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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.
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Document Type: Research Article

Publication date: 2013-01-01

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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