High-Efficiency Multi Quantum Well Blue LED Using 2D-SiC as an Active Material

Due to its unique optical and electrical features, two-dimensional (2D) SiC has recently fascinated tremendous attention as an active material for optoelectronic devices. Here we numerically design a high-performance multi-quantum well (MQW) blue light-emitting diode (LED) using 2D-SiC. Our study suggests that for a rectangular potential well of 2D-SiC, having 4H-SiC as a quantum barrier and GaN as the electron blocking layer is an efficient electron confining structure, and almost all the recombination is radiative, and injection efficiency is high. Due to this effect, the resultant internal quantum efficiency is also higher. The extraction efficiency is found to be around 22% for flat design, which can further be increased. The most effective improvement has been founded in the decrease in efficiency droops at high injection current. The internal quantum efficiency is constantly above 98% up to 150 mA. The CIE color coordinate refers to the supreme blue color and paves that the considered LED is a good candidate for LED display manufacturing.