Improvement of green InGaN-based LEDs efficiency using a novel quantum well structure

Li Yangfeng^{1, 2}, Jiang Yang^{1, 2}, Die Junhui^{1, 2}, Wang Caiwei^{1, 2}, Yan Shen^{1, 2}, Ma Ziguang^{1, 2}, Wu Haiyan^{1, 2}, Wang Lu^{1, 2}, Jia Haiqiang^{1, 2}, Wang Wenxin^{1, 2}, Chen Hong^{1, 2, †}

The EL spectra at different current injections of LED A and LED B. (a) The EL spectra at different current injection of LED A. Even at 150-mA current injection, the blue light integrated intensity is less than 2.5% of the green light integrated intensity, remaining good monochromaticity. (b) The EL spectra at different current injections of LED B. Only one green light emission peak lies in the spectra.