Photodynamics of OLED triplet emitters lr(ppy)3 and PtOEP

被引：16

作者：

Bansal, A. K.

Penzkofer, A.

Holzer, W.

Tsuboi, Taiju

机构：

[1] Univ Regensburg, Inst 2 Expt & Angewandte Phys, D-93053 Regensburg, Germany

[2] Kyoto Sangyo Univ, Fac Engn, Kita Ku, Kyoto 603, Japan

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2007年 / 467卷

关键词：

emission dynamics; host-guest systems; triplet emitters;

D O I：

10.1080/15421400701220387

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 ill 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.

引用

页码：21 / 31

页数：11

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