Advantages of blue InGaN light-emitting diodes with AlGaN barriers.
The advantages of blue InGaN light-emitting diodes (LEDs) with AlGaN barriers are studied numerically. The performance curves, energy band diagrams, electrostatic fields, and carrier concentrations are investigated. The simulation results show that the InGaNAlGaN LED has better performance than its conventional InGaNGaN counterpart owing to the increase of hole injection and the enhancement of electron confinement. The simulation results also suggest that the efficiency droop is markedly improved when the traditional GaN barriers are replaced by AlGaN barriers.
Chang
Jih-Yuan
JY
Department of Physics, National Changhua University of Education, Changhua 500, Taiwan.
Tsai
Miao-Chan
MC
Kuo
Yen-Kuang
YK