The graphene/silicon photoelectrode for solar energy conversion systems

2015 Fiscal Year Final Research Report

• Project/Area Number: 15K14161
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Structural/Functional materials
• Research Institution: Kyoto University
• Principal Investigator: Sugimura Hiroyuki 京都大学, 工学(系)研究科(研究院), 教授 (10293656)
• Co-Investigator(Kenkyū-buntansha): UTSUNOMIYA TORU 京都大学, 大学院工学研究科, 助教 (70734979)
• Project Period (FY): 2015-04-01 – 2016-03-31
• Keywords: グラフェン / 光電気化学 / シリコン / 表面処理 / 2次元材料

Outline of Final Research Achievements

We immobilized the graphene derivatives, Graphene Oxide (GO), on the hydrogen-terminated Si(111) surface. Because of the gas barrier properties, the immobilized sheets are expected to be the protective coating against the surface oxidation, which forms the insulating silicon oxide layer. In this study, we studied graphene derivatives/Si interfaces by using X-ray photoelectron spectroscopy, atomic force microscopy, and electrochemical measurements. The preserved conductivity and electrochemical properties clearly showed the barrier properties of the sheet against oxidation.

Free Research Field

表面工学