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  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1996),
  • paper CFA4

Photorefractivity of functionalized silica films prepared by sol-gel method

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Abstract

This study reports on photorefractive hybrid xerogel films that were, for the first time, we believe, synthetized by the sol- gel process. The silica backbone possesses covalently anchored nonlinear optical chromophores (disperse red one) and charge transporting groups (carba-zole units). Coating solutions were obtained from copolymerization of carba-zole-and DR1-attached silane monomers with tetraethoxysilane (TEOS). A small amount of 2,4,7-trinitrofluorenone was also added to increase the photosensitivity in the visible. Thin films of thicknesses ranging from 0.5 to 5 micrometers were deposited on ITO-recovered glass substrates using the spin-coating technique.

© 1996 Optical Society of America

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