| Citation: |
Liu Zhiqiang, Wang Liangchen, Yi Xiaoyan, Wang Libin, Chen Yu, Guo Debo, Ma Long. Surface Roughening with Sapphire Microlens Arrays in Flip-Chip GaN-Based LEDs。[J]. Journal of Semiconductors, 2007, In Press.
Liu Z Q, Wang L C, Yi X Y, Wang L B, Chen Y, Guo D B, Ma L. Surface Roughening with Sapphire Microlens Arrays in Flip-Chip GaN-Based LEDs。[J]. Chin. J. Semicond., 2007, 28(S1): 496.
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Surface Roughening with Sapphire Microlens Arrays in Flip-Chip GaN-Based LEDs。
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Abstract
The effect of surface roughness of microlens arrays on the performance of flip-chip GaN-based LEDs was investigated by simulation，and microlens arrays were fabricated on sapphire to fulfill surface roughening in flip-chip GaN-based LEDs.The results indicate that compared with conventional flip-chip GaN-based LEDs，microlens arrays roughening carl im。 prove the extraction efficiency with a factor of 1.5·and the experimental results are in good agreement with the simulation results.-
Keywords:
- GaN·based LED,
- 1CP,
- microlens arrays
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References
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