Transparent organic light emitting devices

DOI PDF 29 Citations
  • G. Gu
    Advanced Technology Center for Photonics and Optoelectronic Materials (ATC/POEM), Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544
  • V. Bulović
    Advanced Technology Center for Photonics and Optoelectronic Materials (ATC/POEM), Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544
  • P. E. Burrows
    Advanced Technology Center for Photonics and Optoelectronic Materials (ATC/POEM), Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544
  • S. R. Forrest
    Advanced Technology Center for Photonics and Optoelectronic Materials (ATC/POEM), Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544
  • M. E. Thompson
    Department of Chemistry, University of Southern California, Los Angeles, California 90089

Description

<jats:p>We report the demonstration of transparent organic light emitting devices (OLEDs) which are ∼70% transparent throughout the visible spectrum when switched off, and emit light from both sides with a total external quantum efficiency of ∼0.1% when turned on. The devices are Alq3-based single heterostructure OLEDs grown on an ITO-coated glass substrate with a top electrode composed of a very thin layer of Mg–Ag and an overlaying ITO film. The top electrode is both electron injecting and transparent. The transparent OLEDs are expected to be useful in high-resolution full-color displays, as well as for helmet-mounted, windshield-mounted, or other ‘‘head-up’’ display applications.</jats:p>

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