Please use this identifier to cite or link to this item: https://doi.org/10.1039/c1ee02475b
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dc.titleHighly conductive poly(3,4-ethylenedioxythiophene):Poly(styrene sulfonate) films treated with an amphiphilic fluoro compound as the transparent electrode of polymer solar cells
dc.contributor.authorXia, Y.
dc.contributor.authorSun, K.
dc.contributor.authorOuyang, J.
dc.date.accessioned2014-10-07T09:50:21Z
dc.date.available2014-10-07T09:50:21Z
dc.date.issued2012-01
dc.identifier.citationXia, Y., Sun, K., Ouyang, J. (2012-01). Highly conductive poly(3,4-ethylenedioxythiophene):Poly(styrene sulfonate) films treated with an amphiphilic fluoro compound as the transparent electrode of polymer solar cells. Energy and Environmental Science 5 (1) : 5325-5332. ScholarBank@NUS Repository. https://doi.org/10.1039/c1ee02475b
dc.identifier.issn17545692
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/86408
dc.description.abstractFlexible transparent electrode materials are strongly needed for optoelectronic devices. We report a novel method to significantly enhance the conductivity of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) films through treatment with a fluoro compound, hexafluoroacetone (HFA). HFA hydrolyzes with water into a geminal diol, 1,1,1,3,3,3- hexafluoropropane-2,2-diol (HFP2OH) that has two -OH groups connected to the middle carbon atom. The conductivity increased from 0.3 to 1164 and 1325 S cm -1 after the treatment with HFA once and four times, respectively. The highly conductive HFA-treated PEDOT:PSS films can have a sheet resistances of 46 Ω □ -1 and a transparency of around 83% at 550 nm. These values are comparable to those of indium tin oxide (ITO) on polyethylene terephthalate (PET). The conductivity enhancement is attributed to the HFP2OH-induced phase segregation of some hydrophilic PSSH chains from PEDOT:PSS and the conformational change of the conductive PEDOT chains, driven by the interactions between amphiphilic HFP2OH and PEDOT:PSS. The hydrophobic -CF 3 groups of HFP2OH preferentially interact with the hydrophobic PEDOT chains of PEDOT:PSS, while the hydrophilic -OH groups preferentially interact with hydrophilic PSS chains. The highly conductive PEDOT:PSS films were used to replace ITO as the transparent anode of polymer solar cells. Polymer solar cells based on poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C 61-butyric acid methyl ester (PCBM) exhibited a photovoltaic efficiency of 3.57% under simulated AM1.5G illumination, comparable to the control devices with ITO as the anode. © 2011 The Royal Society of Chemistry.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1039/c1ee02475b
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentMATERIALS SCIENCE AND ENGINEERING
dc.description.doi10.1039/c1ee02475b
dc.description.sourcetitleEnergy and Environmental Science
dc.description.volume5
dc.description.issue1
dc.description.page5325-5332
dc.identifier.isiut000299046100023
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