▎ 摘　　要

NOVELTY - Material structure (100) comprises light absorbing layer (102), metal layer (104), graphene layer (106) which is arranged in between the light absorbing layer and metal layer, such that the graphene layer forms an electrical interface between the light absorbing layer and metal layer, where metal layer comprises copper and molybdenum. USE - Material structure for solar cell. ADVANTAGE - The material structure increases efficiency of the solar cell, is flexible and cost effective. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a solar cell, which comprises material structure. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a material structure. Material structure (100) Light absorbing layer (102) Metal layer (104) Graphene layer (106)