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.
| Original language | English |
|---|---|
| Pages (from-to) | 9745-9751 |
| Number of pages | 7 |
| Journal | Journal of Materials Chemistry A |
| Volume | 5 |
| Issue number | 20 |
| DOIs | |
| Publication status | Published - 2017 |
Bibliographical note
Funding Information:This research was supported by the National Research Foundation of Korea (NRF2012R1A2A1A01008797) and by the Key Research Institute Program (NRF20100020209). GIWAXS measurements were performed using PLS-II 9A USAXS Beam line at the Pohang Accelerator Laboratory (Pohang, Korea). We thank KBSI for allowing the use of their HRTEM instrument.
Publisher Copyright:
© 2017 The Royal Society of Chemistry.
ASJC Scopus subject areas
- General Chemistry
- Renewable Energy, Sustainability and the Environment
- General Materials Science
