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Catalyst-free growth of green-emitting arrayed ZnO nanorods at low temperature

✍ Scribed by Jing Xie; Junying Zhang; Liang Cong; Tianmin Wang; Baibiao Huang

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
646 KB
Volume
151
Category
Article
ISSN
0921-5107

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✦ Synopsis

Green-emitting arrayed ZnO nanorods were fabricated on the ZnO nanoparticulate film by simply refiring the film in the mixture of nitrogen and hydrogen. To generate the arrayed nanorods, the annealing temperature in the air should be above 450 β€’ C, the flow rate of the hydrogen should be higher than 10 mL/min, the re-firing temperature must be controlled in the range from 450 to 550 β€’ C, and the hydrogen should be continually supplied in the process of cooling.

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## Abstract Uniform SnO~2~ nanorod arrays have been deposited at low temperature by plasma‐enhanced chemical vapor deposition (PECVD). ZnO surface modification is used to improve the selectivity of the SnO~2~ nanorod sensor to H~2~ gas. The ZnO‐modified SnO~2~ nanorod sensor shows a normal n‐type r