Please use this identifier to cite or link to this item: doi:10.22028/D291-24259
Title: Electrochromic properties of Nb2O5 and Nb2O5:X sol-gel coatings (X=Sn,Zr,Li,Ti,Mo)
Author(s): Schmitt, Michael
Aegerter, Michel A.
Language: English
Year of Publication: 1999
OPUS Source: Switchable materials and flat panel displays : 21 - 22 July 1999, Denver, Colorado / Carl M. Lampert, chair/ed. - Bellingham, Wash. : SPIE, 1999. - (SPIE proceedings series ; 3788), S. 93-102
SWD key words: Zirkonium
Elektrochemische Eigenschaft
Optische Eigenschaft
DDC notations: 620 Engineering and machine engineering
Publikation type: Conference Paper
Abstract: Two-layer coatings of Nb2O5 and niobia doped with tin (up to 15 at%), zirconium (up to 15 at%), lithium (up to 15 at%), titanium (up to 30 at%) and molybdenum (up to 30 at%) have been prepared by the sol-gel process and deposited by dip-coating on conductive ITO coated glass (R(open square) = 10 Ω (open square)). They have been sintered in air between 450°C and 600°C. Their structure, morphology, electrochemical and optical properties (measured in a liquid electrolyte (1 M LiClO4 in PC)) are reported. All systems exhibit electrochromic properties. Those are essentially determined by the structure and the morphology of the layers which can be changed in a controlled manner by the amount of doping and the sintering temperature. After Li+-insertion all amorphous coatings present a brown color, a blue one when the structure is hexagonal and a gray one when the structure is orthorhombic (pure, titanium or molybdenum doped niobia) or monoclinic (Li-doped niobia). Samples with two different structures color either blue or gray.
Link to this record: urn:nbn:de:bsz:291-scidok-24995
Date of registration: 14-Dec-2009
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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