About this Materials Science article
Donor−Acceptor-Functionalized Subphthalocyanines for Dye-Sensitized Solar Cells by Henrik Gotfredsen; Timo Neumann; Freja Eilsø Storm; Alberto Viñas Muñoz; Martyn Jevric; Ole Hammerich; Kurt V. Mikkelsen; Marina Freitag; Gerrit Boschloo; Mogens Brøndsted Nielsen is a Materials Science article available to read on EtoBox.
Boron subphthalocyanines (SubPcs) are attractive as light-harvesters in photovoltaics devices. Here we present the synthesis, optical and electrochemical properties, and device performances of a series of donor-acceptor functionalized SubPc derivatives incorporating a carboxylic acid for anchoring onto TiO2. Liquid-and solid-state dye-sensitized solar cells (DSCs) were prepared from three compounds, and a triad system consisting of two aniline donor moieties and a benzothiadiazole acceptor moiety was found to exhibit the highest power conversion efficiency (PCE) in the series (PCE = 1.54%; solid-state device). The compounds were prepared by stepwise acetylenic coupling reactions. In addition, we present the synthesis and optical properties of a SubPc derivative incorporating three anilino-substituted 1,1,4,4tetracyanobutadiene units, prepared by the [2+2] cycloaddition between three ethynyl units at the SubPc periphery and three tetracyanoethylene molecules followed by electrocyclic ring-opening reactions.
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- Author
- Henrik Gotfredsen; Timo Neumann; Freja Eilsø Storm; Alberto Viñas Muñoz; Martyn Jevric; Ole Hammerich; Kurt V. Mikkelsen; Marina Freitag; Gerrit Boschloo; Mogens Brøndsted Nielsen
- Published
- 2018
- Language
- EN
- Field
- Materials Science (Physical Sciences)