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Proceedings Paper

New copolymers for applications as organic LEDs
Author(s): Charles W. Spangler; John W. Thurmond; Hu Li; Mingqian He; Saswati Ghosal; Yue Zhang; Martin K. Casstevens; Ryszard Burzynski
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Paper Abstract

During the past five years, (pi) -conjugated organic polymers, such as poly[p-phenylene vinylene] (PPV) and polythiophenes, have become attractive alternatives to semiconducting materials as light-emitting diodes. Various approaches to tuning emission wavelength have been proposed, such as controlling the conjugation length by employing polymer oligomers or via steric effects in the fully conjugated polymers, or by using substituent effects to fine-tune the band gap. In the present study, we demonstrate that these features can be designed into copolymeric structures in which (pi) -conjugated emitters of carefully controlled length alternate with various non-emitting flexible spacers which improve solubility and thus processibility. These copolymers display predictable emission characteristics which can also be fine-tuned by incorporation of electronic substituent effects.

Paper Details

Date Published: 15 September 1995
PDF: 8 pages
Proc. SPIE 2528, Optical and Photonic Applications of Electroactive and Conducting Polymers, (15 September 1995); doi: 10.1117/12.219559
Show Author Affiliations
Charles W. Spangler, Northern Illinois Univ. (United States)
John W. Thurmond, Northern Illinois Univ. (United States)
Hu Li, Northern Illinois Univ. (United States)
Mingqian He, Northern Illinois Univ. (United States)
Saswati Ghosal, Laser Photonics Technology, Inc. (United States)
Yue Zhang, Laser Photonics Technology, Inc. (United States)
Martin K. Casstevens, Laser Photonics Technology, Inc. (United States)
Ryszard Burzynski, Laser Photonics Technology, Inc. (United States)

Published in SPIE Proceedings Vol. 2528:
Optical and Photonic Applications of Electroactive and Conducting Polymers
Sze Chang Yang; Prasanna Chandrasekhar, Editor(s)

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