期刊
PHYSICAL REVIEW B
卷 89, 期 23, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.89.235203
关键词
-
资金
- German Research Foundation [LA 1397/4-1]
A Raman study on hydrogen donors in ZnO reveals the properties of bond-centered hydrogen (H-BC) and hydrogen trapped in the oxygen vacancy (H-O). The donors are identified by their electronic 1s -> 2s(2p) transitions and their characteristic local vibrational modes. The H-O donor was detected preferentially below the sample surface, where a high oxygen vacancy concentration is generated by thermal treatment of the samples. H-BC and H-O exhibit different thermal stabilities and their concentrations depend strongly on the sample history. Molecular hydrogen is an essential part of the interplay of the two hydrogen donors.
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