▎ 摘　　要

Using density functional theory combined with the effective screening medium method, the energetics and electronic structure of a C-60 molecular sheet adsorbed on graphene were studied in terms of biaxial strains. The optimum spacing and interlayer interaction monotonically decreases and increases, respectively, with an increasing biaxial tensile strain. The biaxial compressive strain induces electron transfer from the graphene to C-60 at a 2% lateral compression, leading to an all-carbon charge transfer complex. The heterosheet possesses an intrinsic dipole moment along the graphene-to-C-60 molecular layer direction. (C) 2017 The Japan Society of Applied Physics.