石墨烯-晶体硅光伏器件的研究进展-中国材料进展

文章信息/Info

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

摘要:: 随着化石能源的日益枯竭，能源问题成为当今世界需要解决的首要问题。在将来的世界能源结构中，太阳能有望占据主导地位。石墨烯是已知材料中载流子移动速度最快的，它化学稳定性好，且在可见光波段具有极高的透光性，非常适合应用于光伏领域。石墨烯-硅太阳电池是一种新型的硅基肖特基结太阳电池，具有制备工艺简单，制作成本低等优点，应用潜力巨大。自2010年首次报道以来，器件的光电转换效率已由1.65%迅速提升至15.6%，得到了广泛的关注。简要介绍了石墨烯-硅太阳电池的基本结构和工作原理，从硅表面反射率优化、石墨烯导电性和功函数优化、石墨烯-硅界面优化和n型石墨烯-硅太阳电池等4个方面概述了石墨烯-硅太阳电池的发展历程、研究现状和未来趋势。

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.