Light emission in phase separated conjugated and non-conjugated polymer blends

Phase separations in conjugated polymer (MEH-PPV) and non-conjugated polymer (PMMA) are studied by a near-field scanning microscopy and spectroscopy. Micron scale binary decomposition without photoluminescence spectrum shift occurs when the blending ratio (MEH-PPV/PMMA) is larger than one. When the...

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Bibliographic Details
Published inCLEO/Pacific Rim 2003. The 5th Pacific Rim Conference on Lasers and Electro-Optics (IEEE Cat. No.03TH8671) Vol. 2; p. 723 vol.2
Main Authors Shen-Yi Hsu, Hsieh-Li Chou, Pei-Kuen Wei
Format Conference Proceeding
LanguageEnglish
Published IEEE 2003
Subjects
Electroluminescence
Laser excitation
Light emitting diodes
Microscopy
Organic light emitting diodes
Photoluminescence
Plastic insulation
Polymer films
Spectroscopy
Voltage
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Summary:Phase separations in conjugated polymer (MEH-PPV) and non-conjugated polymer (PMMA) are studied by a near-field scanning microscopy and spectroscopy. Micron scale binary decomposition without photoluminescence spectrum shift occurs when the blending ratio (MEH-PPV/PMMA) is larger than one. When the ratio is smaller, the film becomes homogeneous and an /spl sim/100 nm blue shift of PL spectrum happened. The new PL spectrum indicates the excitons in MEH-PPV chains are interrupted by the PMMA, and thus emitting light as PPV oligomers.
ISBN:9780780377660
0780377664
DOI:10.1109/CLEOPR.2003.1277262