[24a-32A-1~10] 17.2 Graphene

10:30 AM - 10:45 AM JST(1:30 AM - 1:45 AM UTC)

[24a-32A-7] Induction of Chemical Reactions by Graphene-Based Tunnel Junctions: Competition between Hot-Electron and Electrochemical Effects

Nao Sakiyama¹, Kazuki Nishibara², Takayuki Arie², 〇Ryo Nouchi^2,3 (1.Osaka Pref. Univ., 2.Osaka Metro. Univ., 3.JST-PRESTO)

Keywords:

2D-material-based tunnel junction,hot carrier injection,electrochemical reaction

There are many reports on chemical reactions induced by hot carrier injection using tunnel junctions based on scanning tunneling microscopy. In contrast, we focused on scale-up compatible, thin-film-based tunnel junctions, and attempted to elucidate the mechanism behind the control of solution-based reactions using the junctions. It was found that the electrochemical effects associated with the rearrangement of ions in the solution occurred competitively with hot electron injection. In this system, the reaction mode (electrochemical or hot electron injection) can be controlled by the polarity of the applied voltage.