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

页码：103 / 105

页数：3