Photo- and Electroluminescence of Doped Polymers in Langmuir-Blodgett Structures
作者:
Anatoliy Avdeenko,
Alexander Tolmachev,
Nina Voronkina,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 1998)
卷期:
Volume 324,
issue 1
页码: 83-88
ISSN:1058-725X
年代: 1998
DOI:10.1080/10587259808047138
出版商: Taylor & Francis Group
关键词: organic luminophors;polymers;photoluminescence;electroluminescence;light emitting diodes
数据来源: Taylor
摘要:
Light emitting diodes consisting of molecular-doped polymeric LB films with alternating electron-transport and hole-transport emitting layers are first described. Electroluminescent cells were prepared using standard ITO and Mg/Ag electrodes. PMMA/PBD (1:3) composition was used to form the electron-transport layers (I). The hole-transport one (II) was formed from PVK/TPB (3% mol.). Three cell types have been studied. Two of them had the same structure ITO/II(50 nm)/I(50 nm)/Mg/Ag but were prepared using different methods: spin-coating and LB technique. The third cell type had a multilayer LB structure: ITO/I(10 nm)/II(4 nm)/I(10 nm)/II(4 nm)/I(4 nm)/II(10 nm)/Mg/Ag. Considerable distinctions were observed in electroluminescence spectra of spin-coated and LB structures. Possible reasons for those distinctions are discussed. The multilayer LB structure was one decimal order more stable in air than the bilayer one.
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