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Jeong, Hu Young
UNIST Central Research Facilities (UCRF)
Research Interests
  • Soft material characterization such as graphene using a low kV Cs-corrected TEM

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Flexible room-temperature NO2 gas sensors based on carbon nanotubes/reduced graphene hybrid films

Cited 78 times inthomson ciCited 61 times inthomson ci
Title
Flexible room-temperature NO2 gas sensors based on carbon nanotubes/reduced graphene hybrid films
Author
Jeong, Hu YoungLee, Dae-SikChoi, Hong KywLee, Duck HyunKim, Ji-EunLee, Jeong YongLee, Won JongKim, Sang OukChoi, Sung-Yool
Keywords
Bending stress; Enhanced sensitivity; Film surfaces; Gas sensors; High sensitivity; Hybrid film; Polyimide substrate; Room temperature; Sensing performance; Sensor response; Vertically aligned CNT arrays
Issue Date
201005
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.96, no.21, pp. -
Abstract
We present a flexible room temperature NO2 gas sensor consisting of vertical carbon nanotubes (CNTs)/reduced graphene hybrid film supported by a polyimide substrate. The reduced graphene film alone showed a negligible sensor response, exhibiting abnormal N-P transitions during the initial NO2 injection. A hybrid film, formed by the growth of a vertically aligned CNT array (with CNTs 20 μm in length) on the reduced graphene film surface, exhibited remarkably enhanced sensitivities with weak N-P transitions. The increase in sensitivity was mainly attributed to the high sensitivity of the CNT arrays. The outstanding flexibility of the reduced graphene films ensured stable sensing performances in devices submitted to extreme bending stress.
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DOI
http://dx.doi.org/10.1063/1.3432446
ISSN
0003-6951
Appears in Collections:
UCRF_Journal Papers
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