One-pot sequential electrochemical deposition of multilayer poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonic acid)/tungsten trioxide hybrid films and their enhanced electrochromic properties

Hybrid thin films composed of multilayer poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonic acid) (PEDOT:PSS) and tungsten trioxide (WO3) were electrochemically deposited on indium tin oxide (ITO) from a one-pot solution using a square-wave galvanostatic method. The morphology of the hybrid thi...

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Main Authors: Ling, Han, Lu, Jinlin, Phua, Silei, Liu, Hai, Liu, Liang, Huang, Yizhong, Mandler, Daniel, Lee, Pooi See, Lu, Xuehong
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2016
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Online Access:https://hdl.handle.net/10356/81877
http://hdl.handle.net/10220/39701
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-818772020-09-26T22:17:05Z One-pot sequential electrochemical deposition of multilayer poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonic acid)/tungsten trioxide hybrid films and their enhanced electrochromic properties Ling, Han Lu, Jinlin Phua, Silei Liu, Hai Liu, Liang Huang, Yizhong Mandler, Daniel Lee, Pooi See Lu, Xuehong School of Materials Science & Engineering Temasek Laboratories Electrochemical deposition Multilayers Hybrid thin films composed of multilayer poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonic acid) (PEDOT:PSS) and tungsten trioxide (WO3) were electrochemically deposited on indium tin oxide (ITO) from a one-pot solution using a square-wave galvanostatic method. The morphology of the hybrid thin films could be easily manipulated to optimize their electrochromic properties by adjusting deposition conditions. In the hybrids, both components can be simultaneously switched to coloured or bleached states. The hybrid film obtained with very short deposition times of PEDOT:PSS and WO3 in each cycle exhibits significantly enhanced electrochromic properties. The optical contrast of the hybrid film is higher than that of PEDOT:PSS or WO3 films of the same thickness. Moreover, the stability of the hybrid film is also drastically enhanced. The enhancement may be attributed to the favourable interactions between the two components, i.e., PEDOT:PSS may enter the defect sites in electrodeposited WO3, preventing surface-defect-induced anodic dissolution during cycling, while the surface functional groups of WO3 may act as dopants to inhibit over-oxidation of PEDOT, as well as the large interfacial area created using this unique one-pot multilayer deposition method. ASTAR (Agency for Sci., Tech. and Research, S’pore) Accepted version 2016-01-13T08:43:40Z 2019-12-06T14:42:09Z 2016-01-13T08:43:40Z 2019-12-06T14:42:09Z 2014 Journal Article Ling, H., Lu, J., Phua, S., Liu, H., Liu, L., Huang, Y., et al. (2014). One-pot sequential electrochemical deposition of multilayer poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonic acid)/tungsten trioxide hybrid films and their enhanced electrochromic properties. Journal of Materials Chemistry A, 2(8), 2708-2717. 2050-7488 https://hdl.handle.net/10356/81877 http://hdl.handle.net/10220/39701 10.1039/c3ta14781a en Journal of Materials Chemistry A © 2014 The Royal Society of Chemistry. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Materials Chemistry A, The Royal Society of Chemistry. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1039/c3ta14781a]. 24 p. application/pdf application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Electrochemical deposition
Multilayers
spellingShingle Electrochemical deposition
Multilayers
Ling, Han
Lu, Jinlin
Phua, Silei
Liu, Hai
Liu, Liang
Huang, Yizhong
Mandler, Daniel
Lee, Pooi See
Lu, Xuehong
One-pot sequential electrochemical deposition of multilayer poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonic acid)/tungsten trioxide hybrid films and their enhanced electrochromic properties
description Hybrid thin films composed of multilayer poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonic acid) (PEDOT:PSS) and tungsten trioxide (WO3) were electrochemically deposited on indium tin oxide (ITO) from a one-pot solution using a square-wave galvanostatic method. The morphology of the hybrid thin films could be easily manipulated to optimize their electrochromic properties by adjusting deposition conditions. In the hybrids, both components can be simultaneously switched to coloured or bleached states. The hybrid film obtained with very short deposition times of PEDOT:PSS and WO3 in each cycle exhibits significantly enhanced electrochromic properties. The optical contrast of the hybrid film is higher than that of PEDOT:PSS or WO3 films of the same thickness. Moreover, the stability of the hybrid film is also drastically enhanced. The enhancement may be attributed to the favourable interactions between the two components, i.e., PEDOT:PSS may enter the defect sites in electrodeposited WO3, preventing surface-defect-induced anodic dissolution during cycling, while the surface functional groups of WO3 may act as dopants to inhibit over-oxidation of PEDOT, as well as the large interfacial area created using this unique one-pot multilayer deposition method.
author2 School of Materials Science & Engineering
author_facet School of Materials Science & Engineering
Ling, Han
Lu, Jinlin
Phua, Silei
Liu, Hai
Liu, Liang
Huang, Yizhong
Mandler, Daniel
Lee, Pooi See
Lu, Xuehong
format Article
author Ling, Han
Lu, Jinlin
Phua, Silei
Liu, Hai
Liu, Liang
Huang, Yizhong
Mandler, Daniel
Lee, Pooi See
Lu, Xuehong
author_sort Ling, Han
title One-pot sequential electrochemical deposition of multilayer poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonic acid)/tungsten trioxide hybrid films and their enhanced electrochromic properties
title_short One-pot sequential electrochemical deposition of multilayer poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonic acid)/tungsten trioxide hybrid films and their enhanced electrochromic properties
title_full One-pot sequential electrochemical deposition of multilayer poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonic acid)/tungsten trioxide hybrid films and their enhanced electrochromic properties
title_fullStr One-pot sequential electrochemical deposition of multilayer poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonic acid)/tungsten trioxide hybrid films and their enhanced electrochromic properties
title_full_unstemmed One-pot sequential electrochemical deposition of multilayer poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonic acid)/tungsten trioxide hybrid films and their enhanced electrochromic properties
title_sort one-pot sequential electrochemical deposition of multilayer poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonic acid)/tungsten trioxide hybrid films and their enhanced electrochromic properties
publishDate 2016
url https://hdl.handle.net/10356/81877
http://hdl.handle.net/10220/39701
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