Poly(3-hexylthiophene) Grafting and Molecular Dilution: Study of a Class of Conjugated Graft Copolymers
| Autor: | Tomasz Jarosz, Kinga Kepska, Agnieszka Stolarczyk, Wojciech Domagala, Marcin Procek, Przemyslaw Ledwon |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Band gap Doping molecular dilution General Chemistry Polymer poly(3-hexylthiophene) Conjugated system Grafting Polaron Article Polymer solar cell lcsh:QD241-441 lcsh:Organic chemistry functionalized conducting polymers chemistry Chemical engineering graft copolymers Copolymer |
| Zdroj: | Polymers Volume 11 Issue 2 Polymers, Vol 11, Iss 2, p 205 (2019) |
| ISSN: | 2073-4360 |
| DOI: | 10.3390/polym11020205 |
| Popis: | A type of graft copolymer based on polysiloxane and regioregular poly(3-hexylthiophene) (P3HT) has been synthesised and its properties have been studied alongside those of its parent conjugated polymer&mdash regioregular P3HT. Electrochemical analysis has revealed more significant changes in conformation of the copolymer film than was observed for P3HT. UV-Vis-NIR spectroelectrochemical investigation provided evidence of improved doping reversibility of the copolymer, despite its marginally increased band gap, as also confirmed by electroconductometric analysis. Evidence has been shown, indicating that polaron mobilities in both P3HT and the copolymer are higher than those of bipolaronic charge carriers, even though both systems exhibit standard doping/dedoping patterns. The grafted copolymer was tested in bulk heterojunction solar cells. Preliminary studies show a great potential of these polymers for application in photovoltaics. Power conversion efficiency of up to 2.46% was achieved despite the dilution of the P3HT chains in the copolymer. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|