Organic light-emitting diodes having exclusive near-infrared electrophosphorescence

Evan L. Williams, Jian Li, Ghassan E. Jabbour

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Abstract

Near-infrared (NIR) emission is demonstrated from phosphorescent organic light-emitting diodes containing blends of polymeric host and heavy metal complex, iridium(III) bis(1-pyrenyl-isoquinolinato-N,C′) acetylacetonate. The devices exhibit exclusive NIR emission with a peak value at 720 nm. Forward light output exceeds 100 μW/cm2, and the external quantum efficiency is nearly 0.1%. These values are shown to increase upon using a hole blocking layer in the device architecture.

Original languageEnglish (US)
Article number083506
JournalApplied Physics Letters
Volume89
Issue number8
DOIs
Publication statusPublished - 2006

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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