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Article: Enhancing the Efficiency of Polymer Solar Cells by Incorporation of 2,5-Difluorobenzene Units into the Polymer Backbone via Random Copolymerization

TitleEnhancing the Efficiency of Polymer Solar Cells by Incorporation of 2,5-Difluorobenzene Units into the Polymer Backbone via Random Copolymerization
Authors
Keywordsconjugated polymers
random copolymerization
polymer solar cells
2,5-difluorobenzene
fluorinated benzothiadiazole
crystallinity
Issue Date2017
Citation
ACS Applied Materials and Interfaces, 2017, v. 9, n. 28, p. 23775-23781 How to Cite?
Abstract© 2017 American Chemical Society. A series of conjugated polymers P0, P5, and P7 containing 0, 5, and 7 mol % 2,5-difluorobenzene units, respectively, were prepared and utilized as electron donors in polymer solar cells. Incorporation of a small amount of 2,5-difluorobenzene unit into the backbone of donor polymers can significantly increase their planarity and crystallinity as well as decrease their solubility. The improved molecular conformation can markedly affect the morphology of polymer:PC71BM blend films. After incorporation of 5 mol % 2,5-difluorobenzene unit into the backbone of donor polymers, the domain size of blend films became smaller and the hole mobility increased. Increasing the content of 2,5-difluorobenzene to 7 mol % can further decrease the solubility of resulting polymers and resulted in poor solution processability. As a result, P5-based devices achieved a power conversion efficiency (PCE) of 8.5%, whereas P0 based devices gave a PCE of 7.8%.
Persistent Identifierhttp://hdl.handle.net/10722/288866
ISSN
2019 Impact Factor: 8.758
2015 SCImago Journal Rankings: 2.381

 

DC FieldValueLanguage
dc.contributor.authorZhang, Zhe-
dc.contributor.authorLiu, Yahui-
dc.contributor.authorZhang, Jicheng-
dc.contributor.authorFeng, Shiyu-
dc.contributor.authorWu, Liangliang-
dc.contributor.authorGong, Xue-
dc.contributor.authorXu, Xinjun-
dc.contributor.authorChen, Xuebo-
dc.contributor.authorBo, Zhishan-
dc.date.accessioned2020-10-12T08:06:05Z-
dc.date.available2020-10-12T08:06:05Z-
dc.date.issued2017-
dc.identifier.citationACS Applied Materials and Interfaces, 2017, v. 9, n. 28, p. 23775-23781-
dc.identifier.issn1944-8244-
dc.identifier.urihttp://hdl.handle.net/10722/288866-
dc.description.abstract© 2017 American Chemical Society. A series of conjugated polymers P0, P5, and P7 containing 0, 5, and 7 mol % 2,5-difluorobenzene units, respectively, were prepared and utilized as electron donors in polymer solar cells. Incorporation of a small amount of 2,5-difluorobenzene unit into the backbone of donor polymers can significantly increase their planarity and crystallinity as well as decrease their solubility. The improved molecular conformation can markedly affect the morphology of polymer:PC71BM blend films. After incorporation of 5 mol % 2,5-difluorobenzene unit into the backbone of donor polymers, the domain size of blend films became smaller and the hole mobility increased. Increasing the content of 2,5-difluorobenzene to 7 mol % can further decrease the solubility of resulting polymers and resulted in poor solution processability. As a result, P5-based devices achieved a power conversion efficiency (PCE) of 8.5%, whereas P0 based devices gave a PCE of 7.8%.-
dc.languageeng-
dc.relation.ispartofACS Applied Materials and Interfaces-
dc.subjectconjugated polymers-
dc.subjectrandom copolymerization-
dc.subjectpolymer solar cells-
dc.subject2,5-difluorobenzene-
dc.subjectfluorinated benzothiadiazole-
dc.subjectcrystallinity-
dc.titleEnhancing the Efficiency of Polymer Solar Cells by Incorporation of 2,5-Difluorobenzene Units into the Polymer Backbone via Random Copolymerization-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/acsami.7b05787-
dc.identifier.pmid28661655-
dc.identifier.scopuseid_2-s2.0-85024851926-
dc.identifier.volume9-
dc.identifier.issue28-
dc.identifier.spage23775-
dc.identifier.epage23781-
dc.identifier.eissn1944-8252-

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