Head-to-Head Linkage Containing Bithiophene-Based Polymeric Semiconductors for Highly Efficient Polymer Solar Cells

Head-to-Head Linkage Containing Bithiophene-Based Polymeric Semiconductors for Highly Efficient Polymer Solar Cells

Narrow bandgap (1.37–1.46 eV) polymers incorporating a head‐to‐head linkage containing 3‐alkoxy‐3′‐alkyl‐2,2′‐bithiophene are synthesized. The head‐to‐head linkage enables polymers with sufficient solubility and the noncovalent sulfur–oxygen interaction affords polymers with high degree of backbone...

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Veröffentlicht in:Advanced materials (Weinheim) 2016-12, Vol.28 (45), p.9969-9977
Hauptverfasser: Shi, Shengbin, Liao, Qiaogan, Tang, Yumin, Guo, Han, Zhou, Xin, Wang, Yulun, Yang, Tingbin, Liang, Yongye, Cheng, Xing, Liu, Feng, Guo, Xugang
Format: Artikel
Sprache:eng
Schlagworte:
Energy conversion efficiency
Energy gaps (solid state)
film morphology
Linkages
organic electronics
Photovoltaic cells
polymer semiconductors
polymer solar cells
Semiconductors
Solar cells
Solubility
sulfur-oxygen interactions
Synthesis (chemistry)
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Zusammenfassung:Narrow bandgap (1.37–1.46 eV) polymers incorporating a head‐to‐head linkage containing 3‐alkoxy‐3′‐alkyl‐2,2′‐bithiophene are synthesized. The head‐to‐head linkage enables polymers with sufficient solubility and the noncovalent sulfur–oxygen interaction affords polymers with high degree of backbone planarity and film ordering. When integrated into polymer solar cells, the polymers show a promising power conversion efficiency approaching 10%.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201603112