초록 |
Here, we demonstrate an efficient approach to dramatically enhance the photon harvesting in planar heterojunction solar cells by using highly oriented pentacene crystals grown on graphene. The quasi-epitaxial growth of pentacene significantly enhanced overall optoelectronic properties including light absorption, exciton diffusion, charge transport and interfacial energetics. The photovoltaic performance showed overall increment, leading to nearly 500% increment in maximum power conversion efficiency. |