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Ιδρυματικό Αποθετήριο [SANDBOX]
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Πολυτεχνείο Κρήτης
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| URI | http://purl.tuc.gr/dl/dias/A052A8C8-2E9B-41ED-BCDA-D8AEA1563296 | - |
| Αναγνωριστικό | https://doi.org/10.1016/j.solmat.2004.02.019 | - |
| Αναγνωριστικό | http://www.sciencedirect.com/science/article/pii/S0927024804001059 | - |
| Γλώσσα | en | - |
| Τίτλος | The effect of water on the electrochromic properties of WO3 films prepared by vacuum and chemical methods | en |
| Δημιουργός | Papaefthimiou Spiros | en |
| Δημιουργός | Παπαευθυμιου Σπυριδων | el |
| Δημιουργός | P. Yianoulis | en |
| Δημιουργός | G. Leftheriotis | en |
| Εκδότης | Elsevier | en |
| Περίληψη | We present a comparative study on the effect of absorbed water on the properties of tungsten oxide films prepared by two different methods (e-gun evaporation, and an aqueous sol–gel technique). Scanning electron microscopy, Fourier transform infrared spectroscopy and electrochemical techniques have been used to assess the film properties. It has been found that the preparation method of the films greatly affects their water content and thus, electron gun evaporated films have less water incorporated into their structure than their sol–gel counterparts. The former are closely packed and transparent with most of their water content adsorbed on their surface, while the latter have a porous structure, being opaque, highly hydroxylated and hydrated to a lesser extent. Both types of films exhibit reversible electrochromism, with the evaporated films being stable up to 5000 coloration-bleaching cycles and the sol–gel ones gradually degrading after 1000 cycles. Irreversible Li+ trapping related to the presence of water and hydroxyl radicals has been envisaged as the cause of the inferior cycling stability of the sol–gel films. | en |
| Τύπος | Peer-Reviewed Journal Publication | en |
| Τύπος | Δημοσίευση σε Περιοδικό με Κριτές | el |
| Άδεια Χρήσης | http://creativecommons.org/licenses/by/4.0/ | en |
| Ημερομηνία | 2015-10-24 | - |
| Ημερομηνία Δημοσίευσης | 2004 | - |
| Βιβλιογραφική Αναφορά | G. Leftheriotis, S. Papaefthimiou and P. Yianoulis, "The effect of water on the electrochromic properties of WO3 films prepared by vacuum and chemical methods", Solar Energy Materials and Solar Cells, Vol. 83, no. 1, pp. 115–124, Jun. 2004. Doi:10.1016/j.solmat.2004.02.019. | en |
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