Effect of polyethylene glycol on porous transparent TiO2 films prepared by sol–gel method

Multilayered titania (TiO2) films have been prepared via sol–gel dip-coating method from a tetraethyl-orthotitanate solution that contains 2g of polyethylene glycol (PEG) with different molecular weight (6000, 20,000 and 35,000). The films were deposited on fluorine doped tin oxide (FTO) coated glas...

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Bibliographic Details
Published in:Ceramics international 2014-01, Vol.40 (1), p.2209-2220
Main Authors: Calderon-Moreno, J.M., Preda, S., Predoana, L., Zaharescu, M., Anastasescu, M., Nicolescu, M., Stoica, M., Stroescu, H., Gartner, M., Buiu, O., Mihaila, M., Serban, B.
Format: Article
Language:English
Subjects:
B. Electron microscopy
C. Optical properties
PEG doped TiO2
Sol–gel method
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Summary:Multilayered titania (TiO2) films have been prepared via sol–gel dip-coating method from a tetraethyl-orthotitanate solution that contains 2g of polyethylene glycol (PEG) with different molecular weight (6000, 20,000 and 35,000). The films were deposited on fluorine doped tin oxide (FTO) coated glass and annealed by a thermal treatment at 450°C for 30min. We demonstrated how the structure, the morphology and the optical properties of the films can be controlled by varying the PEG molecular weight and number of depositions. The correlation between these parameters and the film properties was investigated. Sol–gel deposited and PEG doped TiO2 films demonstrate better properties for their use in solar cell applications, by enhancing the transmittance value in the 380–540nm range.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2013.07.139