Color stable white organic light-emitting diodes having high color rendering index utilized by simple-hybrid structures

Young Wook Park, Young Min Kim, Jin Hwan Choi, Tae Hyun Park, Hyun Ju Choi, Min Ju Cho, U. Ra Lee, Dong Hoon Choi, Byeong Kwon Ju

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Abstract

This article reports the highly color stable white organic light-emitting diodes (WOLEDs) having a high color rendering index (CRI) utilized by simple-hybrid structures involving emitting layers (EMLs) of phosphorescent yellow polymer and a thermally deposited fluorescent blue. To derive the yellow EML, a highly soluble red dopant is developed and used with a highly soluble green co-dopant. Using a simple-hybrid structure, the emission tuned WOLEDs are successfully demonstrated with a high CRI of 93 and a highly color stable CIE 1931 coordinate over the full driving voltages from (0.33±0.00, 0.35±0.01) to (0.42±0.01, 0.44±0.01) depending on the blue EML host.

Original languageEnglish
Pages (from-to)J81-J84
JournalElectrochemical and Solid-State Letters
Volume13
Issue number7
DOIs
Publication statusPublished - 2010 Sep 7

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ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

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