Towards highly efficient thin-film solar cells with a graded-bandgap CZTSSe layer
Towards highly efficient thin-film solar cells with a graded-bandgap CZTSSe layer
A coupled optoelectronic model was implemented along with the differential evolution algorithm to assess the efficacy of grading the bandgap of the CZTSSe layer for enhancing the power conversion efficiency of thin-film CZTSSe solar cells. Both linearly and sinusoidally graded bandgaps were examined, with the molybdenum backreflector in the solar …