Conduction and Valence Band Positions of Ta 2 O 5 , TaON, and Ta 3 N 5 by UPS and Electrochemical Methods

Chun, Wang‐Jae; Ishikawa, Akio; Fujisawa, H.; Takata, Tsuyoshi; N. Kondo, Junko; Hara, Masahiko; Kawai, Maki; Matsumoto, Yasumichi; Domen, Kazunari

doi:10.1021/jp027593f

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Conduction and Valence Band Positions of Ta 2 O 5 , TaON, and Ta 3 N 5 by UPS and Electrochemical Methods

Published in The Journal of Physical Chemistry B • Jan 25, 2003

Authors:

Wang‐Jae Chun

Akio Ishikawa

H. Fujisawa

Abstract

The conduction and valence band edges for electronic band gaps and Fermi levels are determined for Ta 2 O 5, TaON, and Ta 3 N 5 by ultraviolet photoelectron spectroscopy (UPS) and electrochemical analyses. Reasonable agreement between the results of the two methods is obtained at the pH at which the...

Subject

Valence (chemistry)

Electrochemistry

Materials science

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