LED and Laser II

[LEDIA8-01] Highly Efficient AlGaN UVB LEDs using Graded Mg-doped p-type Multi-Quantum-Barrier Electron Blocking Layer (Grad p-MQB-EBL)

*MUHAMMAD KHAN^1,2, Noritoshi Maeda¹, Masafumi Jo¹, Yukio Kashima³, Yoichi Yamada⁴, Hideki Hirayama^1,2 (1. RIKEN Cluster for Pioneering Research (CPR), 2. RIKEN Center for Advanced Photonics (RAP) , 3. Marubun Corporation, Chuo, Tokyo 109-8577, Japan, 4. Yamaguchi University)