Mixed-flow design for microfluidic printing of two-component polymer semiconductor systemsShow others and affiliations
2020 (English)In: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, Vol. 117, no 30, p. 17551-17557Article in journal (Refereed) Published
Abstract [en]
The rational creation of two-component conjugated polymer sys-tems with high levels of phase purity in each component is challenging but crucial for realizing printed soft-matter electronics. Here, we report a mixed-flow microfluidic printing (MFMP) approach for two-component pi-polymer systems that significantly elevates phase purity in bulk-heterojunction solar cells and thin-film transistors. MFMP integrates laminar and extensional flows using a specially microstructured shear blade, designed with fluid flow simulation tools to tune the flow patterns and induce shear, stretch, and pushout effects. This optimizes polymer conformation and semi-conducting blend order as assessed by atomic force microscopy (AFM), transmission electron microscopy (TEM), grazing incidence wide-angle X-ray scattering (GIWAXS), resonant soft X-ray scattering (R-SoXS), photovoltaic response, and field effect mobility. For printed all-polymer (poly[(5,6-difluoro-2-octyl-2H-benzotriazole-4,7-diyl)-2,5-thiophenediyl[4,8-bis[5-(2-hexyldecyl)-2-thienyl]benzo[1,2-b:4,5-b ]dithiophene-2,6-diyl]-2,5-thiophenediyl]) [J51]:(poly{[N,N -bis(2-octyldodecyl) naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,5 -(2,2 -bithio-phene)}) [N2200]) solar cells, this approach enhances short-circuit currents and fill factors, with power conversion efficiency increasing from 5.20% for conventional blade coating to 7.80% for MFMP. Moreover, the performance of mixed polymer ambipolar [poly(3-hexylthiophene-2,5-diyl) (P3HT):N2200] and semiconducting:insulat-ing polymer unipolar (N2200:polystyrene) transistors is similarly enhanced, underscoring versatility for two-component pi-polymer systems. Mixed-flow designs offer modalities for achieving high-performance organic optoelectronics via innovative printing methodologies.
Place, publisher, year, edition, pages
NATL ACAD SCIENCES , 2020. Vol. 117, no 30, p. 17551-17557
Keywords [en]
mixed-flow design; phase purity; two component; semiconducting polymer; printed electronics
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Other Physics Topics
Identifiers
URN: urn:nbn:se:liu:diva-168271DOI: 10.1073/pnas.2000398117ISI: 000555851800019PubMedID: 32647062OAI: oai:DiVA.org:liu-168271DiVA, id: diva2:1459917
Note
Funding Agencies|Center for Light Energy Activated Redox Processes, an Energy Frontier Research Center - US Department of Energy (DOE), Office of Science, Office of Basic Energy SciencesUnited States Department of Energy (DOE) [DE-SC0001059]; US Department of Commerce, National Institute of Standards and Technology Award, Center for Hierarchical Materials Design [70NANB14H012]; Air Force Office of Scientific Research (AFOSR) GrantUnited States Department of DefenseAir Force Office of Scientific Research (AFOSR) [FA9550-18-18-1-0320]; Office of Naval Research ContractOffice of Naval Research [N00014-20-1-2116]; US DOEUnited States Department of Energy (DOE) [DE-AC02-06CH11357]; Office of Science, Office of Basic Energy Sciences of the US DOEUnited States Department of Energy (DOE) [DE-AC02-05CH11231]; Soft and Hybrid Nanotechnology Experimental Resource (NSF Grant) [NNCI-1542205]; Materials Research Science and Engineering Centers (MRSEC) program (NSF Grant) at the Materials Research Center [DMR-1121262]; International Institute for Nanotechnology (IIN); Keck FoundationW.M. Keck Foundation; State of Illinois through the IIN; Program for Professors of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning; Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities; Young Elite Scientists Sponsorship Program by China Association for Science and Technology (CAST); Natural Science Foundation of Shanghai Grant [19ZR1470900]; Shanghai Institute of Organic Chemistry; Jiangsu Aosaikang Pharmaceutical Co., Ltd.; Swedish Governmental Agency for Innovation Systems (VINNOVA) Grant [2015-04859]; Swedish Research Council GrantSwedish Research Council [2016-03979]; National Natural Science Foundation of China GrantNational Natural Science Foundation of China [51733002]; Innovation Program of Shanghai Municipal Education Commission Grant [E0055]
2020-08-212020-08-212020-08-21