Preparation and Characterization of Polyvinylidene Fluoride/ZrO2-TiO2 Optical Film with Wide Band Gap and High Refractive Index

doi:10.3724/SP.J.1077.2013.12747

Abstract

Abstract: To improve the integrative properties of ZrO₂-TiO₂ optical film, polyvinylidene fluoride (PVDF)/ZrO₂-TiO₂ film was coated on the K9 glass substrate by Sol-Gel method using ZrOCl₂·8H₂O and Ti(OBu)₄ as precursor of Zr and Ti, respectively. Using PVDF as organic additive, PVDF/ZrO₂-TiO₂ optical films were characterized by SEM, FT-IR and contact angle. Then the optical properties of the PVDF/ZrO₂-TiO₂ optical films were investigated via Ultraviolet/ Visible/Near Infrared transmission spectrum, optical band gap (E_g) and refractive index. SEM images indicate that the optical films are successfully prepared on the glass substrates. The addition of PVDF in the optical films increases the contact angle between water and the films. E_g of ZrO₂-TiO₂ optical films are slightly widened with the increasing of ZrO₂ content, and E_g of PVDF/ZrO₂(50mol%)-TiO₂films are widened as the mass fraction of PVDF increases. In addition, refractive indexes of ZrO₂-TiO₂optical films increase as the mole fraction of ZrO₂ decreases, and refractive indexes of PVDF/ZrO₂(50mol%)-TiO₂ films increase as the mass fraction of PVDF increases.

Key words: ZrO₂, TiO₂, PVDF, optical film

CLC Number:

TB34

ZHANG Yu-Qing, ZHAO Li-Li, XU Shi-Long, ZHANG Chao, CHEN Xiao-Ying, SONG Li-Xin. Preparation and Characterization of Polyvinylidene Fluoride/ZrO₂-TiO₂ Optical Film with Wide Band Gap and High Refractive Index[J]. Journal of Inorganic Materials, 2013, 28(06): 671-676.

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Preparation and Characterization of Polyvinylidene Fluoride/ZrO₂-TiO₂ Optical Film with Wide Band Gap and High Refractive Index

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