期刊
THIN SOLID FILMS
卷 572, 期 -, 页码 68-72出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2014.08.015
关键词
Carbon nanotubes; PEDOT:PSS polymers; Sheet resistance; Visible transmittance; Chromaticity properties; Hybrid-type transparent electrodes; Touch screen panels
类别
资金
- National Research Foundation of Korea - Ministry of Education
- National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology (MEST) [2012008365]
This study demonstrates hybrid-type transparent electrodes based on carbon nanotubes (CNTs) that possess characteristics desirable for touch screen panels. This has been accomplished by depositing CNTs via spray-coating and then depositing thin conductive polymer (such as PEDOT:PSS) films on the CNTs via spin-coating. For all of the samples such as CNTs, PEDOT: PSS, and hybrid (i.e., PEDOT:PSS-coated CNTs), their surface morphologies, sheet resistances, visible transmittances, and chromatic properties are characterized as functions of their preparation conditions. In the PEDOT:PSS-coated CNTs, the PEDOT:PSS particles fill up the voids between tubes in CNTs, forming a conduction bridge for electron transfer and eventually decreasing the sheet resistance of the hybrid electrode. Also, the hybrid electrode reveals a superior color property compared with that of CNTs or the PEDOT:PSS single electrode due to the complementary color relation between CNTs and PEDOT:PSS. Experimental results show that the fabricated hybrid-type electrodes can simultaneously satisfy the requirements necessary for transparent electrodes of touch screen panels such as the sheet resistance requiring to be lower than 100 O/sq, visible transmittance higher than 80%, and yellowness approaching to zero. (C) 2014 Elsevier B.V. All rights reserved.
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