Fabrication of Electroluminescent Devices Using Nanocrystalline Oxide Phosphors

Rei Fujiwara; Hiroyuki Sano; Seiichiro Harada; Mikio Shimizu; Hiromichi  Takebe; Makoto Kuwabara

doi:10.4028/www.scientific.net/KEM.388.123

Paper Titles

Morphology Control of High Luminance Phosphors
p.107

Preparation of Barium Titanate Nanocube Particles by Solvothermal Method and their Characterization
p.111

Preparation of TiO₂ Thin Films by Electrophoresis Deposition Method in Highly Dispersed Colloidal Solution
p.115

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

HomeKey Engineering MaterialsKey Engineering Materials Vol. 388Fabrication of Electroluminescent Devices Using...

Fabrication of Electroluminescent Devices Using Nanocrystalline Oxide Phosphors

Abstract:

Nanosized Y2O3:Eu3+ crystalline powders with average particle sizes around 100 nm, measured by field-emission scanning electron microscopy (FE-SEM), have been synthesized by a polymerized precursor method using carboxymethyl cellulose (CMC). The nanocrystalline phosphors exhibit intense photoluminescence (PL) and cathodoluminescence (CL) around 612 nm, being attributed to the 5D0-7F2 transition of Eu3+. Electroluminescence (EL) properties of the nanophosphors in the form of thick films were investigated, and emission of red light with maximum intensity at 612 nm (corresponding to x = 0.57 and y = 0.32 in the CIE chromaticity diagram) was observed under high ac field at 1 kHz. The obtained results suggest a possibility that Y2O3:Eu3+ nanopowders can be used as a red-emitting phosphor for EL devices.

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Periodical:

Key Engineering Materials (Volume 388)

Pages:

123-126

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.388.123

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Online since:

September 2008

Authors:

Rei Fujiwara, Hiroyuki Sano, Seiichiro Harada, Mikio Shimizu, Hiromichi Takebe, Makoto Kuwabara

Keywords:

Carboxymethyl Cellulose, Cathodoluminescence, Electroluminescence, Photoluminescence (PL), Y₂O₃

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