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Issue 19, 2012
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Flexible and mechanically stable antireflective coatings from nanoporous organically modified silica colloids

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Abstract

We report the preparation of flexible and mechanically stable antireflective organically modified silica (ormosil) coatings at ambient conditions. Thin films are obtained from colloidal suspensions of ormosil gels which are prepared using methyltrimethoxysilane (MTMS) and tetraethyl orthosilicate (TEOS) monomers. The ormosil suspensions are directly applicable and suitable for the large-area deposition of nanoporous ormosil thin films. The nanoporosity of the films can be tuned by changing the monomer ratio of the starting solution. Thin films on flexible substrates retain their antireflective properties even after 100 cycles of excessive bending without a significant change in transmission. Furthermore, the films remained intact after water dripping and adhesive tape tests. In addition, thin films on glass substrates are found to exhibit antifogging properties after annealing at 600 °C for 30 min. The ease of fabrication and multifunctionality of these films make them ideal coatings for flexible electronic and optoelectronic devices, sensors, and solar cells.

Graphical abstract: Flexible and mechanically stable antireflective coatings from nanoporous organically modified silica colloids

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Publication details

The article was received on 09 Feb 2012, accepted on 15 Mar 2012 and first published on 16 Mar 2012


Article type: Paper
DOI: 10.1039/C2JM30804E
Citation: J. Mater. Chem., 2012,22, 9671-9677
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    Flexible and mechanically stable antireflective coatings from nanoporous organically modified silica colloids

    H. Budunoglu, A. Yildirim and M. Bayindir, J. Mater. Chem., 2012, 22, 9671
    DOI: 10.1039/C2JM30804E

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