GaN基LED光栅结构的特征参量对出光效率的影响
Journal of Tianjin Polytechnic University(2013)
Abstract
为解决GaN基LED出光效率低的问题,针对具有双光栅结构的LED的光栅结构参数进行设计;利用FDTD计算方法对LED的光场能流密度和出光效率等进行模拟仿真,计算光栅高度、光栅周期和占空比等特征参量对发光二极管出光效率的动态影响,从而改进设计,使LED出光效率能够达到最大.
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Key words
light extraction efficiency,grating structure,light-emitting diodes(LED),diffraction
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