Methodology for measuring current distribution effects in electrochromic smart windows
2011 (English)In: Applied Optics, ISSN 1559-128X, E-ISSN 2155-3165, Vol. 50, no 29, 5639-5646 p.Article in journal (Refereed) Published
Electrochromic (EC) devices for use as smart windows have a large energy-saving potential when used in the construction and transport industries. When upscaling EC devices to window size, a well-known challenge is to design the EC device with a rapid and uniform switching between colored (charged) and bleached (discharged) states. A well-defined current distribution model, validated with experimental data, is a suitable tool for optimizing the electrical system design for rapid and uniform switching. This paper introduces a methodology, based on camera vision, for experimentally validating EC current distribution models. The key is the methodology's capability to both measure and simulate current distribution effects as transmittance distribution. This paper also includes simple models for coloring (charging) and bleaching (discharging), taking into account secondary current distribution with charge transfer resistance and ohmic effects. Some window-size model predictions are included to show the potential for using a validated EC current distribution model as a design tool.
Place, publisher, year, edition, pages
2011. Vol. 50, no 29, 5639-5646 p.
Bleaching, Charge transfer, Cleaning, Design, Electrochromic devices, Electrochromism, Systems analysis
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-47978DOI: 10.1364/AO.50.005639ISI: 000296066600005ScopusID: 2-s2.0-80053918306OAI: oai:DiVA.org:kth-47978DiVA: diva2:457175
FunderSwedish Research CouncilStandUp
QC 201507162011-11-172011-11-152015-07-16Bibliographically approved