Morphology-controlled one-dimensional ZnO nanostructures with customized Ga-doping

Title
Morphology-controlled one-dimensional ZnO nanostructures with customized Ga-doping
Authors
송용원이상렬
Keywords
ZnO; Ga-dopig; nanostructure; ZnO nanowires; Ga-doped ZnO; Customized doping; Morphology control; Hot-walled PLD
Issue Date
2009-12
Publisher
Thin solid films
Citation
VOL 518, NO 4, 1323-1325
Abstract
Enhanced functionality of the nanostructure-based devices can be achieved by customizing the doping, thereby managing the electrical properties of the nanostructures.We have optimized the synthesis condition of the ZnO nanowires (NWs) using hot-walled pulsed laser deposition (HW-PLD) that features the facilitated kinetic energy control of the laser-ablated particles. The electrical properties of the NWs have been managed by doping control while maintaining the NW morphologies. 1, 3, and 5 wt.% Ga concentration in the NWs is evaluated directly with energy dispersive spectrometer (EDS), and the exciton peak shifts are measured with room temperature photoluminescence (PL) to find the correlation between the concentration and the shifts. n-type Ga-doping status has been verified with low temperature PL to find the donor-bound exciton peaks. As for the morphology diversification, we have acquired both zigzag-shaped NWs and nanohorns using the same HW-PLD.
URI
http://pubs.kist.re.kr/handle/201004/36389
ISSN
0040-6090
Appears in Collections:
KIST Publication > Article
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