Facilitated Carrier Collection of Surface-Textured Hybrid PEDOT:PSS-Silicon Solar Cells Using Kirigami Graphene

Abstract

The surface textures of hybrid solar cells are composed of inverted microscale pyramidal(IP) and nanowire structures, yielding a low AM1.5G weighted reflectance of 6.4%. The hybrid solar cells incorporating the kirigami graphene clearly show better performance than those without graphene or with planar graphene. The specific pattern made the 2D graphene can highly increase the conformal coverage on silicon texture, seem like the 3D material. The device with two-layer kirigami graphene has exhibits the highest fill factor (FF) of 67.98% and a power conversion efficiency (PCE) of 11.01%, compared to the reference counterpart with an FF of 65.58% and a PCE of 10.03%.