Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/20206
Title: Fabrication and electro-optic properties of ferroelectric nanocrystal/polymer composite films
Authors: Liu, WC
Li, AD
Mak, CL 
Wong, KH
Issue Date: 2008
Publisher: American Chemical Society
Source: Journal of physical chemistry C, 2008, v. 112, no. 36, p. 14202-14208 How to cite?
Journal: Journal of physical chemistry C 
Abstract: BaTiO3 (BTO), Pb(Zr0.52Tio.48)03 (PZT), and Sr 1-., xBa, Nb2O6 (SBN; × = 0.5, 0.4, and 0.25) nanocrystal-doped polycarbonate (PC) composite thin films were prepared by a spin-coating method. Ultrafine BTO and PZT nanocrystals of pure tetragonal perovskite phase were synthesized by a hydrothermal method, while the rodlike SBN nanocrystals of pure tetragonal tungsten-bronze structure were prepared by the Pechini method. To produce better electro-optic (EO) properties through creation of noncentrosymmetry in the samples, the composite films were poled under a high electric field at suitable temperatures. Their EO coefficients as well as transmittance spectra were measured. Both BTO/PC and PZT/PC composite films showed excellent EO properties with high EO coefficients and large figures of merit. However, SBN/PC composite films established relatively small EO coefficients due to the small transverse EO coefficients of SBN single crystals. On the basis of our results, we demonstrate that these ferroelectric nanocrystal/polymer composite films are good candidates for EO applications.
URI: http://hdl.handle.net/10397/20206
ISSN: 1932-7447
EISSN: 1932-7455
DOI: 10.1021/jp803518y
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