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Proceedings Paper

Synthesis and properties of new hole transport materials for organic light-emitting devices
Author(s): Mukundan Thelakkat; Andreas Bacher; Ralf Fink; Frank Haubner; Hans-Werner Schmidt
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Paper Abstract

We synthesized low molecular weight triphenyldiamines (TPDs), novel 1,3,5-tris(diarylamino)benzenes (TDABs), polymeric triphenyldiamines and insoluble triphenylamine networks based on tris(4-ethynylphenyl)amine as hole transport materials for electroluminescent displays. The HOMO energy values as determined from cyclic voltammetry measurements for TPDs and TDABs are between -4.97 and -5.16 eV. By using a polymeric TPD as hole transport layer and tris(8-quinolinolato) aluminium as emitter, LEDs with an onset voltage of 3V and a luminance up to 900 cs?m2 were obtained under ambient conditions, using airstable Al-electrode as cathode and ITO as anode.

Paper Details

Date Published: 1 December 1997
PDF: 7 pages
Proc. SPIE 3148, Organic Light-Emitting Materials and Devices, (1 December 1997); doi: 10.1117/12.279329
Show Author Affiliations
Mukundan Thelakkat, Univ. Bayreuth (Germany)
Andreas Bacher, Univ. Bayreuth (Germany)
Ralf Fink, Univ. Bayreuth (Germany)
Frank Haubner, Univ. Bayreuth (Germany)
Hans-Werner Schmidt, Univ. Bayreuth (Germany)


Published in SPIE Proceedings Vol. 3148:
Organic Light-Emitting Materials and Devices
Zakya H. Kafafi, Editor(s)

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