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dc.contributor.authorSu, Ming-Shinen_US
dc.contributor.authorSu, Hai-Chingen_US
dc.contributor.authorKuo, Chih-Yinen_US
dc.contributor.authorZhou, Yi-Renen_US
dc.contributor.authorWei, Kung-Hwaen_US
dc.date.accessioned2014-12-08T15:37:50Z-
dc.date.available2014-12-08T15:37:50Z-
dc.date.issued2011en_US
dc.identifier.issn0959-9428en_US
dc.identifier.urihttp://hdl.handle.net/11536/26013-
dc.identifier.urihttp://dx.doi.org/10.1039/c0jm03550een_US
dc.description.abstractIn this study, we found that the formation of a p-i-n junction through in situ electrochemical doping is a promising way to enhance the performance of polymer photovoltaic devices. We applied a pre-bias to metal triflate [LiOTf, KOTf, Ca(OTf)(2), Zn(OTf)(2)]/poly(ethylene oxide) (PEO)-incorporated poly[5-(2'-ethylhexyloxy)-2-methoxy-1,4-phenylenevinylene] (MEH-PPV)/{6}-1-(3-(methoxycarbonyl) propyl)-{5}-1-phenyl-[5,6]-C(61) (PCBM) photovoltaic devices to form p-i-n junctions in their active layers. Auger depth profile analyses and alternating-current capacitance analyses of these doped devices revealed that the positive and negative ions were distributed unequally to form an asymmetrical p-i-n structure in a thin layer of ca. 100 nm of the polymer, and the intrinsic layer became thinner when formed under a higher pre-bias voltage. Atomic force microscopy and transmission electron microscopy revealed that the addition of metal triflate/PEO to MEH-PPV/PCBM improved the morphology of the composite films. Among the various doped devices, the MEH-PPV/PCBM device incorporating a LiOTf/PEO mixture exhibited the highest power conversion efficiency, a 40% increase relative to that of the reference device (MEH-PPV/PCBM).en_US
dc.language.isoen_USen_US
dc.titleIn situ electrochemical doping enhances the efficiency of polymer photovoltaic devicesen_US
dc.typeArticleen_US
dc.identifier.doi10.1039/c0jm03550een_US
dc.identifier.journalJOURNAL OF MATERIALS CHEMISTRYen_US
dc.citation.volume21en_US
dc.citation.issue17en_US
dc.citation.spage6217en_US
dc.citation.epage6224en_US
dc.contributor.department材料科學與工程學系zh_TW
dc.contributor.department照明與能源光電研究所zh_TW
dc.contributor.departmentDepartment of Materials Science and Engineeringen_US
dc.contributor.departmentInstitute of Lighting and Energy Photonicsen_US
dc.identifier.wosnumberWOS:000289524300017-
dc.citation.woscount8-
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