PEDOT:PSS Nanofilms Fabricated by a Nonconventional Coating Method for Uses as Transparent Conducting Electrodes in Flexible Electrochromic Devices

Nanofilms of a polymer mixer of two ionomers, poly 3,4-ethylenedioxythiophene:poly(styrene sulfonic acid) (PEDOT:PSS), were used as conducting materials to develop transparent conducting electrodes. It was firstly found that convective deposition, a versatile and wide-area coating method, could be used for the coating and acid treatment of PEDOT:PSS films. Electrical conductivity of the PEDOT:PSS films was significantly enhanced up to 1814 S/cm by only one-time surface treatment by a mild acid solution (4 M methanesulfonic acid). This is because some PSS chains were removed out from the polymer mixer films without damage on the substrates. UV-vis-NIR spectroscopy, Raman spectroscopy, and cyclic voltammetry were used to characterize the acid-treated transparent conducting films. In this report, obtained transparent conducting PEDOT:PSS films on polyester substrates were used as flexible electrodes for fabrication of flexible electrochromic devices. Poly(3-hexylthiophene) (P3HT) was used as an active layer, which its color changed reversibly from transparent-light blue to purple with a small applied voltage (±3 V).

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Simultaneous Enhancement of Electrical and Optical Properties of Transparent Conducting RuO2 Nanosheet films by Facile Ultraviolet-Ozone Irradiation

Applied Sciences ◽

10.3390/app10124127 ◽

2020 ◽

Vol 10 (12) ◽

pp. 4127

Author(s):

Jong Wook Roh ◽

Weon Ho Shin ◽

Hyun-Sik Kim ◽

Se Yun Kim ◽

Sang-il Kim

Keyword(s):

Optical Properties ◽

Electronic Devices ◽

Optical Transmittance ◽

Electrical And Optical Properties ◽

Langmuir Blodgett ◽

Transparent Conducting Films ◽

Transparent Conducting ◽

Chemical Exfoliation ◽

Simple Chemical ◽

Transparent Conducting Electrodes

The enhancement of electrical and optical properties in transparent conducting electrodes has attracted significant interest for their application in flexible electronic devices. Herein, a method for the fabrication of transparent conducting films is proposed. In this approach, RuO2 nanosheets are synthesized by a simple chemical exfoliation method and deposited as conducting films by repeated Langmuir–Blodgett coating. For enhancing the electrical and optical properties of the films, ultraviolet-ozone irradiation is applied between the repeated coatings for the removal of residual organic materials from the chemically exfoliated nanosheets. We observe that by applying ultraviolet-ozone irradiation for 30 min, the sheet resistance of the films decreases by 10% and the optical transmittance is simultaneously enhanced. Facile ultraviolet-ozone irradiation is shown to be an effective and industrially friendly method for enhancing the electrical and optical properties of oxide nanosheets for their application as transparent conduction electrodes.

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Optimisation of carbon nanotube ink for large-area transparent conducting films fabricated by controllable rod-coating method

Carbon ◽

10.1016/j.carbon.2013.12.078 ◽

2014 ◽

Vol 70 ◽

pp. 103-110 ◽

Cited By ~ 33

Author(s):

Yan Meng ◽

Xiao-Bing Xu ◽

Hu Li ◽

Yan Wang ◽

Er-Xiong Ding ◽

...

Keyword(s):

Carbon Nanotube ◽

Large Area ◽

Transparent Conducting Films ◽

Transparent Conducting ◽

Coating Method ◽

Carbon Nanotube Ink

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Transparent Conducting Electrodes for Optoelectronic Devices: State-of-the-art and Perspectives

Materials Research Foundations - Materials for Solar Cell Technologies II ◽

10.21741/9781644901410-4 ◽

2021 ◽

pp. 77-113

Author(s):

A. Ray

Keyword(s):

State Of The Art ◽

Transparent Conductors ◽

Large Area ◽

Conducting Oxides ◽

Road Map ◽

Transparent Conducting ◽

Conducting Materials ◽

Transparent Conducting Materials ◽

Transparent Conducting Electrodes ◽

Near Future

This chapter brings a concise review of the transparent conducting materials, films and electrodes (TCM, TCF and TCE, respectively), its state-of-the-art and outlooks ahead. Initial part of the chapter gives a general introduction of the topic, followed by a feasible road map as proposed and collated by the authors based on several other reviews. Fundamental physics behind the transparent conductors is discussed in the latter part. Established and potential oxide based TCMs, namely the transparent conducting oxides (TCOs) are reviewed which are being used commercially and will see application in the near future. Non-conventional TCMs, which are mostly non-TCOs, such as graphene, carbon nanotubes (CNT), metallic nanowires (MNWs) and their hybrids are described in brief. Scalability and large area fabrication which are most important concerns for commercialization of TCMs are discussed. The general prospects are given at the end.

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Enhanced adhesion of Ag nanowire based transparent conducting electrodes for application in flexible electrochromic devices

Optical Materials ◽

10.1016/j.optmat.2021.111414 ◽

2021 ◽

Vol 120 ◽

pp. 111414

Author(s):

Shihui Yu ◽

Xinyue Ma ◽

Xiaopeng Li ◽

Junjun Li ◽

Baoming Gong ◽

...

Keyword(s):

Electrochromic Devices ◽

Transparent Conducting ◽

Transparent Conducting Electrodes ◽

Ag Nanowire

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Preparation, Electronic Structure and Optical Properties of the Electrochromic Thin Films

Nonlinear Analysis Modelling and Control ◽

10.15388/na.2004.9.4.15150 ◽

2004 ◽

Vol 9 (4) ◽

pp. 363-372 ◽

Cited By ~ 2

Author(s):

T. Lukaszewicz ◽

A. Ravinski ◽

I. Makoed

Keyword(s):

Electrochromic Device ◽

Orbital Method ◽

Optical Parameters ◽

Full Potential ◽

Electrochromic Devices ◽

Energy Bands ◽

Conducting Film ◽

Recombination Probability ◽

Transparent Conducting ◽

Smoluchowski Equations

A new multilayer electrochromic device has been constructed according to the following pattern: glass1/ITO/WO3/gel electrolyte/BP/ITO/glass2, where ITO is a transparent conducting film made of indium and tin oxide and with the surface resistance equal 8–10 Ω/cm2 . The electrochromic devices obtained in the research are characterized by great (considerable) transmittance variation between coloration and bleaching state (25–40% at applied voltage of 1.5 to 3 V), and also high coloration efficiency (above 100 cm2 /C). Selfconsistent energy bands, dielectric permittivity and optical parameters are calculated using a full-potential linear muffin-tin orbital method. The numerical solution of the Debye-Smoluchowski equations is developed for simulating recombination probability of Li+ ions in amorphous electrolyte.

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