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Yoo-Yong Lee, Ji-Hoon Lee, Ju-Young Cho, Na-Rae Kim, Dae-Hyun Nam, In-Suk Choi, Ki Tae Nam and Young-Chang Joo Stretching-Induced Growth of PEDOT-Rich Cores: A New Mechanism for Strain-Dependent Resistivity Change in PEDOT:PSS Films Advanced Functional Materials 23

Article first published online: 15 MAR 2013 | DOI: 10.1002/adfm.201203670

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Tensile strain-resistivity response of poly(3,4-ethylenedioxythiophene):poly (styrenesulfonate) (PEDOT:PSS) films is investigated according to doping with dimethylsulfoxide (DMSO) up to 60% strain without crack generation. The resistivity can be modulated under strain from invariant values to decreasing values up to 80%. The growth of conductive PEDOT-rich cores is the primary mechanism for the decrease in resistivity induced by applied strain.

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