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Top Emitting Organic Light Emitting Diodes with Opaque Metal Grid Electrodes by Transfer Technique

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The opaque metal grid electrodes are introduced to fabricate top emitting organic light emitting diodes (TOLEDs) through metal transfer technique. To transmit the lights, micrometer-sized patterns of aluminum (Al) were utilized as top cathodes in OLEDs and Al mirrors were also deposited at the other side of transparent substrates to reflect the lights emitted at the bottom sides. Although the only 50% of brightness compared to bottom emitting OLEDs (BOLEDs) could be achieved theoretically, the actual devices showed more than 70% based on the compressive effects during the metal transfer process. Since the resolution of human eyes recognizes these micrometer-sized grid structures as one pixel, TOLEDs can be simply fabricated without significant loss of efficiency.
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Keywords: GRID ELECTRODE; OPAQUE ELECTRODE; ORGANIC LIGHT EMITTING DIODES; TOLEDS; TRANSFER TECHNIQUE

Document Type: Research Article

Publication date: 2011-05-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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