Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 166-168 |
| Seitenumfang | 3 |
| Fachzeitschrift | Physica Status Solidi - Rapid Research Letters |
| Jahrgang | 3 |
| Ausgabenummer | 5 |
| Frühes Online-Datum | 10 Juli 2009 |
| Publikationsstatus | Veröffentlicht - 2009 |
| Extern publiziert | Ja |
Abstract
We report on low-temperature photoluminescence studies of ZnO nanowires coated with thin metallic films. For all analyzed metals (Al, In, Au, Ni, Cu), we find an increased relative intensity of the green deep-level emission. This is accompanied by a significant reduction of the relative intensity of the surface exciton band. The observed effects are most likely related to the formation of metal induced gap states in the surface region of the ZnO nanowires. A model for the band structure in the surface region of the metal-coated nanowires is proposed that successfully explains the changes in the photoluminescence spectra after the coating process.
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Allgemeine Materialwissenschaften
- Physik und Astronomie (insg.)
- Physik der kondensierten Materie
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in: Physica Status Solidi - Rapid Research Letters, Jahrgang 3, Nr. 5, 2009, S. 166-168.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Influence of metallic coatings on the photoluminescence properties of ZnO nanowires
AU - Richters, J. P.
AU - Dev, A.
AU - Müller, S.
AU - Niepelt, R.
AU - Borschel, C.
AU - Ronning, C.
AU - Voss, T.
PY - 2009
Y1 - 2009
N2 - We report on low-temperature photoluminescence studies of ZnO nanowires coated with thin metallic films. For all analyzed metals (Al, In, Au, Ni, Cu), we find an increased relative intensity of the green deep-level emission. This is accompanied by a significant reduction of the relative intensity of the surface exciton band. The observed effects are most likely related to the formation of metal induced gap states in the surface region of the ZnO nanowires. A model for the band structure in the surface region of the metal-coated nanowires is proposed that successfully explains the changes in the photoluminescence spectra after the coating process.
AB - We report on low-temperature photoluminescence studies of ZnO nanowires coated with thin metallic films. For all analyzed metals (Al, In, Au, Ni, Cu), we find an increased relative intensity of the green deep-level emission. This is accompanied by a significant reduction of the relative intensity of the surface exciton band. The observed effects are most likely related to the formation of metal induced gap states in the surface region of the ZnO nanowires. A model for the band structure in the surface region of the metal-coated nanowires is proposed that successfully explains the changes in the photoluminescence spectra after the coating process.
UR - http://www.scopus.com/inward/record.url?scp=71149090132&partnerID=8YFLogxK
U2 - 10.1002/pssr.200903176
DO - 10.1002/pssr.200903176
M3 - Article
AN - SCOPUS:71149090132
VL - 3
SP - 166
EP - 168
JO - Physica Status Solidi - Rapid Research Letters
JF - Physica Status Solidi - Rapid Research Letters
SN - 1862-6254
IS - 5
ER -