Tuning the HOMO and LUMO Energy Levels of Organic Chromophores for Dye Sensitized Solar Cells

作者：Daniel P. Hagberg, Tannia Marinado, Karl Martin Karlsson, Kazuteru Nonomura, Peng Qin, Gerrit K. Boschloo, Tore Brinck, Anders Hagfeldt, Licheng Sun · 发表于：The Journal of Organic Chemistry · 年份：2007 · DOI：10.1021/jo701592x · 被引用次数：631 · 研究领域：TiO2 Photocatalysis and Solar Cells、Transition Metal Oxide Nanomaterials、Advanced Photocatalysis Techniques

A series of organic chromophores have been synthesized in order to approach optimal energy level composition in the TiO2-dye-iodide/triiodide system in the dye-sensitized solar cells. HOMO and LUMO energy level tuning is achieved by varying the conjugation between the triphenylamine donor and the cyanoacetic acid acceptor. This is supported by spectral and electrochemical experiments and TDDFT calculations. These results show that energetic tuning of the chromophores was successful and fulfilled the thermodynamic criteria for dye-sensitized solar cells, electrical losses depending on the size and orientation of the chromophores were observed.