Abstract
ZnO one-dimensional nanostructures were synthesized in thin-film form on Si substrates by the vapour-liquid-solid technique using Au as catalyst. The morphology of the ZnO nanostructures (from wire/ribbon to rod) was controlled by varying the thicknesses of the Au layers on the Si substrates. The X-ray diffraction studies of the ZnO nanostructures indicated high crystallinity and preferred orientation along the (002) plane of the wurtzite phase. The compositional analysis of ZnO nanostructures by energy-dispersive X-ray analysis revealed their chemical purity. High-resolution transmission electron microscopy indicated dislocation-free structure. The single crystallinity of the ZnO nanostructures was examined by selected-area electron diffraction. The room-temperature photoluminescence spectra of the ZnO nanostructures indicated high intensity of the ultraviolet excitonic emission. Two very week defect-related visible emissions were also observed which revealed almost a defect-free structure and good optical quality of the synthesized material.
| Language | English |
|---|---|
| Pages | 196-200 |
| Number of pages | 5 |
| Journal | Materials Chemistry and Physics |
| Volume | 87 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Sep 2004 |
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Keywords
- One-dimensional nanostructures
- Photoluminescence
- Ultraviolet emission
- Vapour-liquid-solid process
- ZnO films
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Microstructural and photoluminescent characterization of one-dimensional ZnO nanostructures prepared by catalyst-assisted vapour-liquid-solid technique. / Chakrabarti, S.; Chaudhuri, S.
In: Materials Chemistry and Physics, Vol. 87, No. 1, 01.09.2004, p. 196-200.Research output: Contribution to journal › Article
TY - JOUR
T1 - Microstructural and photoluminescent characterization of one-dimensional ZnO nanostructures prepared by catalyst-assisted vapour-liquid-solid technique
AU - Chakrabarti, S.
AU - Chaudhuri, S.
PY - 2004/9/1
Y1 - 2004/9/1
N2 - ZnO one-dimensional nanostructures were synthesized in thin-film form on Si substrates by the vapour-liquid-solid technique using Au as catalyst. The morphology of the ZnO nanostructures (from wire/ribbon to rod) was controlled by varying the thicknesses of the Au layers on the Si substrates. The X-ray diffraction studies of the ZnO nanostructures indicated high crystallinity and preferred orientation along the (002) plane of the wurtzite phase. The compositional analysis of ZnO nanostructures by energy-dispersive X-ray analysis revealed their chemical purity. High-resolution transmission electron microscopy indicated dislocation-free structure. The single crystallinity of the ZnO nanostructures was examined by selected-area electron diffraction. The room-temperature photoluminescence spectra of the ZnO nanostructures indicated high intensity of the ultraviolet excitonic emission. Two very week defect-related visible emissions were also observed which revealed almost a defect-free structure and good optical quality of the synthesized material.
AB - ZnO one-dimensional nanostructures were synthesized in thin-film form on Si substrates by the vapour-liquid-solid technique using Au as catalyst. The morphology of the ZnO nanostructures (from wire/ribbon to rod) was controlled by varying the thicknesses of the Au layers on the Si substrates. The X-ray diffraction studies of the ZnO nanostructures indicated high crystallinity and preferred orientation along the (002) plane of the wurtzite phase. The compositional analysis of ZnO nanostructures by energy-dispersive X-ray analysis revealed their chemical purity. High-resolution transmission electron microscopy indicated dislocation-free structure. The single crystallinity of the ZnO nanostructures was examined by selected-area electron diffraction. The room-temperature photoluminescence spectra of the ZnO nanostructures indicated high intensity of the ultraviolet excitonic emission. Two very week defect-related visible emissions were also observed which revealed almost a defect-free structure and good optical quality of the synthesized material.
KW - One-dimensional nanostructures
KW - Photoluminescence
KW - Ultraviolet emission
KW - Vapour-liquid-solid process
KW - ZnO films
UR - http://www.scopus.com/inward/record.url?scp=3242673256&partnerID=8YFLogxK
U2 - 10.1016/j.matchemphys.2004.05.037
DO - 10.1016/j.matchemphys.2004.05.037
M3 - Article
VL - 87
SP - 196
EP - 200
JO - Materials Chemistry and Physics
T2 - Materials Chemistry and Physics
JF - Materials Chemistry and Physics
SN - 0254-0584
IS - 1
ER -