Surface Molecular Quantification and Photoelectrochemical Characterization of Mixed Organic Dye and Coadsorbent Layers on TiO2 for Dye-Sensitized Solar Cells

详细信息    查看全文

• 作者：Tannia Marinado ; Maria Hahlin ; Xiao Jiang ; Maria Quintana ; Erik M. J. Johansson ; Erik Gabrielsson ; Stefan Plogmaker ; Daniel P. Hagberg ; Gerrit Boschloo ; Shaik M. Zakeeruddin ; Michael Grä ; tzel ; Han
• 刊名：Journal of Physical Chemistry C
• 出版年：2010
• 出版时间：July 15, 2010
• 年：2010
• 卷：114
• 期：27
• 页码：11903-11910
• 全文大小：299K
• 年卷期：v.114,no.27(July 15, 2010)
• ISSN：1932-7455

文摘

Different molecular layers on TiO₂ were prepared by using the p-dimethylaniline triphenylamine based organic dye, D29, together with the coadsorbents decylphosphonic acid (DPA), dineohexyl bis(3,3-dimethylbutyl)phosphinic acid (DINHOP), and chenodeoxycholic acid (CDCA). The surface molecular structure of dye and coadsorbent layers on TiO₂ was investigated by photoelectron spectroscopy (PES). A focus was to determine the surface molecular concentrations using characteristic photoelectron core levels. Dye-sensitized solar cells (DSCs) were prepared from the same substrate and were further characterized by photoelectrochemical methods. Together the investigation gives information on the arrangement of the mixed molecular layer and a first insight to the extent to which the coadsorbents exchange with dye molecules on the TiO₂ surface for the examined conditions.