Siloxane-Terminated Side Chain Engineering of Acceptor Polymers Leading to Over 7% Power Conversion Efficiencies in All-Polymer Solar Cells

Feng, S. Z.South China University of Technology,South China University of Technology, Peoples R China (författare)

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]
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.

Liu, C.South China University of Technology,South China University of Technology, Peoples R China (författare)
Xu, Xiaofeng,1984Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten,Chalmers University of Technology, Sweden(Swepub:liu)xiaxu02 (författare)
Liu, X. C.South China University of Technology,South China University of Technology, Peoples R China (författare)
Zhang, L. J.South China University of Technology,South China University of Technology, Peoples R China (författare)
Nian, Y. W.South China University of Technology,South China University of Technology, Peoples R China (författare)
Cao, Y.South China University of Technology,South China University of Technology, Peoples R China (författare)
Chen, J. W.South China University of Technology,South China University of Technology, Peoples R China (författare)
South China University of TechnologySouth China University of Technology, Peoples R China (creator_code:org_t)

Ingår i:ACS Macro Letters: American Chemical Society (ACS)6:11, s. 1310-13142161-1653

Av författaren/redakt...: Feng, S. Z.; Liu, C.; Xu, Xiaofeng, 19 ...; Liu, X. C.; Zhang, L. J.; Nian, Y. W.; visa fler...; Cao, Y.; Chen, J. W.; visa färre...

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