Designing few-layer graphene Schottky contact solar cells: Theoretical efficiency limits and parametric optimization

We theoretically study the efficiency limits and performance characteristics of few-layer graphene–semiconductor solar cells (FGSCs) based on a Schottky contact device structure. model compare power conversion (PCE) various configurations by explicitly considering non-Richardson thermionic emission across graphene/semiconductor heterostructures. The calculations reveal that ABA-stacked trilayer graphene–silicon cell exhibits maximal exceeding 26% due to lower reversed saturation current when compared ABC-stacking configuration. thermal coefficients PCE for ABA ABC stacking FGSCs are –0.061%/K –0.048%/K, respectively. Our work offers insights into optimal designs graphene-based cells, thus paving route toward design high-performance FGSC future nanoscale energy converters.