Abstract

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Author(s):: XU Dikai; YU Xuegong; YANG Deren; State Key Laboratory of Silicon Materials, Department of Materials Science & Engineering,
Zhejiang University

Abstract:: Since the fossil fuels are exhausting, energy issue becomes the primary problem for the whole world. Solar energy is supposed to prevail in the future world energy structure. Graphene, which has the fastest carrier mobility among known materials, is of brilliant chemical stability and high transparency in the visible light range. Therefore, Graphene is suitable material for photovoltaic applications. GrapheneSilicon（GrSi） solar cell, which is a new kind of Sibased Schottky junction solar cell, has a great application potential due to its simple and lowcost fabrication process. Since it was first reported in year of 2010, the GrSi solar cell has attracted considerable interest. Rapid developments of power converse efficiency from 1.65% to 15.6% have been witnessed. In this article, the device structure and working mechanism of GrSi solar cells are introduced. Meanwhile, recent development and breakthroughs concerning optimization in reflection of Si surface, work function and conductance of Gr films, quality of GrSi interface and nGr/pSi solar cells are reviewed.