Fabrication of transparent conductive tri-composite film for electrochromic application

Title
Fabrication of transparent conductive tri-composite film for electrochromic application
Author
이선영
Keywords
Dry deposition; Electrochromic (EC) device; PEDOT:PSS; TiO2; Transparent conductive electrode (TCE)
Issue Date
2017-12
Publisher
ELSEVIER SCIENCE BV
Citation
APPLIED SURFACE SCIENCE, v. 425, Page. 1006-1013
Abstract
A transparent conductive electrode (TCE) based on poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) was developed using a dry deposition method for application as an electrochromic (EC) device. To improve its electrical conductivity and stable EC performance, AgNW and TiO2 nanoparticles were included in the TCE film. The resulting TiO2/AgNW/PEDOT: PSS hybrid film showed electrical sheet resistivity of 23 Omega/sq., similar to that of a commercial TCE film. When +2.0 V was applied to the hybrid film, the response current was stable, maintaining a value of 2.0 mA. We found that the hybrid film could be used as an EC device, without using commercial TCE film. Antimony-doped tin oxide on indium-doped tin oxide-glass as an ion-storage layer was combined with the hybrid film, with 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide (EMIM-TFSI) injected into the EC device as an ionic liquid electrolyte. The optical transmittance difference between the colored and bleached states was 23% at 630 nm; under applied voltages of -2.0 V and +2.0 V, the coloration efficiency was 127.83cm(2)/C. Moreover, cyclic transmittance with switching voltage for 3 h showed stable optical transmittance of 31% at 630 nm. Cyclic voltammetry measurements indicated stable behavior over 50 cycles. Thus, the proposed TCE configuration (TiO2/AgNW/PEDOT: PSS) shows great potential as a substitute for commercial TCEs, the cost of which depends on the availability of rare-earth materials. (C) 2017 Elsevier B.V. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0169433217320664http://repository.hanyang.ac.kr/handle/20.500.11754/72718
ISSN
0169-4332; 1873-5584
DOI
10.1016/j.apsusc.2017.07.076
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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