High efficiency InGaP/GaAs solar cell with Sub-wavelength structure on AlInP window layer

In this study, InGaP/GaAs solar cells fabricated by a sub-wavelength surface texture process are presented. The characteristics of the InGaP/GaAs solar cells with and without the sub-wavelength surface texture are studied. The conversion efficiency measured under one-sun air mass 1.5 global illumination at room temperature can also be improved from 10.8%. The simulated result of the sub-wavelength structure by the RCWA was demonstrated that absorption of the solar cell will increase by the sub-wavelength surface texture.