Electrochromic characterization of amorphous tungsten oxide films deposited on indium tin oxide and CVD-graphene electrodes by RF magnetron sputtering

Dong Soo Choi; Seung Ho Han; Hyeongkeun Kim; Tae Young Kim; Se Hyun Rhyu; Dae Ho Yoon; Woo Seok Yang

Electrochromic characterization of amorphous tungsten oxide films deposited on indium tin oxide and CVD-graphene electrodes by RF magnetron sputtering

Dong Soo Choi
, Seung Ho Han
, Hyeongkeun Kim
, Tae Young Kim
, Se Hyun Rhyu
, Dae Ho Yoon
, Woo Seok Yang

Department of Advanced Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Electrochromism in amorphous tungsten oxide films, lasting and reversible color change to dark blue, is up to injection or withdrawal of electrons. Indium tin oxide (ITO) is widely used as the transparent electrodes for electrochromic devices. We sputtered a-WO_x film on indium tin oxides (ITO) coated flexible polyelthylene terephthalate (PET) substrate. The sheet resistance of ITO/PET is 200 Ohm/sq. To determine optimum condition, we deposited the films under various partial pressures of oxygen and exposure time for adjusting the thickness of the film at room temperature. Optical properties were checked with optical transmittance and Raman spectroscopy of WO₃ film depending on various O₂ pressure. We verified the best condition when WO₃ film was deposited on ITO/PET substrate with 2% O₂ partial pressure and the EC property for graphene /PET application.

Original language	English
Pages (from-to)	273-276
Number of pages	4
Journal	Journal of Ceramic Processing Research
Volume	15
Issue number	4
State	Published - 2014

Keywords

Electrochromic
Flexible
Graphene
ITO
Sputtering
WO

Cite this

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title = "Electrochromic characterization of amorphous tungsten oxide films deposited on indium tin oxide and CVD-graphene electrodes by RF magnetron sputtering",

abstract = "Electrochromism in amorphous tungsten oxide films, lasting and reversible color change to dark blue, is up to injection or withdrawal of electrons. Indium tin oxide (ITO) is widely used as the transparent electrodes for electrochromic devices. We sputtered a-WOx film on indium tin oxides (ITO) coated flexible polyelthylene terephthalate (PET) substrate. The sheet resistance of ITO/PET is 200 Ohm/sq. To determine optimum condition, we deposited the films under various partial pressures of oxygen and exposure time for adjusting the thickness of the film at room temperature. Optical properties were checked with optical transmittance and Raman spectroscopy of WO3 film depending on various O2 pressure. We verified the best condition when WO3 film was deposited on ITO/PET substrate with 2\% O2 partial pressure and the EC property for graphene /PET application.",

keywords = "Electrochromic, Flexible, Graphene, ITO, Sputtering, WO",

author = "Choi, \{Dong Soo\} and Han, \{Seung Ho\} and Hyeongkeun Kim and Kim, \{Tae Young\} and Rhyu, \{Se Hyun\} and Yoon, \{Dae Ho\} and Yang, \{Woo Seok\}",

year = "2014",

language = "English",

volume = "15",

pages = "273--276",

journal = "Journal of Ceramic Processing Research",

issn = "1229-9162",

publisher = "Hanyang University",

number = "4",

}

TY - JOUR

T1 - Electrochromic characterization of amorphous tungsten oxide films deposited on indium tin oxide and CVD-graphene electrodes by RF magnetron sputtering

AU - Choi, Dong Soo

AU - Han, Seung Ho

AU - Kim, Hyeongkeun

AU - Kim, Tae Young

AU - Rhyu, Se Hyun

AU - Yoon, Dae Ho

AU - Yang, Woo Seok

PY - 2014

Y1 - 2014

N2 - Electrochromism in amorphous tungsten oxide films, lasting and reversible color change to dark blue, is up to injection or withdrawal of electrons. Indium tin oxide (ITO) is widely used as the transparent electrodes for electrochromic devices. We sputtered a-WOx film on indium tin oxides (ITO) coated flexible polyelthylene terephthalate (PET) substrate. The sheet resistance of ITO/PET is 200 Ohm/sq. To determine optimum condition, we deposited the films under various partial pressures of oxygen and exposure time for adjusting the thickness of the film at room temperature. Optical properties were checked with optical transmittance and Raman spectroscopy of WO3 film depending on various O2 pressure. We verified the best condition when WO3 film was deposited on ITO/PET substrate with 2% O2 partial pressure and the EC property for graphene /PET application.

AB - Electrochromism in amorphous tungsten oxide films, lasting and reversible color change to dark blue, is up to injection or withdrawal of electrons. Indium tin oxide (ITO) is widely used as the transparent electrodes for electrochromic devices. We sputtered a-WOx film on indium tin oxides (ITO) coated flexible polyelthylene terephthalate (PET) substrate. The sheet resistance of ITO/PET is 200 Ohm/sq. To determine optimum condition, we deposited the films under various partial pressures of oxygen and exposure time for adjusting the thickness of the film at room temperature. Optical properties were checked with optical transmittance and Raman spectroscopy of WO3 film depending on various O2 pressure. We verified the best condition when WO3 film was deposited on ITO/PET substrate with 2% O2 partial pressure and the EC property for graphene /PET application.

KW - Electrochromic

KW - Flexible

KW - Graphene

KW - ITO

KW - Sputtering

KW - WO

UR - https://www.scopus.com/pages/publications/84916228599

M3 - Article

AN - SCOPUS:84916228599

SN - 1229-9162

VL - 15

SP - 273

EP - 276

JO - Journal of Ceramic Processing Research

JF - Journal of Ceramic Processing Research

IS - 4

ER -

Electrochromic characterization of amorphous tungsten oxide films deposited on indium tin oxide and CVD-graphene electrodes by RF magnetron sputtering

Abstract

Keywords

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