Study of white Light-emitting diode with a jet phosphor layer
| Autor: | Yu-Hang Huang, 黃桓俞 |
|---|---|
| Rok vydání: | 2011 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 99 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%。 |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|