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Design optimization and experimental verification of white-light-emmiting diodes using multiple phosphor films

机译:使用多个荧光粉薄膜的白光发光二极管的设计优化和实验验证

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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.
机译:白光发光二极管(LED)被称为新一代光源。使用具有磷光体层的蓝色LED,该磷光体层被蓝光激发并且下转换为诸如黄光的第二光,可以产生白光。使用一维数学模型,我们可以通过简单的吸收,转换和反射项来描述光的传播。我们采用多重荧光粉薄膜涂覆的方法来确定模型的系数,然后通过分析来确定最佳的荧光粉层LED封装。使用磷光体层和黄光反射器,相对于传统封装的0.6-0.8,白光提取效率可以高于0.9。

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