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dc.contributor.authorTsai, Che-Enen_US
dc.contributor.authorLiao, Ming-Hungen_US
dc.contributor.authorChen, Yung-Lungen_US
dc.contributor.authorCheng, Sheng-Wenen_US
dc.contributor.authorLai, Yu-Yingen_US
dc.contributor.authorCheng, Yen-Juen_US
dc.contributor.authorHsu, Chain-Shuen_US
dc.date.accessioned2015-12-02T02:59:14Z-
dc.date.available2015-12-02T02:59:14Z-
dc.date.issued2015-01-01en_US
dc.identifier.issn2050-7526en_US
dc.identifier.urihttp://dx.doi.org/10.1039/c5tc00714cen_US
dc.identifier.urihttp://hdl.handle.net/11536/127953-
dc.description.abstractA triarylamine-based material DVTPD containing two styryl groups has been developed. Upon isothermal heating at 180 degrees C for 30 min, DVTPD can be thermally cross-linked to form a solvent-resistant layer to realize the fabrication of solution-processed multilayer devices. The crosslinked DVTPD (denoted as X-DVTPD) layer possesses not only hole-collecting ability (HOMO = -5.3 eV) but also electron-blocking capability (LUMO = -2.2 eV). By incorporation of an ionic dopant, 4-isopropyl-4\'-methyldiphenyliodonium tetrakis(pentafluorophenylborate) (DPITPFB), into the X-DVTPD material (1 : 10 in wt%), a favourable morphology of the dopant/matrix layer was formed and the hole-mobility is significantly improved by three orders of magnitude compared to its non-doped state. This DPITPFB : X-DVTPD (1 : 10 in wt%) layer was employed as the hole-transporting layer to fabricate polymer solar cell devices (PSCs). The E-HOMO of the polymer in the active layer relative to the E-HOMO of the X-DVTPD (-5.3 eV) governs the hole transportation highly associated with the device performance. The higher-lying E-HOMO (-5.0 eV) of P3HT causes a large energy barrier for the hole transportation at the interface, leading to an unsatisfactory efficiency. The E-HOMO level of the PTB7 copolymer (-5.15 eV) is closer to -5.3 eV. As a result, the PTB7-based device can achieve 80% of the efficiency obtained from the corresponding PEDOT:PSS-based device. Furthermore, the PBDCPDTFBT copolymer has the same E-HOMO (-5.3 eV) with X-DVTPD. Consequently, the PBDCPDTFBT-based device showed a comparable efficiency of 5.3% to the corresponding PEDOT: PSS-based device. More importantly, PNDTDTFBT having the lowest-lying E-HOMO of -5.4 eV exhibits superior performance with a high PCE of 6.64%, outperforming its reference PEDOT: PSS-based device. This simple and useful hole-transporting system integrating the crosslinking and doping strategies to replace PEDOT:PSS can be widely used in solution-processed organic electronic devices.en_US
dc.language.isoen_USen_US
dc.titleTriarylamine-based crosslinked hole-transporting material with an ionic dopant for high-performance PEDOT:PSS-free polymer solar cellsen_US
dc.typeArticleen_US
dc.identifier.doi10.1039/c5tc00714cen_US
dc.identifier.journalJOURNAL OF MATERIALS CHEMISTRY Cen_US
dc.citation.issue24en_US
dc.citation.spage6158en_US
dc.citation.epage6165en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.identifier.wosnumberWOS:000356307800005en_US
dc.citation.woscount1en_US
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