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

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      Author
      Budunoglu, H.
      Yildirim, A.
      Bayındır, Mehmet
      Date
      2012
      Source Title
      Journal of Materials Chemistry
      Print ISSN
      0959-9428
      Electronic ISSN
      1364-5501
      Publisher
      Royal Society of Chemistry
      Volume
      22
      Issue
      19
      Pages
      9671 - 9677
      Language
      English
      Type
      Article
      Item Usage Stats
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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. © 2012 The Royal Society of Chemistry.
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      http://hdl.handle.net/11693/21470
      Published Version (Please cite this version)
      http://dx.doi.org/10.1039/c2jm30804e
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      • Department of Physics 2329
      • Institute of Materials Science and Nanotechnology (UNAM) 1831
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