Journal
ORGANIC ELECTRONICS
Volume 14, Issue 6, Pages 1504-1509Publisher
ELSEVIER
DOI: 10.1016/j.orgel.2013.03.014
Keywords
Color rendering index; White device; Yellowish green dopant; High efficiency
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High color rendering index phosphorescent white organic light-emitting diodes (PHWOLEDs) were developed using a yellowish green dopant with broad light emission. A yellowish green phosphorescent dopant derived from difluorophenylquinoline ligand was synthesized and showed maximum emission peak at 550 nm and broad light emission with a full width at half maximum of 77 nm in addition to high quantum efficiency of 20.5%. The yellowish green dopant was used in PHWOLEDs to enhance the color rendering index and high color rendering index of 86.8 was obtained with a high quantum efficiency of 15.7%. (C) 2013 Elsevier B. V. All rights reserved.
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