Enhancement of ultraviolet emissions from ZnO films by Ag doping
The Ag-doped ZnO films were deposited on Si substrates by dc reactive sputtering. Obvious enhancement of ultraviolet (UV) emission of the samples was observed due to Ag 2 O nanoclusters formatted during Ag doping. The UV emission consisted of two peaks. The 348 nm peak was attributed to Ag 2 O nanoc...
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| Veröffentlicht in: | Applied physics letters 2006-06, Vol.88 (23), p.232110-232110-3 |
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| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | The Ag-doped ZnO films were deposited on Si substrates by dc reactive sputtering. Obvious enhancement of ultraviolet (UV) emission of the samples was observed due to
Ag
2
O
nanoclusters formatted during Ag doping. The UV emission consisted of two peaks. The
348
nm
peak was attributed to
Ag
2
O
nanoclusters, and the
382
nm
one was attributed to ZnO. The strongest UV emission of a certain
Zn
O
-
Ag
2
O
film was over ten times stronger than that of a pure ZnO film, which was an exciting result. The enhancement of UV emission was caused by excitons formed at the interface between
Ag
2
O
nanoclusters and ZnO grains. |
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| ISSN: | 0003-6951 1077-3118 |
| DOI: | 10.1063/1.2211053 |