Simulation of the optimized performance of thin-film silicon solar cell with nano-holes surface structures

The optical generation rate and surface recombination velocity (SRV) increasing with the created nano-holes depth, width, and number on the emitter layer of a thin-film silicon solar cell are studied. The trade-off between the optical generation rate and surface recombination velocity was exhibit in short-circuit current density (J_sc), Open-circuit voltage (V_oc), and conversion efficiency (η) using a two-step simulation. The simulated results indicated that a thin-film solar cell with a proper nano-holes structure on the emitter layer can be achieved a much high J_sc and η performances.