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Siloxane-Terminated Side Chain Engineering of Acceptor Polymers Leading to Over 7% Power Conversion Efficiencies in All-Polymer Solar Cells
South China University of Technology, Peoples R China.
South China University of Technology, Peoples R China.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering. Chalmers University of Technology, Sweden.
South China University of Technology, Peoples R China.
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2017 (English)In: ACS Macro Letters, E-ISSN 2161-1653, Vol. 6, no 11, p. 1310-1314Article in journal (Refereed) Published
Abstract [en]

To investigate the influence of functional pendent groups on acceptor polymers and photovoltaic properties of all-polymer solar cells (all-PSCs), two novel acceptor polymers containing siloxane-terminated side chains are synthesized and characterized. Increasing the content of siloxane-terminated side chains can reduce pi-pi stacking distance and improve crystalline behavior, yet lead to poorer solubility of the acceptor polymers. By modulating the proper loadings of siloxane-terminated side chains on the acceptor polymers, the PBDB-T:PNDI-Si25 all-PSC attains a maximal power conversion efficiency (PCE) of 7.4% with an outstanding fill factor of 0.68. The results provide, new insights for developing high-performance all-PSCs through functional group engineering on the acceptor polymers, to achieve good solubility, polymer miscibility, and blend morphology.

Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2017. Vol. 6, no 11, p. 1310-1314
National Category
Polymer Technologies
Identifiers
URN: urn:nbn:se:liu:diva-143737DOI: 10.1021/acsmacrolett.7b00738ISI: 000416500000025OAI: oai:DiVA.org:liu-143737DiVA: diva2:1166708
Note

Funding Agencies|National Natural Science Foundation of China [U1401244, 21225418, 51521002, 91633301]; National Basic Research Program of China (973 program) [2014CB643S05]; Natural Science Foundation of Guangdong Province [2016A030312002]; GDUPS; Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]

Available from: 2017-12-15 Created: 2017-12-15 Last updated: 2017-12-15

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