Cyclopentadithiophene-based Co-oligomers for Solution-processed Organic Solar Cells
A new family of low band-gap co-oligomers based on 4H-cyclopenta[2,1-b:3,4-b']dithiophene (CPDT) and thieno[3,2-b]thiophene (TT) units as central electron-donor cores has been synthesized and characterized for use as electron-donor materials in solution-processed bulk-heterojunction organic sol...
| Authors: | , , , , |
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| Format: | article |
| Publication Date: | 2017 |
| Country: | España |
| Institution: | Universidad de Castilla-La Mancha |
| Repository: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:ruidera.uclm.es:10578/13697 |
| Online Access: | http://hdl.handle.net/10578/13697 |
| Access Level: | Open access |
| Keyword: | Cyclopentadithiophene-based Co-oligomers Solution-processed organic solar cells Organic solar cells |
| Summary: | A new family of low band-gap co-oligomers based on 4H-cyclopenta[2,1-b:3,4-b']dithiophene (CPDT) and thieno[3,2-b]thiophene (TT) units as central electron-donor cores has been synthesized and characterized for use as electron-donor materials in solution-processed bulk-heterojunction organic solar cells. An in-depth study into the role played by the hexyl chains 5 linked to the thienylenevinylene-based π-bridge has been carried out. Power conversion efficiencies (PCE) of up to 4% and external quantum efficiencies as high as 50% have been achieved. Experiments carried out after solvent vapor annealing (SVA) as a post-treatment led to a doubling of the fill factor (FF) and PCE. |
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