GaAsP / InGaAs / GaAs Solar Cells with Quantum Confinement and Balanced Tensions

Abstract

A design of de GaAsP/InGaAs/GaAs solar cell is presented that allows to model high efciency devices. The electric eld and stress, tensile and compressive, are considered in order to compute the electron and hole dispersion relation E(k) in conduction and valence band. Similarly, the optical transitions in quantum well and barriers were evaluated to calculate the quantum internal efciency and the photocurrent. GaAsP/ InGaAs/GaAs solar cell is optimized to reach the maximum performance by means of J-V relation. Our model was used to determine the highest efciencies for cells containing quantum wells under varying degrees of strain. We show that cells with highly strained quantum wells achieve high efciencies.