On the stability of manganese tris(β-diketonate) complexes as redox mediators in DSSCs.
作者： Stefano Carli , Elisabetta Benazzi , Laura Casarin , Tatiana Bernardi , Valerio Bertolasi
DOI: 10.1039/C5CP05524E
关键词: Redox 、 Polymer chemistry 、 Chemistry 、 Inorganic chemistry 、 dBm 、 Manganese 、 Dye-sensitized solar cell 、 Ligand 、 Tris
摘要: The photoelectrochemical properties and stability of dye sensitized solar cells containing Mn(β-diketonato)3 complexes, [MnIII(acac)3] (1) (acac = acetylacetonate), [MnIII(CF2)3] (2) (CF2 4,4-difluoro-1-phenylbutanate-1,3-dione), [MnIII(DBM)3] (3) (DBM dibenzoylmethanate), [MnII(CF2)3]TBA (TBA tetrabutylammonium) (4) [MnII(DBM)3]TBA (5), have been evaluated. At room temperature, the complexes undergo ligand exchange with 4-tert-butyl-pyridine, an additive commonly used in device to reduce charge recombination at photoanode. An increased was achieved by using Z907 passivating photoanode short chain siloxanes. It also found that Mn(II)/(III) couple is involved regeneration process, instead Mn(III)/(IV) (E1/2 > 1 V vs. SCE) previously indicated literature.
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