A Novel Carboxyethyltin Functionalized Sandwich-type Germanotungstate: Synthesis, Crystal Structure, Photosensitivity, and Application in Dye-Sensitized Solar Cells

被引：72

作者：

Sang, Xiaojing ^{[1
]}

Li, Jiansheng ^{[1
]}

Zhang, Lancui ^{[2
]}

Wang, Zanjiao ^{[2
]}

Chen, Weilin ^{[1
]}

Zhu, Zaiming ^{[2
]}

Su, Zhongmin ^{[1
]}

Wang, Enbo ^{[1
]}

机构：

[1] NE Normal Univ, Dept Chem, Minist Educ, Key Lab Polyoxometalate Sci, Changchun 130024, Jilin, Peoples R China

[2] Liaoning Normal Univ, Sch Chem & Chem Engn, Dalian 116029, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2014年 / 6卷 / 10期

基金：

中国国家自然科学基金;

关键词：

polyoxometalate; carboxyethyltin; photosensitivity; TiO2; dye-sensitized solar cell; POLYOXOMETALATE-ASSISTED SYNTHESIS; CHARGE-TRANSFER; ORGANIC SENSITIZERS; 3D ARCHITECTURES; TIO2; ELECTROLYTE; EFFICIENCY; PHOTOANODE; CATALYSTS; FILMS;

D O I：

10.1021/am501192f

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A novel sandwich-type germanotungstate [C-(NH2)(3)](10)[Mn-2{Sn(CH2)(2)COOH}(2)(B-alpha-GeW9O34)(2)]center dot 8H(2)O (1) represents the first single crystalline polyoxometalate (POM) functionalized by open chain carboxyethyltin, which was designed and synthesized in aqueous solution and applied to a dye-sensitized solar cell (DSSC) for the first time. Its photosensitivity was explored through a fluorescence spectrum (FL), surface photovoltage spectrum (SPV), electrochemical method, and solid diffuse spectrum. 1 displays the primary features of sensitizers in DSSCs, and the efficiency of the solar cell is 0.22%. Delightedly, when 1 was employed to assemble a cosensitized solar cell configuration by preparing a 1-doped TiO2 electrode and additionally adsorbing N719 dyes, a considerably improved efficiency was achieved through increasing spectral absorption and accelerating electron transport, which is 19.4% higher than that of single N719 sensitization. This result opens up a new way to position different dyes on a single TiO2 film for cosensitization

引用

页码：7876 / 7884

页数：9

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