Electrochromic foil-based devices: Optical transmittance and modulation range, effect of ultraviolet irradiation, and quality assessment by 1/f current noise
| Autor: | Emma Jonson, Greger Gustavsson, C. G. Granqvist, Richard Karmhag, Laszlo B. Kish, Peter Georén, Gunnar A. Niklasson, Sara Green, Janusz Smulko, Andris Azens, Roser Marsal, Zareh Topalian, Arne Roos |
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| Rok vydání: | 2008 |
| Předmět: |
Materials science
business.industry Metals and Alloys Surfaces and Interfaces Dip-coating Noise (electronics) Surfaces Coatings and Films Electronic Optical and Magnetic Materials Surface coating Optics Electrochromism Physical vapor deposition Materials Chemistry Transmittance Thin film business Visible spectrum |
| Zdroj: | Thin Solid Films. 516:5921-5926 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/j.tsf.2007.10.074 |
| Popis: | We introduce electrochromic (EC) technology for modulating the transmittance of visible light and solar radiation in window apertures, with focus on recent work on foil-type devices embodying sputter deposited WO3 and NiO films joined by a polymer electrolyte. The purpose of this paper is to present a number of new and preliminary results showing that (i) double-sided antireflection coatings based on dip coating can enhance the transmittance significantly, (ii) tandem foils can yield a ratio between bleached-state and colored-state transmittance exceeding fifty, (iii) solar irradiance onto the EC device can enhance its charge insertion dynamics and thereby its optical modulation, and (iv) electromagnetic noise spectroscopy may serve as quality assessment of EC devices. |
| Databáze: | OpenAIRE |
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