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Adv Mater. 2014 Apr 23;26(16):2586-91. doi: 10.1002/adma.201305092. Epub 2014 Feb 1.

Low band-gap conjugated polymers with strong interchain aggregation and very high hole mobility towards highly efficient thick-film polymer solar cells.

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  • 1Institute of Polymer Optoelectronic, Materials & Devices, State Key Laboratory of Luminescent Materials & Devices, South China University of Technology, Guangzhou, 510640, P. R. China.


Absorption spectra of polymer FBT-Th4 (1,4) (M n = 46.4 Kg/mol, E g = 1.62 eV, and HOMO = -5.36 eV) indicate strong interchain aggregation ability. High hole mobilities up to 1.92 cm(2) (V s)(-1) are demonstrated in OFETs fabricated under mild conditions. Inverted solar cells with active layer thicknesses ranging from 100 to 440 nm display PCEs exceeding 6.5%, with the highest efficiency of 7.64% achieved with a 230 nm thick active layer.

© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


fluorinated conjugated polymers; interchain aggregation; inverted polymer solar cells; organic field-effect transistors

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