A Novel Design of High-Efficiency Multi-junction Solar Cell with Quantum/Barrier Wells (QBW-SC) Using Drift–Diffusion Mothod

To achieve the best results of quantum well systems, a solar cell with the best output results is required. This field of study is important because of the capacity to increase the efficiency of the solar cell, which can absorb most of the solar spectrum, which conventional transparent or crystal solar cells cannot do. In this paper, a novel multi-junction solar cell with 13 layers of barrier wells and 14 layers of quantum wells are included in the middle part of the reference solar cell is designed and simulated. To have the best outputs from the Quantum/Barrier Wells Solar Cell (QBW-SC), the thickness of the window, emitter, and base layers are selected as 550, 50, and 50 nm, respectively. In the best case, the short-circuit current is JSC = 71.8594 mA/cm2 and the open-circuit voltage is VOC = 0.99 V. The rate of fill factor and efficiency are FF = 87.3472