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Fabrication of Phosphorescence WOLEDs Based on Dimeric Phenoxazine Derivative for Hole Injection Layer

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Hole injection material, namely, 10,10′-bis(4-tert-butylphenyl)-N7,N7′-di(naphthalen-1-yl)-N7,N7′-diphenyl-10H,10′H-3,3′-biphenoxazine-7,7′-diamine (1-PNA-BPBPOX), were adapted to white OLED devices for solution process. White devices were fabricated using a multilayer emission structure, consisting of a single host layer. The red phosphorescent, (Ir(piq)3), and the blue phosphorescent, (FIrpic), are doped into separate layers of (mCP) host. The FIrpic and Ir(piq)3 guest molecules are directly excited by direct recombination on these molecules. When the device with BPBPOX was compared to the device with PEDOT:PSS, a commercialized solution HIL material, the luminance efficiency was 6.37 cd/A for BPBPOX and 0.66 cd/A for PEDOT:PSS for the optimized white device structure, showing 10 times as high efficiency.
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Keywords: Hole Injection Material; OLED; PDY-132; Solution Process; White

Document Type: Research Article

Affiliations: 1: Department of Chemistry, The Catholic University of Korea, Bucheon, 420-743, Korea 2: Department of Chemical Engineering, Kyung Hee University, Gyeonggi-do, 17104, Republic of Korea 3: Research Center for Green Fine Chemicals, Korea Research Institute of Chemical Technology, Ulsan, 681-802, South Korea

Publication date: August 1, 2017

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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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