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Three Keggin‐Type Transition Metal‐Substituted Polyoxometalates as Pure Inorganic Photosensitizers for p‐Type Dye‐Sensitized Solar Cells
Author(s) -
Guo XiangWei,
Li JianSheng,
Sang XiaoJing,
Chen WeiLin,
Su ZhongMin,
Wang EnBo
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201504497
Subject(s) - transition metal , coumarin , metal , chemistry , polyoxometalate , economic shortage , dye sensitized solar cell , inorganic chemistry , catalysis , organic chemistry , electrode , electrolyte , linguistics , philosophy , government (linguistics)
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, TBA 8 Na 2 [SiW 9 O 37 {Co(H 2 O) 3 }]⋅ 11 H 2 O (SiW 9 Co 3 ), TBA 4 [(SiO 4 )W 10 Mn III 2 O 36 H 6 ]⋅1.5 CH 3 CN⋅ 2 H 2 O (SiW 10 Mn III 2 ), and TBA 3.5 H 5.5 [(SiO 4 )W 10 Mn III/IV 2 O 36 ]⋅ 10 H 2 O⋅0.5 CH 3 CN (SiW 10 Mn III/IV 2 ) has been explored as pure inorganic dye photosensitizers for p‐DSSCs (TBA=(n‐C 4 H 9 ) 4 N + ). 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.