EPITAXIAL LIFT OFF PROCESSED GAAS THIN FILM SOLAR CELLS INTEGRATED WITH NON TRACKING MINI COMPOUND PARABOLIC CONCENTRATORS

摘要

There is disclosed a method of preparing a photovoltaic device. In particular the method comprises making thin film GaAs solar cells integrated with low cost thermoformed lightweight and wide acceptance angle mini CPCs. The fabrication combines ND ELO thin film cells that are cold welded to a foil substrate and subsequently attached to the CPCs in an adhesive free transfer printing process. There is also disclosed an improved photovoltaic device made by the disclosed method. The improved photovoltaic device comprises a thin film solar integrated with non tracking mini compound parabolic concentrators wherein the plastic compound parabolic concentrator comprise two parabolas tilted at an angle equal to the acceptance angle of the compound parabolic concentrator.