Abstract
The two new semiconducting polymers, poly((sexithiophene-5,5'''''-diyl)bis(tridecan-1-one))(PSTTO) and poly((sexithiophene-5,5'''''-diyl)bis(tridecan-1-one)bithiophene) (PSTTOBT), are synthesized and characterized. PSTTO and PSTTOBT have backbone donor and side chain acceptor structure. Compare to poly(3-hexylthiophene), both polymers had deep HOMO levels of 5.15 and 5.14 eV, respectively, due to intramolecular repulsing between the main chain and side chain as well as the introduction of electron withdrawing side chains. In addition, the introduction of bithiophene into the repeating unit of PSTTOBT showed increased long wave absorption and better intermolecular interaction. PSTTO and PSTTOBT based cell showed power conversion efficiencies of 1.1% and 1.6%, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 76-85 |
| Number of pages | 10 |
| Journal | Molecular Crystals and Liquid Crystals |
| Volume | 733 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2022 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- long wave absorption
- Organic photovoltaic
- semiconducting polymers
- side chain effect
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