Evaluating the quantum confinement effect of isolated ZnO nanorod single-quantum-well structures using near-field ultraviolet photoluminescence spectroscopy
SCIE
SCOPUS
- Title
- Evaluating the quantum confinement effect of isolated ZnO nanorod single-quantum-well structures using near-field ultraviolet photoluminescence spectroscopy
- Authors
- Yatsui, T; Ohtsu, M; An, SJ; Yoo, J; Yi, GC
- Date Issued
- 2006-07
- Publisher
- OPTICAL SOC JAPAN
- Abstract
- Using low-temperature near-field spectroscopy, we obtained spatially and spectrally resolved photoluminescence (PL) images of individual ZnO nanorod single-quantum-well structures (SQWs) with a spatial resolution of 20nm. We observed the dependence of the quantum confinement effect of the PL peak on the well width (L-aw), from which the linewidths of near-field PL spectra of ZnO nanorod SQWs (L-aw = 2.5 and 3.75 nm) were determined to be as narrow as 3 meV. However, near-field PL spectra of individual SQWs with L-aw = 5.0 nm exhibited two PL peaks, presumably due to strains or defects in the ZnMgO in the nanorod SQWs. Since the exciton in a quantum structure is an ideal two-level system with long coherence times, our results provide criteria for designing nanophotonic devices. (c) 2006 The Optical Society of Japan.
- Keywords
- ZnO; nanorod; single-quantum-well structures; quantum confinement effect; GROWTH; OPERATION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/23798
- DOI
- 10.1007/s10043-006-0218-z
- ISSN
- 1340-6000
- Article Type
- Article
- Citation
- OPTICAL REVIEW, vol. 13, no. 4, page. 218 - 221, 2006-07
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- There are no files associated with this item.
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