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Electrochromic WO3 ...
Electrochromic WO3 thin films attain unprecedented durability by potentiostatic pretreatment
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- Arvizu, Miguel A (author)
- Uppsala universitet,Fasta tillståndets fysik
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- Qu, Hui-Ying (author)
- Uppsala universitet,Fasta tillståndets fysik,Harbin Inst Technol, Sch Chem & Chem Engn, MIIT Key Lab Crit Mat Technol New Energy Convers, Harbin 150001, Heilongjiang, Peoples R China
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- Cindemir, Umut, 1986- (author)
- Uppsala universitet,Fasta tillståndets fysik
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- Qiu, Zhen (author)
- Uppsala universitet,Fasta tillståndets fysik
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- Rojas González, Edgar Alonso (author)
- Uppsala universitet,Fasta tillståndets fysik
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- Primetzhofer, Daniel (author)
- Uppsala universitet,Tillämpad kärnfysik
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- Granqvist, Claes Göran, 1946- (author)
- Uppsala universitet,Fasta tillståndets fysik
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- Österlund, Lars, 1967- (author)
- Uppsala universitet,Fasta tillståndets fysik
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- Niklasson, Gunnar, 1953- (author)
- Uppsala universitet,Fasta tillståndets fysik
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(creator_code:org_t)
- 2019
- 2019
- English.
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In: Journal of Materials Chemistry A. - : ROYAL SOC CHEMISTRY. - 2050-7488 .- 2050-7496. ; 7:6, s. 2908-2918
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Abstract
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- Electrochromic windows and glass facades are able to impart energy efficiency jointly with indoor comfort and convenience. Long-term durability is essential for practical implementation of this technology and has recently attracted broad interest. Here we show that a simple potentiostatic pretreatment of sputterdeposited thin films of amorphous WO3-the most widely studied electrochromic material-can yield unprecedented durability for charge exchange and optical modulation under harsh electrochemical cycling in a Li-ion-conducting electrolyte and effectively evades harmful trapping of Li. The pretreatment consisted of applying a voltage of 6.0 V vs. Li/Li+ for several hours to a film backed by a transparent conducting In2O3: Sn layer. Associated compositional and structural modifications were probed by several techniques, and improved durability was associated with elemental intermixing at the WO3/ITO and ITO/glass boundaries as well as with carbonaceous solid-electrolyte interfacial layers on the WO3 films. Our work provides important new insights into long-term durability of ion-exchange-based devices.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Arvizu, Miguel A
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Qu, Hui-Ying
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Cindemir, Umut, ...
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Qiu, Zhen
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Rojas González, ...
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Primetzhofer, Da ...
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Granqvist, Claes ...
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Österlund, Lars, ...
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Niklasson, Gunna ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
- Articles in the publication
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Journal of Mater ...
- By the university
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Uppsala University