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Article: Vinylene- and ethynylene-bridged perylene diimide dimers as nonfullerene acceptors for polymer solar cells

TitleVinylene- and ethynylene-bridged perylene diimide dimers as nonfullerene acceptors for polymer solar cells
Authors
KeywordsPerylene diimide dimers
Nonfullerene acceptors
Polymer solar cells
Linkage
Issue Date2017
Citation
Dyes and Pigments, 2017, v. 146, p. 143-150 How to Cite?
Abstract© 2017 Elsevier Ltd Vinylene (V)- and ethynylene (E)-bridged perylene diimide dimers (PDI-V and PDI-E) were designed, synthesized and used as nonfullerene acceptors for polymer solar cells. Our researches revealed that the linkage between two PDI units has a great impact on the molecular geometry, the optical properties, the blend film morphology, the molecular packing orientation, and the photovoltaic performance. Computational calculations via density functional theory (DFT) showed that PDI-E and PDI-V possessed planar and twisted geometric structures, respectively. TEM investigations showed that PTB7-Th:PDI-V based blend film exhibited a uniform morphology with small domain size and PTB7-Th:PDI-E based one showed apparent phase separation with large domain size. GIWAXS results revealed that the PDI-V can influence PTB7-Th to take on a face-on orientation, which is beneficial for vertical charge transport to increase Jsc. A PCE of 4.51% with a Voc of 0.76 V, a Jsc of 10.03 mA cm−2, and an FF of 0.59 was obtained for PSCs based on PTB7-Th:PDI-V, which is almost two times higher than that of PTB7-Th:PDI-E based devices, which showed a PCE of 2.66%, a Voc of 0.66 V, a Jsc of 7.33 mA cm−2, and an FF of 0.55. These results help to gain deeper insight into the design of new nonfullerene small molecular acceptors for high efficiency PSCs.
Persistent Identifierhttp://hdl.handle.net/10722/288861
ISSN
2019 Impact Factor: 4.613
2015 SCImago Journal Rankings: 1.011

 

DC FieldValueLanguage
dc.contributor.authorXie, Sufei-
dc.contributor.authorZhang, Jicheng-
dc.contributor.authorWu, Liangliang-
dc.contributor.authorZhang, Jianqi-
dc.contributor.authorLi, Cuihong-
dc.contributor.authorChen, Xuebo-
dc.contributor.authorWei, Zhixiang-
dc.contributor.authorBo, Zhishan-
dc.date.accessioned2020-10-12T08:06:04Z-
dc.date.available2020-10-12T08:06:04Z-
dc.date.issued2017-
dc.identifier.citationDyes and Pigments, 2017, v. 146, p. 143-150-
dc.identifier.issn0143-7208-
dc.identifier.urihttp://hdl.handle.net/10722/288861-
dc.description.abstract© 2017 Elsevier Ltd Vinylene (V)- and ethynylene (E)-bridged perylene diimide dimers (PDI-V and PDI-E) were designed, synthesized and used as nonfullerene acceptors for polymer solar cells. Our researches revealed that the linkage between two PDI units has a great impact on the molecular geometry, the optical properties, the blend film morphology, the molecular packing orientation, and the photovoltaic performance. Computational calculations via density functional theory (DFT) showed that PDI-E and PDI-V possessed planar and twisted geometric structures, respectively. TEM investigations showed that PTB7-Th:PDI-V based blend film exhibited a uniform morphology with small domain size and PTB7-Th:PDI-E based one showed apparent phase separation with large domain size. GIWAXS results revealed that the PDI-V can influence PTB7-Th to take on a face-on orientation, which is beneficial for vertical charge transport to increase Jsc. A PCE of 4.51% with a Voc of 0.76 V, a Jsc of 10.03 mA cm−2, and an FF of 0.59 was obtained for PSCs based on PTB7-Th:PDI-V, which is almost two times higher than that of PTB7-Th:PDI-E based devices, which showed a PCE of 2.66%, a Voc of 0.66 V, a Jsc of 7.33 mA cm−2, and an FF of 0.55. These results help to gain deeper insight into the design of new nonfullerene small molecular acceptors for high efficiency PSCs.-
dc.languageeng-
dc.relation.ispartofDyes and Pigments-
dc.subjectPerylene diimide dimers-
dc.subjectNonfullerene acceptors-
dc.subjectPolymer solar cells-
dc.subjectLinkage-
dc.titleVinylene- and ethynylene-bridged perylene diimide dimers as nonfullerene acceptors for polymer solar cells-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.dyepig.2017.06.049-
dc.identifier.scopuseid_2-s2.0-85021713926-
dc.identifier.volume146-
dc.identifier.spage143-
dc.identifier.epage150-
dc.identifier.eissn1873-3743-

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