術，將YAG:Ce3+ 均勻塗怖於藍光晶粒，改善白光均勻以及提升發光效率；另一方面，掺雜抗沉澱粉於螢光粉中，可減少螢光粉添加量，以及改善飽和電流與提升發光效率。
本研究首先利用Pulsed Jet YAG:Ce3+ 於藍光晶粒，由實驗結果得知Pulsed Jet塗怖方式之光通量可提升7.08%，均勻性比傳統螢光粉塗怖方式提升了7%，Pulsed Jet塗怖方式的螢光粉厚度為216 μm；另一方面掺雜抗沉澱於YAG:Ce3+，光通量提升2.9%；最後利用Pulsed Jet YAG:Ce3+ 並掺雜抗沉澱粉塗怖於藍光晶粒，光通量比傳統LED提升了10.3%，但操作電流為900 mA 時，Pulsed Jet掺雜抗沉澱粉於YAG:Ce3+之高功率LED光通量則比未掺雜之剛高功率LED高通量提升了18%。

關鍵字

脈衝噴塗 ； 白色發光二極體 ； 螢光粉

並列摘要

Light Emitting Diode (LED) is an environmentally friendly energy saving lighting, this study proposes a novel pulse jet (Pulsed Jet) phosphor technology, YAG:Ce3+ evenly spread terror on the blue grain, improve and enhance the luminous efficiency white uniform; the other hand, anti-doping in the phosphor powder in precipitation can reduce the amount of fluorescent powder to add and improve saturation current and improve light efficiency.
In this study, the first use of Pulsed Jet YAG:Ce3+ Blu-ray crystal, The results indicate that Pulsed Jet terror way of flux coating can be improved 7.08%, the uniformity of terror than the traditional way of phosphor coating to enhance the 7%, Pulsed Jet Tu terror way of phosphor thickness of 216 μm; the other hand, settling on anti-doped YAG:Ce3+, 2.9% to enhance the luminous flux; the last use of Pulsed Jet YAG:Ce3+ and doped precipitated powder coated anti-terror Blu-ray crystal, luminous flux than the traditional LED upgrade 10.3%, but when the operation current of 900 mA, Pulsed Jet precipitated powder anti-doping in YAG:Ce3+ high power LED's luminous flux than in the undoped high-power LED just high-throughput improved 18%。

並列關鍵字

Pulsed Jet ； White Light-Emitting Diode ； Phosphor

參考文獻

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