"Hidden hydrogen" in as-grown ZnO

An O - H stretching line at 3326.3 cm − 1 was previously assigned to a shallow donor that is introduced into ZnO by H . This infrared line has been found to appear in as-grown ZnO samples when they are annealed near 400°C without an external source of H , showing that there is an H -containing defec...

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Bibliographic Details
Published in:Applied physics letters 2004-12, Vol.85 (23), p.5601-5603
Main Authors: Shi, G. Alvin, Saboktakin, Marjan, Stavola, Michael, Pearton, S. J.
Format: Article
Language:English
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Summary:An O - H stretching line at 3326.3 cm − 1 was previously assigned to a shallow donor that is introduced into ZnO by H . This infrared line has been found to appear in as-grown ZnO samples when they are annealed near 400°C without an external source of H , showing that there is an H -containing defect in commercially available ZnO that is not seen by infrared spectroscopy that can be converted into a shallow donor. The interstitial H 2 molecule in ZnO is suggested as a candidate for the "hidden" H species.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1832736