2021年第68回応用物理学会春季学術講演会

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1 応用物理学一般 » 1.1 応用物理一般・学際領域

[17a-Z04-1~11] 1.1 応用物理一般・学際領域

2021年3月17日(水) 09:00 〜 12:00 Z04 (Z04)

藤川 知栄美(東海大)、松谷 晃宏(東工大)

09:30 〜 09:45

[17a-Z04-3] A design study of TiO2/n-Si energy band structure for charge carrier transportation in water splitting electrode

〇(D)Vytautas Kavaliunas1,2、Yoshinori Hatanaka1、Giedrius Laukaitis2、Hidenori Mimura1 (1.Shizuoka Univ.、2.Kaunas Univ. of Tech)

キーワード:Titanium dioxide, Photocatalysis, Water splitting electrode

The present work aims to design a semiconductor system for an effective charger carrier separation and transportation process in a water splitting electrode. Therefore, a conduction band discontinuity between anatase phase titanium dioxide (A-TiO2) and n-type silicon (n-Si) was investigated in this study. According to the results, having a low doped n-Si substrate, only charger transfer from TiO2 to n-Si is possible. With increased dopant density, the depletion layer narrows and enables the tunneling effect which allows a current flow both directions without knee and breakdown voltage (ohmic contact).