“Hidden hydrogen” in as-grown ZnO

“Hidden hydrogen” in as-grown ZnO

An O–H stretching line at 3326.3cm−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 co...

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Bibliographic Details
Published in:Applied physics letters Vol. 85; no. 23; pp. 5601 - 5603
Main Authors: Shi, G. Alvin, Saboktakin, Marjan, Stavola, Michael, Pearton, S. J.
Format: Journal Article
Language:English
Published: 06-12-2004
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Summary:An O–H stretching line at 3326.3cm−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 H2 molecule in ZnO is suggested as a candidate for the “hidden” H species.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1832736