%0 Journal Article %T Nearly Efficiency-Droop-Free AlGaN-Based Ultraviolet Light-Emitting Diodes with a Specifically Designed Superlattice p-Type Electron Blocking Layer for High Mg Doping Efficiency %A Chunshuang Chu %A Hao-Chung Kuo %A Kangkai Tian %A Mengqian Fang %A Sung-Wen Huang Chen %A Wengang Bi %A Yonghui Zhang %A Zi-Hui Zhang %J Archive of "Nanoscale Research Letters". %D 2018 %R 10.1186/s11671-018-2539-9 %X Schematic architectural structures for the studied LEDs. The sketched energy band diagrams for the two p-EBLs are also provided: LED A has the p-Al0.60Ga0.40N-based EBL and LED B has the p-Al0.45Ga0.55N/Al0.60Ga0.40N superlattice EBL. The p-Al0.45Ga0.55N/Al0.60Ga0.40N superlattice EBL is specifically designed such that it initiates the thin p-Al0.45Ga0.55N layer so that the interface for the p-Al0.45Ga0.55N/Al0.56Ga0.44N last quantum barrier possesses negative polarization interface charges. E means energy level %K DUV LED %K Superlattice p-EBL %K Hole injection %K Electron leakage %K Efficiency-droop-free %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5915986/