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Vortex-assisted layer-by-layer assembly of silver nanowire thin films for flexible and transparent conductive electrodes

Title
Vortex-assisted layer-by-layer assembly of silver nanowire thin films for flexible and transparent conductive electrodes
Author
염봉준
Keywords
Silver nanowire; Layer-by-layer assembly; Vortex; Conductivity; Transparency; Flexible electrode
Issue Date
2017-05
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Citation
JOURNAL OF COLLOID AND INTERFACE SCIENCE, v. 493, page. 371-377
Abstract
Silver nanowires (AgNWs) have drawn much attention as potential candidates to replace conventional transparent conductive materials such as indium tin oxide (ITO). AgNWs have advantages over ITO with respect to cost and ease of fabrication, and can be used in flexible electrodes. However, the preparation of homogeneous films from the AgNW colloidal suspension is still a challenge mainly because of the coagulation and sedimentation of AgNWs in aqueous media. In this study, uniform transparent conductive films were prepared by using AgNWs paired with poly(allylamine hydrochloride) (PAH) via the vortex assisted layer-by-layer (VA-LbL) assembly method. We introduced poly(allylamine hydrochloride) (PAH) to bind the AgNWs to the substrates via coordination bonding. Vortex agitation was also applied during the adsorption of AgNWs to achieve a uniform deposition on the substrate. We systematically examined other experimental conditions such as the concentration of AgNW solution and temperature of the heat treatment to correlate them to the transparency and the conductivity of the films. In addition, AgNW films were prepared on transparent and flexible substrates and these exhibited excellent durability against bending (1000 bending cycles). (C) 2017 Elsevier Inc. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0021979717300577?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/114208
ISSN
0021-9797; 1095-7103
DOI
10.1016/j.jcis.2017.01.048
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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