Low-temperature-cured highly conductive composite of Ag nanowires & polyvinyl alcohol

doi:10.1088/1674-1056/26/7/078103

中国物理B ›› 2017, Vol. 26 ›› Issue (7): 78103-078103.doi: 10.1088/1674-1056/26/7/078103

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

Low-temperature-cured highly conductive composite of Ag nanowires & polyvinyl alcohol

Song He(何松), Xiang Zhang(张祥), Bingchu Yang(杨兵初), Xiaomei Xu(徐晓梅), Hui Chen(陈辉), Conghua Zhou(周聪华)

Hunan Key Laboratory of Super-microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China

收稿日期:2017-02-26 修回日期:2017-03-22 出版日期:2017-07-05 发布日期:2017-07-05
通讯作者: Conghua Zhou E-mail:chzhou@csu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No.61306080),the Natural Science Foundation of Hunan Province,China (Grant No.2015JJ3143),and the Scientific and Technological Project of Hunan Provincial Development and Reform Commission,China.

Low-temperature-cured highly conductive composite of Ag nanowires & polyvinyl alcohol

Song He(何松), Xiang Zhang(张祥), Bingchu Yang(杨兵初), Xiaomei Xu(徐晓梅), Hui Chen(陈辉), Conghua Zhou(周聪华)

Hunan Key Laboratory of Super-microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China

Received:2017-02-26 Revised:2017-03-22 Online:2017-07-05 Published:2017-07-05
Contact: Conghua Zhou E-mail:chzhou@csu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No.61306080),the Natural Science Foundation of Hunan Province,China (Grant No.2015JJ3143),and the Scientific and Technological Project of Hunan Provincial Development and Reform Commission,China.

摘要/Abstract

摘要： Flexible conductive films were fabricated from a low-temperature-cured, highly conductive composite of silver nanowires (as conducting filler) and polyvinyl alcohol (PVA, as binder). Sheet resistance of 0.12 Ω/sq, conductivity of 2.63×10⁴ S/cm, and contact resistance of 1.0 Ω/cm² were measured in the films, along with excellent resistance to scratching and good flexibility, making them suitable electrical contact materials for flexible optoelectronic devices. Effects of curing temperature, curing duration, film thickness, and nanowire length on the film's electrical properties were studied. Due to the abundance of hydroxyl groups on its molecular chains, the addition of PVA improves the film's flexibility and resistance to scratching. Increased nanowire density and nanowire length benefit film conductance. Monte Carlo simulation was used to further explore the impact of these two parameters on the conductivity. It was observed that longer nanowires produce a higher length-ratio of conducting routes in the networks, giving better film conductivity.

关键词: conductive composite, polyvinyl alcohol, silver nanowires, Monte Carlo simulation

Abstract: Flexible conductive films were fabricated from a low-temperature-cured, highly conductive composite of silver nanowires (as conducting filler) and polyvinyl alcohol (PVA, as binder). Sheet resistance of 0.12 Ω/sq, conductivity of 2.63×10⁴ S/cm, and contact resistance of 1.0 Ω/cm² were measured in the films, along with excellent resistance to scratching and good flexibility, making them suitable electrical contact materials for flexible optoelectronic devices. Effects of curing temperature, curing duration, film thickness, and nanowire length on the film's electrical properties were studied. Due to the abundance of hydroxyl groups on its molecular chains, the addition of PVA improves the film's flexibility and resistance to scratching. Increased nanowire density and nanowire length benefit film conductance. Monte Carlo simulation was used to further explore the impact of these two parameters on the conductivity. It was observed that longer nanowires produce a higher length-ratio of conducting routes in the networks, giving better film conductivity.

Key words: conductive composite, polyvinyl alcohol, silver nanowires, Monte Carlo simulation

中图分类号: (Chemical synthesis methods)

81.16.Be

78.67.-n (Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures) 81.15.-z (Methods of deposition of films and coatings; film growth and epitaxy) 78.67.Uh (Nanowires)

何松, 张祥, 杨兵初, 徐晓梅, 陈辉, 周聪华. Low-temperature-cured highly conductive composite of Ag nanowires & polyvinyl alcohol[J]. 中国物理B, 2017, 26(7): 78103-078103.

Song He(何松), Xiang Zhang(张祥), Bingchu Yang(杨兵初), Xiaomei Xu(徐晓梅), Hui Chen(陈辉), Conghua Zhou(周聪华). Low-temperature-cured highly conductive composite of Ag nanowires & polyvinyl alcohol[J]. Chin. Phys. B, 2017, 26(7): 78103-078103.

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Low-temperature-cured highly conductive composite of Ag nanowires & polyvinyl alcohol

Low-temperature-cured highly conductive composite of Ag nanowires & polyvinyl alcohol

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