Singlet excimer electroluminescence within N, N′-di-1-naphthalenyl-N, N′-diphenyl-[1,1′-biphenyl]-4,4′-diamine based diodes

Paolo A. Losio, Rizwan U.A. Khan, Peter Günter, Boon Kar Yap, Jo S. Wilson, Donal D.C. Bradley

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The authors report the fabrication of organic light-emitting diodes based on N,N′-di-1-naphthalenyl-N, N′-diphenyl-[1, 1′-biphenyl]-4, 4′-diamine (NPB) that emit via singlet excimer states. When the film deposition rate of NPB is reduced from 17 to 1 nm/min, they observe a reduction in intensity of the photoluminescence peak at 437 nm and the evolution of a new, broader peak at 503 nm. From optical absorption and time resolved photoluminescence data the authors attribute this new peak to singlet excimer emission. The authors demonstrate green electroluminescence from organic diodes that utilize this effect. The possible morphological variations resulting in the monomer to excimer transition are discussed.

Original languageEnglish
Article number041914
JournalApplied Physics Letters
Volume89
Issue number4
DOIs
Publication statusPublished - 04 Aug 2006

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excimers
diamines
electroluminescence
diodes
photoluminescence
optical absorption
light emitting diodes
monomers
fabrication

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Losio, Paolo A. ; Khan, Rizwan U.A. ; Günter, Peter ; Yap, Boon Kar ; Wilson, Jo S. ; Bradley, Donal D.C. / Singlet excimer electroluminescence within N, N′-di-1-naphthalenyl-N, N′-diphenyl-[1,1′-biphenyl]-4,4′-diamine based diodes. In: Applied Physics Letters. 2006 ; Vol. 89, No. 4.
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Singlet excimer electroluminescence within N, N′-di-1-naphthalenyl-N, N′-diphenyl-[1,1′-biphenyl]-4,4′-diamine based diodes. / Losio, Paolo A.; Khan, Rizwan U.A.; Günter, Peter; Yap, Boon Kar; Wilson, Jo S.; Bradley, Donal D.C.

In: Applied Physics Letters, Vol. 89, No. 4, 041914, 04.08.2006.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Singlet excimer electroluminescence within N, N′-di-1-naphthalenyl-N, N′-diphenyl-[1,1′-biphenyl]-4,4′-diamine based diodes

AU - Losio, Paolo A.

AU - Khan, Rizwan U.A.

AU - Günter, Peter

AU - Yap, Boon Kar

AU - Wilson, Jo S.

AU - Bradley, Donal D.C.

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AB - The authors report the fabrication of organic light-emitting diodes based on N,N′-di-1-naphthalenyl-N, N′-diphenyl-[1, 1′-biphenyl]-4, 4′-diamine (NPB) that emit via singlet excimer states. When the film deposition rate of NPB is reduced from 17 to 1 nm/min, they observe a reduction in intensity of the photoluminescence peak at 437 nm and the evolution of a new, broader peak at 503 nm. From optical absorption and time resolved photoluminescence data the authors attribute this new peak to singlet excimer emission. The authors demonstrate green electroluminescence from organic diodes that utilize this effect. The possible morphological variations resulting in the monomer to excimer transition are discussed.

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