Ferroelectric and Luminescent Properties of Electroluminescence Devices Using Ferroelectric Polymer-Phosphor Composite Films

Koji Aizawa; Yusuke Ohtani

doi:10.4028/www.scientific.net/KEM.388.137

Paper Titles

Ferromagnetic Properties in Co-Substituted Titania Nanosheets
p.119

Fabrication of Electroluminescent Devices Using Nanocrystalline Oxide Phosphors
p.123

Three-Dimensional TEM Tomography Analysis of Epitaxially Assembled Perovskite Oxide Nanocrystalline Particles
p.127

Epitaxial Growth of LSMO Film Prepared by Excimer Laser-Assisted Metal Organic Deposition (ELAMOD)
p.133

Ferroelectric and Luminescent Properties of Electroluminescence Devices Using Ferroelectric Polymer-Phosphor Composite Films
p.137

Patterning of HfO₂ Thin Films Using Chemical Solution and Dielectric Properties
p.141

Adsorption Property of Dye Molecule over Semi-Crystalline Mesoporous Titania Films
p.145

Crystallization Behavior of BaO-TiO₂-GeO₂ Glass Thin Film
p.149

Fabrication of Triboluminescent Film on Inconel 600 Substrate by RF Magnetron Sputtering Method
p.153

HomeKey Engineering MaterialsKey Engineering Materials Vol. 388Ferroelectric and Luminescent Properties of...

Ferroelectric and Luminescent Properties of Electroluminescence Devices Using Ferroelectric Polymer-Phosphor Composite Films

Abstract:

We fabricated and characterized electroluminescence (EL) devices using ferroelectric polyvinylidene fluoride/trifluoroethylene (PVDF/TrFE) copolymer composites mixed with Mn- and Cu-activated ZnS phosphor particles. Spin-coated polymer composite films on glass substrates with transparent conductive oxides were dried at 140 oC for 1 h in vacuum due to growth of ferroelectric phase. The maximum remnant polarization and luminescence of the fabricated devices were approximately 20 μC/cm2 and 100 cd/m2, respectively. Increases of the luminescence were observed in the fabricated EL devices using PVDF/TrFE copolymer in comparison with using PVDF polymer as dielectrics. EL emission intensities were also enhanced by applying the bipolar pulses. These results suggest an effect of polarization reversal in the composite films.

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Key Engineering Materials (Volume 388)

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137-140

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https://doi.org/10.4028/www.scientific.net/KEM.388.137

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September 2008

Authors:

Koji Aizawa, Yusuke Ohtani

Keywords:

Composite, Electroluminescence, Ferroelectric, Phosphor, Polymer

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