Near infrared electroluminescence from neodymium complex-doped polymer light emitting diodes

A. O'Riordan, E. O'Connor, Stephen Moynihan, Peter Nockemann, P. Fias, R. Van Deun, D. Cupertino, P. Mackie, Thomas Redmond

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57 Citations (Scopus)

Abstract

Organic light emitting diode devices employing organometallic Nd(9-hydroxyphenalen-1-one)(3) complexes as near infrared emissive dopants dispersed within poly(N-vinylcarbazole) (PVK) host matrices have been fabricated by spin-casting layers of the doped polymer onto glass/indium tin oxide (ITO)/3,4-polyethylene-dioxythiophene-polystyrene sulfonate (PEDOT) substrates. Room temperature electroluminescence, centered at similar to 1065 nm. was observed from devices top contacted by evaporated aluminum or calcium metal cathodes and was assigned to transitions between the F-4(3/2) -> I-4(11/2) levels of the Nd3+ ions. In particular, a near infrared irradiance of 8.5 nW/mm(2) and an external quantum efficiency of 0.007% was achieved using glass/ITO/PEDOT/PVK:Nd(9-hydroxyphenalen-1-one)(3)/Ca/Al devices. (c) 2005 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)299-303
Number of pages5
JournalThin Solid Films
Volume497
Issue number1-2
DOIs
Publication statusPublished - 21 Feb 2006

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

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    O'Riordan, A., O'Connor, E., Moynihan, S., Nockemann, P., Fias, P., Van Deun, R., Cupertino, D., Mackie, P., & Redmond, T. (2006). Near infrared electroluminescence from neodymium complex-doped polymer light emitting diodes. Thin Solid Films, 497(1-2), 299-303. https://doi.org/10.1016/j.tsf.2005.10.071