Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10155753 | Superlattices and Microstructures | 2018 | 17 Pages |
Abstract
The optical and physical properties of AlGaN-based ultraviolet light-emitting diodes with specific design of convex quantum barriers are numerically investigated in this work. The simulation results show that the designed LED with convex quantum barriers has been enhanced by 43.6% in light output power, while the efficiency droop has been reduced to 14.0% at an injection current of 180â¯mA, compared with the conventional LED with a stationary component Al0.15Ga0.85N barriers. Through the further analysis it can conclude that these improvements are mainly attributed to the enhanced hole injection efficiency and the suppressed electron overflow as well as the reduction of the electrostatic fields in the active region.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Linyuan Wang, Guang Li, Weidong Song, Hu Wang, Xingjun Luo, Yiming Sun, Bolin Zhang, Jian Jiang, Shuti Li,