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Proceedings Paper

Design and synthesis of novel block copolymers for efficient optoelectronic applications
Author(s): Sam-Shajing Sun; Zhen Fan; Yiqing Wang; Charles Taft; James H. Haliburton; Shahin Maaref
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Paper Abstract

It has been predicted that nano-phase separated block copolymer systems containing electron rich donor blocks and electron deficient acceptor blocks may facilitate the charge carrier separation and migration in organic photovoltaic devices due to improved morphology in comparison to polymer blend system. This paper presents preliminary data describing the design and synthesis of a novel Donor-Bridge-Acceptor (D-B-A) block copolymer system for potential high efficient organic opto-electronic applications. Specifically, the donor block contains an electron donating alkyloxy derivatized polyphenylenevinylene (PPV), the acceptor block contains an electron withdrawing alkyl-sulfone derivatized polyphenylenevinylene (PPV), and the bridge block contains an electronically neutral non-conjugated aliphatic hydrocarbon chain. The key synthetic strategy includes the synthesis of each individual block first, then couple the blocks together. While the donor block stabilizes and facilitates the transport of the holes, the acceptor block stabilizes and facilitates the transport of the electrons, the bridge block is designed to hinder the probability of electron-hole recombination. Thus, improved charge separation and stability are expected with this system. In addition, charge migration toward electrodes may also be facilitated due to the potential nano-phase separated and highly ordered block copolymer ultra-structure.

Paper Details

Date Published: 21 February 2002
PDF: 8 pages
Proc. SPIE 4465, Organic Photovoltaics II, (21 February 2002); doi: 10.1117/12.456932
Show Author Affiliations
Sam-Shajing Sun, Norfolk State Univ. (United States)
Zhen Fan, Norfolk State Univ. (United States)
Yiqing Wang, Norfolk State Univ. (United States)
Charles Taft, Norfolk State Univ. (United States)
James H. Haliburton, Norfolk State Univ. (United States)
Shahin Maaref, Norfolk State Univ. (United States)

Published in SPIE Proceedings Vol. 4465:
Organic Photovoltaics II
Zakya H. Kafafi; Denis Fichou, Editor(s)

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