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1 December 1997 LED characterization of an alternating copolymer and its blends
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Soluble light-emission alternating copolymers based on alkyfluorene and bis-phenylenevinylene were synthesized using Wittig coupling reaction. The PL and EL efficiency of emissive polymers increased in the blends diluted with non- emissive polymer such a PVK. The emission spectrum of the blends also became narrower than that of emissive polymer only due to the reduction of intermolecular excimer formation. The blends of emissive polymers with different band-gap energies were investigated in terms of energy transfer mechanisms. The characteristics of emissive polymer with lower band-gap energy dominates the PL and EL spectrum of blends. The quantum efficiency in the order of 0.025 percent was obtained the electrodes of ITO and aluminum.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dong Young Kim, Jai Kyeong Kim, Hyun Nam Cho, and Chung Yup Kim "LED characterization of an alternating copolymer and its blends", Proc. SPIE 3148, Organic Light-Emitting Materials and Devices, (1 December 1997);

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