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Titel: Synthesis of multicolor Nb2O5 coatings for electrochromic devices
Verfasser: Pawlicka, Agnieszka
Atik, Mohamed
Aegerter, Michel A.
Sprache: Englisch
Erscheinungsjahr: 1997
Quelle: Thin solid films. - 301. 1997, S. 236-241
SWD-Schlagwörter: Dünne Schicht
Keramik
Niob
Elektrochemie
Tauchbeschichten
Differential scanning calorimetry
FT-IR-Spektroskopie
Kathode
Anode
DDC-Sachgruppe: 500 Naturwissenschaften
Dokumentart : Journalartikel
Kurzfassung: Thin films of Nb2O5 were obtained by a sonocatalytic sol-gel method using chloroalkoxides as precursors. They were deposited using the dip-coating technique and calcined at different temperatures. Precipitates were characterized by X-ray diffraction, DSC, FTIR and the films by SEM. The films of Nb2O5 present a good electrochemical response under Li ions insertion. Depending on the treatment temperature, the films change their color from transparent to brown or blue. The efficiency of coloring was estimated to be 22 cm2 C-1 at 600 nm for a 300 nm thick film with a change in optical transmission from 80% to 15%. The cathodic and anodic charges exchanged at a velocity of 50 mV s-1 were about 15 mC cm-2 and the process is fully reversible. The values measured up to 100 cycles are constant, indicating good chemical stability of the films.
Link zu diesem Datensatz: urn:nbn:de:bsz:291-scidok-24413
hdl:20.500.11880/24249
http://dx.doi.org/10.22028/D291-24193
SciDok-Publikation: 2-Nov-2009
Fakultät: Sonstige Einrichtungen
Fachrichtung: SE - INM Leibniz-Institut für Neue Materialien
Fakultät / Institution:INM
SE - Sonstige Einrichtungen

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