An electrophosphorescent organic light emitting concentrator

Jaesang Lee; Michael Slootsky; Kyusang Lee; Yifan Zhang; Stephen R Forrest

doi:10.1038/lsa.2014.62

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An electrophosphorescent organic light emitting concentrator

Original Articles

- An electrophosphorescent organic light emitting concentrator
- Light: Science & Applications Vol. 3, Issue 3, (2014)
- Affiliations：
  
  1.Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA
  2.Department of Physics, University of Michigan, Ann Arbor, MI, USA
  3.Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI, USA
- Author bio：
  
  Dr SR Forrest, Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA Email: stevefor@umich.edu
- Funds：
- DOI：10.1038/lsa.2014.62
  CLC：
- Published：2014-09，
  
  Published Online：20 June 2014，
  
  Received：26 February 2014，
  
  Revised：27 March 2014，
  
  Accepted：31 March 2014
- Accepted：
Scan QR Code
Lee, J. et al. An electrophosphorescent organic light emitting concentrator. Light: Science & Applications, 3, e181 (2014).
DOI：

Lee, J. et al. An electrophosphorescent organic light emitting concentrator. Light: Science & Applications, 3, e181 (2014). DOI： 10.1038/lsa.2014.62.

摘要

Abstract

We demonstrate threefold directional light concentration from an organic light-emitting diode luminaire for use in spot lighting and other applications where high intensity illumination is required. The concentrating luminaire comprises four triangular

large-area green electrophosphorescent organic light emitting diodes (PHOLEDs) deposited on plastic substrates and assembled into a pyramidal structure with an open base that serves as the light exit aperture. The PHOLED surfaces are highly reflective to direct the emission from the devices to the aperture independent of the original emission position within the pyramid. The far-field intensity profile of the concentrator has a 'batwing' distribution that meets the requirements for general lighting for uniform illumination of planar surfaces.

关键词

Keywords

large-area PHOLEDluminairephosphorescenceplastic substrates

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