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dc.contributor.authorAmbre, Ram B.en_US
dc.contributor.authorChang, Gao-Fongen_US
dc.contributor.authorZanwar, Manoj R.en_US
dc.contributor.authorYao, Ching-Faen_US
dc.contributor.authorDiau, Eric Wei-Guangen_US
dc.contributor.authorHung, Chen-Hsiungen_US
dc.date.accessioned2014-12-08T15:33:05Z-
dc.date.available2014-12-08T15:33:05Z-
dc.date.issued2013-09-01en_US
dc.identifier.issn1861-4728en_US
dc.identifier.urihttp://dx.doi.org/10.1002/asia.201300328en_US
dc.identifier.urihttp://hdl.handle.net/11536/23035-
dc.description.abstractA series of porphyrin sensitizers that featured two electron-donating groups and dual anchoring groups that were connected through a porphine -bridging unit have been synthesized and successfully applied in dye-sensitized solar cells (DSSCs). The presence of electron-donating groups had a significant influence on their spectroscopic, electrochemical, and photovoltaic properties. Overall, the dual anchoring groups gave tunable electronic properties and stronger attachment to TiO2. These new dyes were readily synthesized in a minimum number of steps in gram-scale quantities. Optical and electrochemical data confirmed the advantages of these dyes for use as sensitizers in DSSCs. Porphyrins with electron-donating amino moieties provided improved charge separation and better charge-injection efficiencies for the studied dual-push-pull dyes. Attenuated total reflectance-Fourier-transform infrared (ATR-FTIR) and X-ray photoelectron spectroscopy of the porphyrin dyes on TiO2 suggest that both p-carboxyphenyl groups are attached onto TiO2, thereby resulting in strong attachment. Among these dyes, cis-Zn2BC2A, with two electron-donating 3,6-ditertbutyl-phenyl-carbazole groups and dual-anchoring p-carboxyphenyl groups, showed the highest efficiency of 4.07%, with JSC=9.81mAcm-2, VOC=0.63V, and FF=66%. Our results also indicated a better photostability of the studied dual-anchored sensitizers compared to their mono-anchored analogues under identical conditions. These results provide insight into the developments of a new generation of high-efficiency and thermally stable porphyrin sensitizers.en_US
dc.language.isoen_USen_US
dc.subjectdonor-acceptor systemsen_US
dc.subjectdyesen_US
dc.subjectpigmentsen_US
dc.subjectporphyrinsen_US
dc.subjectsensitizersen_US
dc.subjectsolar cellsen_US
dc.titleNew Dual Donor-Acceptor (2D--2A) Porphyrin Sensitizers for Stable and Cost-Effective Dye-Sensitized Solar Cellsen_US
dc.typeArticleen_US
dc.identifier.doi10.1002/asia.201300328en_US
dc.identifier.journalCHEMISTRY-AN ASIAN JOURNALen_US
dc.citation.volume8en_US
dc.citation.issue9en_US
dc.citation.spage2144en_US
dc.citation.epage2153en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.department應用化學系分子科學碩博班zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.contributor.departmentInstitute of Molecular scienceen_US
dc.identifier.wosnumberWOS:000325928700027-
dc.citation.woscount14-
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