Journal
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
Volume 467, Issue -, Pages 21-31Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/15421400701220387
Keywords
emission dynamics; host-guest systems; triplet emitters
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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.
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