Electrical conduction and photoresponses of gamma-ray-irradiated single-stranded DNA/single-walled carbon nanotube composite systems

被引：1
|
作者：
Hong, W. [1 ]
Lee, E. M. [1 ]
Kim, D. W. [1 ]
Lee, Cheol Eui [1 ]
机构：
[1] Korea Univ, Dept Phys, Seoul 136701, South Korea
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2015年 / 349卷
基金：
新加坡国家研究基金会;
关键词：
Single-stranded DNA/single-walled carbon nanotube composite film; Gamma-ray irradiation effect; Charge transport and photoresponses; TEMPERATURE-DEPENDENCE;
D O I：
10.1016/j.nimb.2015.02.038
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
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.
引用
收藏
页码：103 / 105
页数：3
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