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Synthesis of submicron-sized spherical green phosphors by reverse emulsion method and their application to phosphor inks for ink-jet process in PDP

Title
Synthesis of submicron-sized spherical green phosphors by reverse emulsion method and their application to phosphor inks for ink-jet process in PDP
Authors
Kim, SH[Kim, Soon Hak]Han, YS[Han, Yoon Soo]Kwon, Y[Kwon, Younghwan]Hur, Y[Hur, Youngjune]Kwak, G[Kwak, Giseop]Hur, BK[Hur, Byung Ki]Park, LS[Park, Lee Soon]
DGIST Authors
Han, YS[Han, Yoon Soo]
Issue Date
2008-10
Citation
Displays, 29(4), 333-338
Type
Article
Article Type
Article
Keywords
EmulsificationEmulsion MethodEmulsionsGreen PhosphorsInkInk-Jet ProcessingInk JettingLight EmissionLuminescencePDPPhosphor InkPhosphorsReverse EmulsionSpherical PhosphorSub MicronsZinc
ISSN
0141-9382
Abstract
Sphere-shaped green phosphor, Zn2SiO4:Mn, with 100-500 nm of average diameter was successfully prepared by the reverse emulsion method to formulate the phosphor ink for ink-jet processing. It was found that the aqueous phosphor ink exhibited excellent dispersion stability by introducing organic low molecular weight additives such as nonionic type of fatty acid containing ethylene oxide (BYK 192®), 3-(2-aminoethyl)aminopropyl trimethoxy silane (SA0700®) and acetic acid, due to the combination of the steric hindrance originated from BYK 192® and charge repulsion from SA0700® and acetic acid. The patterned phosphor layers with thickness uniformity (±0.008 μm to ± 0.055 μm depending on the formulation of phosphor inks) and precisely controlled thickness (in the range of 5-50 μm) in between barrier ribs could be obtained by using ink-jet printing with optimized process parameters such as nozzle diameter, dispensing pressure and nozzle moving speed. Optical properties of the resulting phosphor layers fired at different temperatures were compared in terms of PL emission intensity and color coordinate. © 2007 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/2518
DOI
10.1016/j.displa.2007.10.002
Publisher
Elsevier B.V.
Files:
There are no files associated with this item.
Collection:
ETC1. Journal Articles


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