A Repeatable Epitaxial Lift‐Off Process from a Single GaAs Substrate for Low‐Cost and High‐Efficiency III‐V Solar Cells

The effects of epitaxial materials and solar cell design on the performance of solar cells grown by the multilayer approach are investigated. The novel solar cell structure with a p-on-n type configuration suggested exhibits improved uniformity in the photovoltaic performance because of the suppression of Zn diffusion. This approach provides routes to achieve further improvements and acts as a guideline for the commercialization of the multilayer technique.