Please use this identifier to cite or link to this item: doi:10.22028/D291-24547
Title: Development of electrochromic smart windows by sol-gel techniques
Author(s): Munro, Brian
Krämer, Stefanie
Zapp, Patrick
Krug, Herbert
Schmidt, Helmut K.
Language: English
Year of Publication: 1997
OPUS Source: Sol-gel optics IV : 30 July-1 August 1997, San Diego, California / Bruce S. Dunn ... [et al.], chairs/editors. - Bellingham, Wash. : SPIE, c1997. - (SPIE proceedings series ; 3136), S. 470-479
SWD key words: Sol-Gel-Verfahren
DDC notations: 620 Engineering and machine engineering
Publikation type: Conference Paper
Abstract: A novel nanocomposite lithium ion-conducting electrolyte has been developed, based on organically modified silanes, which is suitable for application in a sol-gel electrochromic system. The system developed consists of FTO-coated (Fluorine doped Tin Oxide) glass coated with tungsten oxide, WO3, at one side of the device as the electrochromic layer, with a cerium oxide-titanium oxide layer, CeO2-TiO2, acting as ion-storage layer or counter electrode. The adhesive properties of the electrolyte enabled the manufacture of electrochromic devices in a laminated structure: glassFTOWO3 anocomp.elect.CeO2-TiO2FTOglass. The conductivity of the nanocomposite electrolyte system varies between 10-4 and 10-5 Scm-1 at 25°C depending on the exact composition. The temperature dependence of the conductivity exhibits typical Vogel-Tamman-Fulcher (VTF) behaviour. The thickness of the electrolyte between the two halves of the device could be adjusted by the use of a spacer technique in the range 10 - 150 µm. Optoelectrochemical measurements were conducted on electrochromic devices to study the kinetics of colouration and bleaching as a function of the number of switching cycles. At present, cells are constructed in two formats:10 X 15 cm2 and 35 X 35 cm2. Switching times under one minute were achieved for the smaller format with a corresponding optical modulation between 75% to 20% (at λ = 0.633 µm). In the case of the larger format the switching time increases to several minutes due to the increase in geometric area.
Link to this record: urn:nbn:de:bsz:291-scidok-28513
ISBN: 0-8194-2558-3
Date of registration: 6-May-2010
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
SciDok - Der Wissenschaftsserver der Universität des Saarlandes

Files for this record:
File Description SizeFormat 
sm199722.pdf1,29 MBAdobe PDFView/Open

Items in SciDok are protected by copyright, with all rights reserved, unless otherwise indicated.