GaN基LED芯片电极结构的优化及制备 下载: 1306次
ing at the problem of uneven current distribution in GaN-based LED chip, the traditional electrode structure is optimized. By establishing a three-dimensional simulation model based on finite element analysis software COMSOL, the current distribution in the active layer of chip electrode with optimized structure and traditional structure is simulated respectively. The results show that the current distribution in the chip with optimized structure is more uniform. Then, LED chips of various structures are prepared and tested for photoelectric performance. Experimental results show that changing the shape of the N electrode to a fan-shaped structure can improve the light output efficiency of the LED. When the input current is 20 mA, the output light power of the LED chip is 31.84 mW, and the light extraction efficiency is 52.03%, which is 6.14% higher than that of the conventional LED chip.
晁鹏飞, 许英朝, 刘春辉, 吴天雨, 李洋洋, 刘建宁. GaN基LED芯片电极结构的优化及制备[J]. 激光与光电子学进展, 2020, 57(7): 072301. Pengfei Chao, Yingchao Xu, Chunhui Liu, Tianyu Wu, Yangyang Li, Jianning Liu. Optimization and Preparation of GaN-Based LED Chip Electrode Structure[J]. Laser & Optoelectronics Progress, 2020, 57(7): 072301.