The 68th JSAP Spring Meeting 2021
Mar 16 - Mar 19, 2021Online Virtual Meeting
The 68th JSAP Spring Meeting 2021
Mar 16 - Mar 19, 2021Online Virtual Meeting
[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)
Keywords:
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).