Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/13323
Title: Hydrogen as an unstable shallow donor in oxides
Authors: Chen, WP
He, KF
Wang, Y 
Hu, YM
Cao, JL
Chan, HLW 
Issue Date: 2010
Publisher: Institute of Pure and Applied Physics
Source: Japanese journal of applied physics, 2010, v. 49, no. 5 PART 1, p. 0511031-0511034 How to cite?
Journal: Japanese journal of applied physics 
Abstract: Hydrogen is electrochemically introduced into a monoclinic Nb 2O5 in a large amount, which donates electrons to Nb 5+ and decreases the resistivity of Nb2O5 by more than six orders of magnitude. Both X-ray photoelectron spectroscopy and crystal structure analyses show that ionized hydrogen, namely, proton, is not connected to an oxygen ion by a strong O-H bond, and hydrogen can be easily driven out of this oxide as molecular hydrogen by annealing at 150 °C. This finding provides a relatively direct evidence for an unstable state of a hydrogen shallow donor in oxides and should contribute much to the general understanding of hydrogen in oxides.
URI: http://hdl.handle.net/10397/13323
ISSN: 0021-4922
EISSN: 1347-4065
DOI: 10.1143/JJAP.49.051103
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