https://scholars.lib.ntu.edu.tw/handle/123456789/406388
標題: | Design optimization and experimental verification of white-light-emmiting diodes using multiple phosphor films | 作者: | Kan D. Wu E. Wang D.-M. |
關鍵字: | Mechanism;Phosphor;Phosphor film;White LED | 公開日期: | 2006 | 卷: | 6337 | 來源出版物: | Proceedings of SPIE - The International Society for Optical Engineering | 摘要: | White light-emitting-diodes (LEDs) are known as a new generation lighting source. Using a blue LED with a phosphor layer which is excited by blue light and down-converting to the second light, such as yellow light, white light can be produced. Using a one-dimensional mathematical model, we can describe the light propagation by simple absorption, conversion, and reflection terms. We use a multiple phosphor film coating method to determine the coefficient of the model, followed by analysis to determine the optimum phosphor layer LED package. With a phosphor layer plus a yellow light reflector, the white light extraction efficiency could be above 0.9 relative the conventional package's 0.6-0.8. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/406388 | ISBN: | 9780819464163 | ISSN: | 0277786X | DOI: | 10.1117/12.675679 |
顯示於: | 化學工程學系 |
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