Defect-minimized directly grown graphene-based solar cells

Abstract Using plasma-enhanced chemical vapor deposition (PECVD) to directly grow graphene nanowalls (GNWs) on silicon preparate the solar cells is compatible with current industrial production. However, many defects in GNWs hinder improvement of power conversion efficiency (PCE) cells. In this work, we found that can be reduced under condition keeping appropriate sheet resistance by simultaneously reducing growth temperature and increasing time. Then, a PCE 3.83% was achieved minimizing ensuring adequate coverage bare planar silicon. The were further adding poly(3,4-ethylenedioxythiophene) (PEDOT):Nafion passivation coating, significantly improved 10.55%. Our work provides an innovative path simple approach minimize grown for high-efficiency