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Luminescent Properties of High Color Rendering Powder Electroluminescent Devices

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A powder electroluminescent (EL) device can be fabricated by a simple printing process. The present applications of these devices are restricted to providing low-intensity backlighting. In order to realize a lighting system, it is necessary to develop EL devices that have white luminescence. It was believed that it is difficult to realize white luminescence in powder-type inorganic EL devices. However, we have produced high-luminance organicdye-dispersed powder EL devices. Moreover, we have produced high color rendering white-light-emitting organic-dye-dispersed powder EL devices that consist of the three primary colors. The operating conditions for the organic-dye-dispersed powder EL devices are the same as those for a conventional powder EL device. The film thicknesses of both the dielectric and phosphor layers were approximately 30 μm. We have manufactured a novel white-light-emitting powder EL device with a new hybrid structure by doping the phosphor layer with organic fluorescent dyes.

Document Type: Research Article

Publication date: January 1, 2013

More about this publication?
  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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