title: Toward interaction of sensitizer and functional moieties in hole-transporting materials for efficient semiconductor-sensitized solar cells.
abstract: Sb(2)S(3)-sensitized mesoporous-TiO(2) solar cells using several conjugated polymers as hole-transporting materials (HTMs) are fabricated. We found that the cell performance was strongly correlated with the chemical interaction at the interface of Sb(2)S(3) as sensitizer and the HTMs through the thiophene moieties, which led to a higher fill factor (FF), open-circuit voltage (V(oc)), and short-circuit current density (J(sc)). With the application of PCPDTBT (poly(2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b']dithiophene)-alt-4,7(2,1,3-benzothiadiazole)) as a HTM in a Sb(2)S(3)-sensitized solar cell, overall power conversion efficiencies of 6.18, 6.57, and 6.53% at 100, 50, and 10% solar irradiation, respectively, were achieved with a metal mask.
authors.affiliation: KRICT-EPFL Global Research Laboratory, Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 305-600, Republic of Korea.
authors.forename: Sang Hyuk
authors.initials: SH
authors.lastname: Im
authors.forename: Choong-Sun
authors.initials: CS
authors.lastname: Lim
authors.forename: Jeong Ah
authors.initials: JA
authors.lastname: Chang
authors.forename: Yong Hui
authors.initials: YH
authors.lastname: Lee
authors.forename: Nilkamal
authors.initials: N
authors.lastname: Maiti
authors.forename: Hi-Jung
authors.initials: HJ
authors.lastname: Kim
authors.forename: Md K
authors.initials: MK
authors.lastname: Nazeeruddin
authors.forename: Michael
authors.initials: M
authors.lastname: Grätzel
authors.forename: Sang Il
authors.initials: SI
authors.lastname: Seok
mesh_terms: D000965:Antimony / Q000737:chemistry*; D011211:Electric Power Supplies; D004579:Electron Transport; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000295:instrumentation*; D010316:Particle Size; D012666:Semiconductors; D012993:Solar Energy
chemical_list: D000965:Antimony