Work

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

Year: 2012

Type: article

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.

Source: Journal of Materials Chemistry

DOI: 10.1039/c2jm30804e

Authors: Hulya Budunoglu, Adem Yildirim, Mehmet Bayindir

Institutions: Bilkent University, National Nanotechnology Research Center

Language: English

Topic: Optical Coatings and Gratings

Subfield: Surfaces, Coatings and Films

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funder: Türkiye Bilimsel ve Teknolojik Araştırma Kurumu

Awards: Polimer fiberler içerisinde metrelerce uzun metal, yarıiletken, polimer nanotel ve nanotüp dizileri elde edilmesi ve uygulamaları, Organik olarak modifiye edilmiş silika kloidal çözelti tabanlı çok işlevli nanoyapılı kaplamaların fotovvoltaik ve sensör uygulamaları