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説明:

In this study, we developed binder-enhanced reversible photochromic tungsten oxide (WO3) films for advanced applications. Expanding on previous research, we used tungsten oxide hybrid composites as the base material and incorporated various binders, specifically polyethylene glycol (PEG), polysorbate 80 (PS 80), and carboxymethyl cellulose (CMC), to evaluate their effects on reversible photochromic reactions. Our experiments demonstrated that the inclusion of CMC significantly improved the photochromic properties and exhibited the fastest reversible reactions when compared to PEG and polysorbate 80. This enhancement is attributed to the high density of hydroxyl groups and the network structure of CMC, which facilitate efficient proton transfer and oxygen permeability, both crucial for the reoxidation process in WO3. Density functional theory (DFT) calculations supported these findings by indicating that CMC has a suitable bandgap and electron mobility, which enhance charge injection and transport. Additionally, the fabricated films showed consistent and stable performance under both heat treatment and natural ambient conditions. These results underscore the potential of CMC as an effective binder for developing high-performance, reversible photochromic films suitable for applications in smart windows, displays, and optoelectronic devices.

権利情報:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

  © 2024. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/

キーワード: Tungsten oxide hybrid composite, Photochromic film, Reversible reaction, Binders

刊行年月日: 2024-08-25

出版者: Elsevier BV

掲載誌:

• Colloids and Surfaces A: Physicochemical and Engineering Aspects (ISSN: 09277757) vol. 703 135118

研究助成金:

• National Institute for Materials Science
• National Center for Inter-University Research Facilities, Seoul National University
• Ministry of Trade, Industry and Energy 20010838
• Seoul National University
• Ministry of Economy, Trade and Industry

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4945

公開URL: https://doi.org/10.1016/j.colsurfa.2024.135118

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更新時刻: 2024-11-12 14:34:53 +0900

MDRでの公開時刻: 2026-08-25 08:29:26 +0900