Self-Assembly of Poly(3-hexylthiophene)-block-polylactide Block Copolymer and Subsequent Incorporation of Electron Acceptor Material
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- 作者：Ioan Botiz ; Seth B. Darling
- 刊名：Macromolecules
- 出版年：2009
- 出版时间：November 10, 2009
- 年：2009
- 卷：42
- 期：21
- 页码：8211-8217
- 全文大小：1022K
- 年卷期：v.42,no.21(November 10, 2009)
- ISSN：1520-5835
文摘
It is commonly accepted that in order to develop high-performance organic and/or hybrid organic−inorganic solar energy devices, it is necessary to use, among other components, an active donor−acceptor layer with highly ordered nanoscale morphology. In an idealized morphology, the effectiveness of internal processes including exciton generation and separation and charge carrier migration is optimized, leading to an efficient conversion of photons to electricity. With this idea in mind, we have rationally designed and developed an ordered nanoscale morphology consisting of self-assembled poly(3-hexylthiophene) donor domains of molecular dimension, each of them separated by fullerene C60 hydroxide acceptor domains. A poly(3-hexylthiophene)-block-poly(l-lactide) block copolymer was used as a structure-directing agent to pattern active material into ordered nanostructures. Using this intimate morphological control, one can begin to probe structure−property relationships with unprecedented detail with the ultimate goal of maximizing the performance of future organic/hybrid photovoltaic devices.