1 December 1997 Synthesis and properties of new hole transport materials for organic light-emitting devices
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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.
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Mukundan Thelakkat, Mukundan Thelakkat, Andreas Bacher, Andreas Bacher, Ralf Fink, Ralf Fink, Frank Haubner, Frank Haubner, Hans-Werner Schmidt, Hans-Werner Schmidt, } "Synthesis and properties of new hole transport materials for organic light-emitting devices", Proc. SPIE 3148, Organic Light-Emitting Materials and Devices, (1 December 1997); doi: 10.1117/12.279329; https://doi.org/10.1117/12.279329
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