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Published on: November 16, 2018
Improvement in Light Extraction Efficiency of InGaN/GaN Blue Light Emitting Diodes Using Sidewall Texturing
Ja-Yeon Kim1, Jong-Rak Park2, Min-Ki Kwon2
1Light Emitting Diode Convergence Team, Korea Photonics Technology Institute (KOPTI), Gwangju 500-460, Korea.
Abstract:
Herein, we reported the effects of the geometric morphology of the sidewall on the extraction efficiency of GaN-based light-emitting diodes (LEDs). We performed numerical analysis based on the ray-tracing method. We found that the extraction efficiency of the LEDs increased with the texturing of the sidewall. The light output intensity of the LEDs (at an injection current of 100 mA) increased by 13.8% after sidewall texturing. These results confirmed that the geometric morphology of the sidewall plays an important role in improving the extraction efficiency of LEDs.
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