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Issue 20, 2017
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(D)n–σ–(A)m type partially conjugated block copolymer and its performance in single-component polymer solar cells

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Abstract

We synthesized two types of novel poly(3-alkylthiophene)-free (D)n-b-(A)m conjugated block copolymers: PTQI-block-PNDISs. PTQI-b-PNDIS is the fully conjugated block copolymer, in which the donor block is connected to the acceptor block via a π-conjugated unit. In addition, the donor block was connected to an acceptor block through a non-conjugated alkylene spacer, yielding PTQI-b-PNDISL, which is a partially conjugated block copolymer. The power conversion efficiency (PCE) was 1.54% with an open-circuit voltage of 0.79 V in the single-component polymer solar cell (PSC) based on PTQI-b-PNDISL, better performance than that of the PSC containing PTQI-b-PNDIS (PCE ∼ 0.36%). These results reveal the potential for improving the photovoltaic performance in PSCs by controlling the internal morphology with exploitation of the self-segregating behavior of p- and n-blocks in the film state.

Graphical abstract: (D)n–σ–(A)m type partially conjugated block copolymer and its performance in single-component polymer solar cells

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Publication details

The article was received on 28 Feb 2017, accepted on 24 Apr 2017 and first published on 25 Apr 2017


Article type: Paper
DOI: 10.1039/C7TA01819C
Citation: J. Mater. Chem. A, 2017,5, 9745-9751
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    (D)n–σ–(A)m type partially conjugated block copolymer and its performance in single-component polymer solar cells

    D. H. Lee, J. H. Lee, H. J. Kim, S. Choi, G. E. Park, M. J. Cho and D. H. Choi, J. Mater. Chem. A, 2017, 5, 9745
    DOI: 10.1039/C7TA01819C

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