title: Three Keggin-Type Transition Metal-Substituted Polyoxometalates as Pure Inorganic Photosensitizers for p-Type Dye-Sensitized Solar Cells.
abstract: In light of the serious challenge of severe global energy shortages, p-type dye-sensitized solar cells (p-DSSCs) have attracted increasing levels of interest. The potential of three Keggin-type transition metal-substituted polyoxometalates, TBA8Na2[SiW9O37{Co(H2O)3}]⋅ 11 H2O (SiW9Co3), TBA4[(SiO4)W10MnIII2O36H6]⋅1.5 CH3CN⋅ 2 H2O (SiW10MnIII2), and TBA3.5H5.5[(SiO4)W10MnIII/IV2O36]⋅ 10 H2O⋅0.5 CH3CN (SiW10MnIII/IV2) has been explored as pure inorganic dye photosensitizers for p-DSSCs (TBA=(n-C4H9)4N+). The three dyes show overall conversion efficiencies of 0.038, 0.029, and 0.027 %, respectively, all of which are higher than that of coumarin 343 (0.017 %). These polyoxometalates are the first three pure inorganic dyes reported for use with p-DSSCs and therefore demonstrate a new strategy for designing efficient dyes, especially pure inorganic dyes. Moreover, they broaden the range of applications for polyoxometalates.
authors.affiliation: Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, P. R. China.
authors.forename: Xiang-Wei
authors.initials: XW
authors.lastname: Guo
authors.affiliation: Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, P. R. China.
authors.forename: Jian-Sheng
authors.initials: JS
authors.lastname: Li
authors.affiliation: Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, P. R. China.
authors.forename: Xiao-Jing
authors.initials: XJ
authors.lastname: Sang
authors.affiliation: Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, P. R. China. chenwl@nenu.edu.cn.
authors.forename: Wei-Lin
authors.initials: WL
authors.lastname: Chen
authors.affiliation: Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, P. R. China.
authors.forename: Zhong-Min
authors.initials: ZM
authors.lastname: Su
authors.affiliation: Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, P. R. China. wangeb889@nenu.edu.cn.
authors.forename: En-Bo
authors.initials: EB
authors.lastname: Wang
keywords: dye-sensitized solar cells; energy conversion; photosensitizers; polyoxometalates