Please use this identifier to cite or link to this item: doi:10.22028/D291-24200
Title: Grey, brown and blue coloring sol-gel electrochromic devices
Author(s): Heusing, Sabine
Sun, Donglan L.
Otero-Anaya, J.
Aegerter, Michel A.
Language: English
Year of Publication: 2006
OPUS Source: Thin solid films. - 502. 2006, 1-2, S. 240-245
SWD key words: Elektrochromie
DDC notations: 620 Engineering and machine engineering
Publikation type: Journal Article
Abstract: Pure and doped niobium oxide (Nb2O5) layers are electrochromic (EC) materials which change their colour by insertion of Li+ ions from transparent to brown, grey or blue depending on the crystallinity of the layer. EC-devices with the configuration K-glass / EC-layer / composite electrolyte / Ion-storage (IS) layer / K-glass, were produced using different Nb2O5 EC-layers, a (CeO2)x(TiO2)1-x (x=0.45) IS-layer and an inorganic-organic composite electrolyte to which a small amount of water (up to 3 wt%) was added. The grey coloring all-solid-state sol-gel devices fabricated with Nb2O5:Mo coatings show a high reversible colouration (DeltaOD = 0.3) and a longterm stability of more than 55000 switching cycles. Large area EC-devices (30 cm x 40 cm) show a transmittance change between 60% and 25% at 550 nm after galvanostatic colouration and bleaching for 3 min and a colouration efficiency of 27 cm²/C. The results obtained with blue and brown colouring Nb2O5 EC-layers and a comparison with blue coloring WO3 layers are also presented.
Link to this record: urn:nbn:de:bsz:291-scidok-25461
Date of registration: 11-Nov-2009
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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