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dc.contributor.authorCao, Fong-Yien_US
dc.contributor.authorLai, Yu-Yingen_US
dc.contributor.authorChen, Yung-Lungen_US
dc.contributor.authorCheng, Yen-Juen_US
dc.date.accessioned2017-04-21T06:56:33Z-
dc.date.available2017-04-21T06:56:33Z-
dc.date.issued2016-06-14en_US
dc.identifier.issn2050-7488en_US
dc.identifier.urihttp://dx.doi.org/10.1039/c6ta01983hen_US
dc.identifier.urihttp://hdl.handle.net/11536/133929-
dc.description.abstractNon-conjugated triethylene glycol (3-EG), tetraethylene glycol (4-EG) and pentaethylene glycol (5-EG) are presented as new cathode modification materials to achieve high-performance inverted-PCSs. By spin-coating from a non-chlorinated solvent, these small molecules can self-assemble on ITO via surface coordination and hydrogen bonding to form an ultra-thin layer. Theoretical simulations reveal that the coordination of oxygen atoms in the EG molecules to indium moieties on the ITO surface is the major mechanism in inducing interfacial dipoles, thereby reducing the work function (W-F) of ITO for efficient electron collection. Based on the PBDTTT-EFT:PC71BM blend, the bulk heterojunction device using the 5-EG layer exhibited a higher short-circuit current density (J(sc)) of 15.27 mA cm(-2), fill factor (FF) of 0.69, and power conversion efficiency (PCE) of 8.46%, which are better than those of the corresponding devices using either inorganic ZnO or non-conjugated poly(ethylene oxide) (PEO) as the cathode buffer layer. More importantly, this simple and expedited strategy is also demonstrated to be universally applicable to various p-type conjugated polymers. The EG oligomers with well-defined chemical structures have the advantages of easy availability, simple processability and good device reproducibility, which are crucial keys for future commercialization using large-scale roll-to-roll production.en_US
dc.language.isoen_USen_US
dc.titleSelf-assembled tri-, tetra- and penta-ethylene glycols as easy, expedited and universal interfacial cathode-modifiers for inverted polymer solar cellsen_US
dc.identifier.doi10.1039/c6ta01983hen_US
dc.identifier.journalJOURNAL OF MATERIALS CHEMISTRY Aen_US
dc.citation.volume4en_US
dc.citation.issue22en_US
dc.citation.spage8707en_US
dc.citation.epage8715en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.identifier.wosnumberWOS:000378583200024en_US
Appears in Collections:Articles