Hydrogen: A Relevant Shallow Donor in Zinc Oxide
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- 10 January 2002
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 88 (4) , 045504
- https://doi.org/10.1103/physrevlett.88.045504
Abstract
Electron paramagnetic resonance and Hall measurements show consistently the presence of two donors ( and ) in state-of-the-art, nominally undoped ZnO single crystals. Using electron nuclear double resonance it is found that shows hyperfine interaction with more than 50 shells of surrounding nuclei, proving that it is a shallow, effective-mass-like donor. In addition exhibits a single interaction with a H nucleus ( ), thus H is the defining element. It is in agreement with the prediction of Van de Walle [Phys. Rev. Lett. 85, 1012 (2000)] that H acts as a donor in ZnO. The concentration of is emphasizing its relevance for carrier statistics and applications.
Keywords
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