Operation mechanism investigation of electrochromic display devices using tungsten oxides based on solid-state metal-oxide-metal capacitor structures

Chin Pao Cheng; Yi Kuo; Chun Hu Cheng; Zhi Wei Zheng

doi:10.1016/j.sse.2014.05.001

Operation mechanism investigation of electrochromic display devices using tungsten oxides based on solid-state metal-oxide-metal capacitor structures

Chin Pao Cheng^*, Yi Kuo, Chun Hu Cheng, Zhi Wei Zheng

^*Corresponding author for this work

Department of Mechatronic Engineering

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

6 Citations (Scopus)

Abstract

In this work, we investigate the electrochromic effect of WO₃ electrochromic display device and operation mechanism based on a solid-state TaN/WO₃/ITO metal-oxide-metal capacitor. The electrochromic switching mechanism correlated with the oxygen vacancy concentration was proposed and well-predicted. The experimental results reveal that electrochromic device using electrodeposited WO₃ without post annealing exhibits the much better coloration and bleach process than those of annealed sample. The cycling test of WO₃ metal-oxide-metal capacitor also demonstrates that the degradations of current/voltage distributions are mainly originated from randomly distributed connected paths consisting of oxygen vacancies. Thus, oxygen vacancies formed during WO₃ electrodeposition process or post film annealing need to be well controlled.

Original language	English
Pages (from-to)	16-20
Number of pages	5
Journal	Solid-State Electronics
Volume	99
DOIs	https://doi.org/10.1016/j.sse.2014.05.001
Publication status	Published - 2014 Sept

Keywords

Electrochromic
Oxygen vacancy
Redox

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering
Materials Chemistry

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10.1016/j.sse.2014.05.001

Cite this

@article{480e1468324c4d158c5dae8644357ed7,

title = "Operation mechanism investigation of electrochromic display devices using tungsten oxides based on solid-state metal-oxide-metal capacitor structures",

abstract = "In this work, we investigate the electrochromic effect of WO3 electrochromic display device and operation mechanism based on a solid-state TaN/WO3/ITO metal-oxide-metal capacitor. The electrochromic switching mechanism correlated with the oxygen vacancy concentration was proposed and well-predicted. The experimental results reveal that electrochromic device using electrodeposited WO3 without post annealing exhibits the much better coloration and bleach process than those of annealed sample. The cycling test of WO3 metal-oxide-metal capacitor also demonstrates that the degradations of current/voltage distributions are mainly originated from randomly distributed connected paths consisting of oxygen vacancies. Thus, oxygen vacancies formed during WO3 electrodeposition process or post film annealing need to be well controlled.",

keywords = "Electrochromic, Oxygen vacancy, Redox",

author = "Cheng, {Chin Pao} and Yi Kuo and Cheng, {Chun Hu} and Zheng, {Zhi Wei}",

note = "Funding Information: This work was supported by the National Science Council (NSC) of Taiwan, Republic of China, under contract No. NSC 102-2221-E-003-006 .",

year = "2014",

month = sep,

doi = "10.1016/j.sse.2014.05.001",

language = "English",

volume = "99",

pages = "16--20",

journal = "Solid-State Electronics",

issn = "0038-1101",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Operation mechanism investigation of electrochromic display devices using tungsten oxides based on solid-state metal-oxide-metal capacitor structures

AU - Cheng, Chin Pao

AU - Kuo, Yi

AU - Cheng, Chun Hu

AU - Zheng, Zhi Wei

N1 - Funding Information: This work was supported by the National Science Council (NSC) of Taiwan, Republic of China, under contract No. NSC 102-2221-E-003-006 .

PY - 2014/9

Y1 - 2014/9

N2 - In this work, we investigate the electrochromic effect of WO3 electrochromic display device and operation mechanism based on a solid-state TaN/WO3/ITO metal-oxide-metal capacitor. The electrochromic switching mechanism correlated with the oxygen vacancy concentration was proposed and well-predicted. The experimental results reveal that electrochromic device using electrodeposited WO3 without post annealing exhibits the much better coloration and bleach process than those of annealed sample. The cycling test of WO3 metal-oxide-metal capacitor also demonstrates that the degradations of current/voltage distributions are mainly originated from randomly distributed connected paths consisting of oxygen vacancies. Thus, oxygen vacancies formed during WO3 electrodeposition process or post film annealing need to be well controlled.

AB - In this work, we investigate the electrochromic effect of WO3 electrochromic display device and operation mechanism based on a solid-state TaN/WO3/ITO metal-oxide-metal capacitor. The electrochromic switching mechanism correlated with the oxygen vacancy concentration was proposed and well-predicted. The experimental results reveal that electrochromic device using electrodeposited WO3 without post annealing exhibits the much better coloration and bleach process than those of annealed sample. The cycling test of WO3 metal-oxide-metal capacitor also demonstrates that the degradations of current/voltage distributions are mainly originated from randomly distributed connected paths consisting of oxygen vacancies. Thus, oxygen vacancies formed during WO3 electrodeposition process or post film annealing need to be well controlled.

KW - Electrochromic

KW - Oxygen vacancy

KW - Redox

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JO - Solid-State Electronics

JF - Solid-State Electronics

ER -

Operation mechanism investigation of electrochromic display devices using tungsten oxides based on solid-state metal-oxide-metal capacitor structures

Abstract

Keywords

ASJC Scopus subject areas

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