Issue 106, 2014

Photochromic Ag:TiO2 thin films on PET substrate

Abstract

TiO2:Ag nanocomposite thin films were prepared on plastic PET substrate in two steps. First, a sol–gel route and evaporation induced self-assembly (EISA) method were used to fabricate the TiO2 matrix. The use of thermal treatment being discordant with the plastic substrate, the mesoporosity was realized by chemical extraction or infrared annealing. Silver was then introduced in the film porosity in the form of ions by soaking the films into a silver salt. A reversible photochromic behavior was successfully demonstrated after successive cycles of UV and visible laser exposures without degrading the PET substrate. This laser-induced colour changes are based on the reversible growth and dissociation of silver nanoparticles within the titania matrix.

Graphical abstract: Photochromic Ag:TiO2 thin films on PET substrate

Article information

Article type
Paper
Submitted
17 Aug 2014
Accepted
04 Nov 2014
First published
07 Nov 2014

RSC Adv., 2014,4, 61305-61312

Author version available

Photochromic Ag:TiO2 thin films on PET substrate

F. Tricot, F. Vocanson, D. Chaussy, D. Beneventi, S. Reynaud, Y. Lefkir and N. Destouches, RSC Adv., 2014, 4, 61305 DOI: 10.1039/C4RA08804B

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