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Molecular Crystals and Liquid Crystals Volume 467, 2007 - Issue 1
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Energy Structure of Organic Materials, Excitation and Transport Processes in Organic Compounds

Photodynamics of OLED Triplet Emitters Ir(ppy)3 and PtOEP

A. K. Bansal Institut II–Experimentelle und Angewandte Physik, Universität Regensburg, Regensburg, Germany
,
A. Penzkofer Institut II–Experimentelle und Angewandte Physik, Universität Regensburg, Regensburg, GermanyCorrespondence[email protected]
,
W. Holzer Institut II–Experimentelle und Angewandte Physik, Universität Regensburg, Regensburg, Germany
&
Taiju Tsuboi Faculty of Engineering, Kyoto Sangyo University, Kamigamo, Kita-ku, Kyoto, Japan
Pages 21-31 | Published online: 22 Sep 2010
 
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Abstract

The absorption behaviour and the emission dynamics of the triplet emitters Ir(ppy)3 and PtOEP in the singlet emitters, polystyrene (PS) and dicarbazole-biphenyl (CBP), are studied. Thin films are prepared by spin-coating. The host (PS, CBP)–guest (Ir(ppy)3, PtOEP) interaction is investigated. The luminescence behaviour in the case of guest excitation (the excitation frequency in the transparency region of hosts) is compared with the luminescence behaviour in the case of host excitation (the excitation frequency in the absorption region of hosts). The efficient host-to-guest energy transfer is observed. Additionally, the excitation transfer from PS to CBP and TPD (triphenylamine dimer) is studied.

Notes

a From [Citation24].

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