Loading…
Fabrication of Electroluminescent Devices Using Nanocrystalline Oxide Phosphors
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 photolumines...
Saved in:
Published in: | Key engineering materials 2009-01, Vol.388, p.123-126 |
---|---|
Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | 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. |
---|---|
ISSN: | 1013-9826 1662-9795 1662-9795 |
DOI: | 10.4028/www.scientific.net/KEM.388.123 |