Energy transfer in a blend of electroluminescent conjugated polymers

Jeong Ik Lee; In Nam Kang; Do Hoon Hwang; Hong Ku Shim; Sae Chae Jeoung; Dongho Kim

doi:10.1021/cm9601291

Energy transfer in a blend of electroluminescent conjugated polymers

Jeong Ik Lee, In Nam Kang, Do Hoon Hwang, Hong Ku Shim, Sae Chae Jeoung, Dongho Kim

Department of Chemistry

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94 Citations (Scopus)

Abstract

The energy transfer in a blend of electroluminescent conjugated polymers, poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) and conjugated-nonconjugated multiblock copolymers (CNMBC), was investigated. Energy transfer from CNMBC to MEH-PPV leads to the enhanced emission of MEH-PPV. Fluorescence decays also support this energy-transfer process, which is faster than radiative and nonradiative decays. PL and EL quantum efficiencies of the blended polymer were enhanced as the relative content of CNMBC was increased, and surprisingly, 500 times improved EL efficiency was observed for some blend ratios. These results provide further insight into the photophysics of conjugated polymers and the improvement of the electroluminescence quantum efficiency using the blended polymer systems.

Original language	English
Pages (from-to)	1925-1929
Number of pages	5
Journal	Chemistry of Materials
Volume	8
Issue number	8
DOIs	https://doi.org/10.1021/cm9601291
Publication status	Published - 1996 Aug

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)
Materials Chemistry

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title = "Energy transfer in a blend of electroluminescent conjugated polymers",

abstract = "The energy transfer in a blend of electroluminescent conjugated polymers, poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) and conjugated-nonconjugated multiblock copolymers (CNMBC), was investigated. Energy transfer from CNMBC to MEH-PPV leads to the enhanced emission of MEH-PPV. Fluorescence decays also support this energy-transfer process, which is faster than radiative and nonradiative decays. PL and EL quantum efficiencies of the blended polymer were enhanced as the relative content of CNMBC was increased, and surprisingly, 500 times improved EL efficiency was observed for some blend ratios. These results provide further insight into the photophysics of conjugated polymers and the improvement of the electroluminescence quantum efficiency using the blended polymer systems.",

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language = "English",

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T1 - Energy transfer in a blend of electroluminescent conjugated polymers

AU - Lee, Jeong Ik

AU - Kang, In Nam

AU - Hwang, Do Hoon

AU - Shim, Hong Ku

AU - Jeoung, Sae Chae

AU - Kim, Dongho

PY - 1996/8

Y1 - 1996/8

N2 - The energy transfer in a blend of electroluminescent conjugated polymers, poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) and conjugated-nonconjugated multiblock copolymers (CNMBC), was investigated. Energy transfer from CNMBC to MEH-PPV leads to the enhanced emission of MEH-PPV. Fluorescence decays also support this energy-transfer process, which is faster than radiative and nonradiative decays. PL and EL quantum efficiencies of the blended polymer were enhanced as the relative content of CNMBC was increased, and surprisingly, 500 times improved EL efficiency was observed for some blend ratios. These results provide further insight into the photophysics of conjugated polymers and the improvement of the electroluminescence quantum efficiency using the blended polymer systems.

AB - The energy transfer in a blend of electroluminescent conjugated polymers, poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) and conjugated-nonconjugated multiblock copolymers (CNMBC), was investigated. Energy transfer from CNMBC to MEH-PPV leads to the enhanced emission of MEH-PPV. Fluorescence decays also support this energy-transfer process, which is faster than radiative and nonradiative decays. PL and EL quantum efficiencies of the blended polymer were enhanced as the relative content of CNMBC was increased, and surprisingly, 500 times improved EL efficiency was observed for some blend ratios. These results provide further insight into the photophysics of conjugated polymers and the improvement of the electroluminescence quantum efficiency using the blended polymer systems.

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Energy transfer in a blend of electroluminescent conjugated polymers

Abstract

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