Experimental confirmation of the predicted shallow donor hydrogen state in zinc oxide.
Phys Rev Lett
; 86(12): 2601-4, 2001 Mar 19.
Article
in En
| MEDLINE
| ID: mdl-11289990
ABSTRACT
We confirm the recent prediction that interstitial protium may act as a shallow donor in zinc oxide, by direct spectroscopic observation of its muonium counterpart. On implantation into ZnO, positive muons--chemically analogous to protons in this context--form paramagnetic centers below about 40 K. The muon-electron contact hyperfine interaction, as well as the temperature and activation energy for ionization, imply a shallow level. Similar results for the cadmium chalcogenides suggest that such shallow donor states are generic to the II-VI compounds. The donor level depths should serve as a guide for the electrical activity of interstitial hydrogen.
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Database:
MEDLINE
Type of study:
Prognostic_studies
/
Risk_factors_studies
Language:
En
Journal:
Phys Rev Lett
Year:
2001
Type:
Article
Affiliation country:
United kingdom