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Electrical conduction and photoresponses of gamma-ray-irradiated single-stranded DNA/single-walled carbon nanotube composite systems
- Authors
- Hong, W.; Lee, E. M.; Kim, D. W.; Lee, Cheol Eui
- Issue Date
- 15-4월-2015
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Single-stranded DNA/single-walled carbon nanotube composite film; Gamma-ray irradiation effect; Charge transport and photoresponses
- Citation
- NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, v.349, pp.103 - 105
- Indexed
- SCIE
SCOPUS
- Journal Title
- NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
- Volume
- 349
- Start Page
- 103
- End Page
- 105
- ISSN
- 0168-583X
- Abstract
- Effects of gamma-ray irradiation on the electrical conductivity and photoresponse have been studied for single-stranded DNA (ssDNA)/single-walled carbon nanotube (SWNT) composite films. The temperature-dependent electrical conductivity of the ssDNA/SWNT composite films, well described by a fluctuation-induced tunneling model, indicated modification of the barrier for thermally activated conduction by the gamma-ray irradiation. Besides, the photoresponse measurements indicated modified photoexcited charge carrier generation and oxygen photodesorption in the composite systems due to the gamma-ray irradiation. (C) 2015 Elsevier B.V. All rights reserved.
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