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6 February 2004 Design and development of conjugated block copolymers for use in photovoltaic devices
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Abstract
A novel tertiary nano structured photovoltaic device has been designed and preliminarily examined by recent development of target block copolymers. The unique feature of the device includes a -D(donor)-B(bridge)-A(acceptor)-B(bridge)- type of block copolymer primary structure, 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 device is expected to improve photovoltaic power conversion efficiency significantly in comparison to existing organic based donor/acceptor binary photovoltaic devices 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.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Sam-Shajing Sun "Design and development of conjugated block copolymers for use in photovoltaic devices", Proc. SPIE 5215, Organic Photovoltaics IV, (6 February 2004); https://doi.org/10.1117/12.505399
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