Spectral broadening in electroluminescence of white organic light-emitting diodes based on complementary colors

Young Min Kim, Young Wook Park, Jin Hwan Choi, Byeong Kwon Ju, Jae Hoon Jung, Jai Kyeong Kim

Research output: Contribution to journalArticle

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Abstract

The authors report the optical and electroluminescent (EL) properties of white organic light-emitting diodes (OLEDs) which have two emitters with similar structures: 1, 1, 4, 4-tetraphenyl-1, 3-butadiene and 2,9-dimethyl-4,7- diphenyl-1,10-phenanthroline have an emission peak of 400 nm around the near ultraviolet, and tris-(8-hydroxyquinoline) aluminum doped with 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran has an emission peak of 580 nm producing a yellow color. The EL spectra of the white OLED have shown a broadening through visual range from 400 to 780 nm. This spectral broadening is related to an exciplex emission at the organic solid interface.

Original languageEnglish
Article number033506
JournalApplied Physics Letters
Volume90
Issue number3
DOIs
Publication statusPublished - 2007 Jan 29

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electroluminescence
light emitting diodes
color
organic solids
butadiene
emitters
aluminum

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Spectral broadening in electroluminescence of white organic light-emitting diodes based on complementary colors. / Kim, Young Min; Park, Young Wook; Choi, Jin Hwan; Ju, Byeong Kwon; Jung, Jae Hoon; Kim, Jai Kyeong.

In: Applied Physics Letters, Vol. 90, No. 3, 033506, 29.01.2007.

Research output: Contribution to journalArticle

Kim, Young Min ; Park, Young Wook ; Choi, Jin Hwan ; Ju, Byeong Kwon ; Jung, Jae Hoon ; Kim, Jai Kyeong. / Spectral broadening in electroluminescence of white organic light-emitting diodes based on complementary colors. In: Applied Physics Letters. 2007 ; Vol. 90, No. 3.
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