| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5402763 | Journal of Luminescence | 2010 | 6 Pages |
Abstract
Optical properties of ZnO nanorods (NRs) grown by vapour-liquid-solid (VLS) technique on 4H-p-SiC substrates were probed by cathodoluminescence (CL) measurements at room temperature and at 5Â K complemented with electroluminescence. At room temperature the CL spectra for defect related emission intensity was enhanced with the electron beam penetration depth. We observed a variation in defect related green emission along the nanorod axis. This indicates a relatively poor structural quality near the interface between ZnO NRs and p-SiC substrate. We associate the green emission with oxygen vacancies. Analysis of the low-temperature (5Â K) emission spectra in the UV region suggests that the synthesized nanorods contain shallow donors and acceptors.
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
N. Bano, I. Hussain, O. Nur, M. Willander, Q. Wahab, A. Henry, H.S. Kwack, D. Le Si Dang,