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Proceedings Paper

Block copolymers for optoelectronics
Author(s): Sam-Shajing Sun; Zhen Fan; Yiqing Wang; Charles Taft; James H. Haliburton; Shahin Maaref; Abram J. Ledbetter; Carl E. Bonner
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Paper Abstract

A D(donor)-B(bridge)-A(acceptor)-B(bridge)-type block copolymer system has been developed and preliminarily examined for potential opto-electronic photovoltaic functions. The unique feature of the device includes a primary DBAB-type block copolymer backbone, where D and A are conjugated donor and acceptor polymer blocks, and B is a non-conjugated and flexible chain, a π orbital stacked and conjugated chain self-assembled and ordered "secondary structure", and a donor/acceptor asymmetric layers sandwiched D/A columnar "tertiary structure". This structure is expected to improve photovoltaic power conversion efficiency significantly in comparison to most existing organic or polymeric donor/acceptor binary photovoltaic systems due to the reduction of "exciton loss", the "carrier loss", as well as the "photon loss" via three-dimensional space and energy level optimizations. Preliminary experimental results revealed better morphology and opto-electronic properties of DBAB vs. D/A blends.

Paper Details

Date Published: 12 May 2004
PDF: 11 pages
Proc. SPIE 5280, Materials, Active Devices, and Optical Amplifiers, (12 May 2004); doi: 10.1117/12.520570
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)
Abram J. Ledbetter, Norfolk State Univ. (United States)
Carl E. Bonner, Norfolk State Univ. (United States)

Published in SPIE Proceedings Vol. 5280:
Materials, Active Devices, and Optical Amplifiers
Connie J. Chang-Hasnain; Dexiu Huang; Yoshiaki Nakano; Xiaomin Ren, Editor(s)

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