US EPA

8478260 

Journal Article 

White-electroluminescent device with horizontally patterned blue/yellow phosphor-layer structure 

Park, BooWon; Choi, NamSik; Park, KWon; Son, SoMo; Kim, JSu; Shon, PK; , 

2007 

Yes 

Journal of Luminescence
ISSN: 0022-2313 

ELSEVIER SCIENCE BV 

AMSTERDAM 

531-533 

10.1016/j.jlumin.2007.03.004 

WOS:000249567300039 

https://linkinghub.elsevier.com/retrieve/pii/S0022231307001068
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White-electroluminescent (EL) devices with stripe-patterned and square-patterned phosphor-layer structures are fabricated through a screen printing method: electrode/BaTiO3 insulator layer/patterned blue ZnS : Cu, C1 and yellow ZnS : Cu, Mn phosphor layer/ITO PET substrate. The luminous intensities of EL devices with stripe-patterned and square-patterned phosphor-layer structures are 33% and 23% higher than a conventional device with the phosphor-layer structure without any patterns using the phosphor blend. It can be explained in terms of the absorption of the emitted blue light of blue phosphor layer by the yellow-emitting phosphor layer. The EL device of our patterned phosphor-layer structure gives the possibility to enhance the luminance. (C) 2007 Elsevier B.V. All rights reserved.