Electronic and molecular structures of organic dye/TiO(2) interfaces for solar cell applications: a core level photoelectron spectroscopy study

Physical Chemistry Chemical Physics : PCCP
Maria HahlinHåkan Rensmo

Abstract

The electronic and molecular properties of three organic dye molecules with the general structure donor-linker-anchor have been investigated using core level photoelectron spectroscopy (PES). The molecules contain a diphenylaniline donor unit, a thiophene linker unit, and cyanoacrylic acid or rhodanine-3-acetic acid anchor units. They have been investigated both in the form of a multilayer and adsorbed onto nanoporous TiO(2) and the experimental results were also compared with DFT calculations. The changes at the dye-sensitized TiO(2) surface due to the modification of either the donor unit or the anchor unit was investigated and the results showed important differences in coverage as well as in electronic and molecular surface properties. By measuring the core level binding energies, the sub-molecular properties were characterized and the result showed that the adsorption to the TiO(2) influences the energy levels of the sub-molecular units differently.

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Citations

Jan 30, 2014·Nanoscale Research Letters·Yaqin WangShiwei Lin
Dec 20, 2012·The Journal of Chemical Physics·Matthew WestonJames N O'Shea
Dec 19, 2015·Physical Chemistry Chemical Physics : PCCP·María VizueteFernando Langa
Apr 3, 2014·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Erik M J JohanssonHåkan Rensmo
Oct 31, 2012·Physical Chemistry Chemical Physics : PCCP·Chiara AnselmiFilippo De Angelis
Jul 19, 2012·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Yousuke Ooyama, Yutaka Harima
Dec 22, 2010·Physical Chemistry Chemical Physics : PCCP·Maria HahlinHåkan Rensmo
Nov 15, 2020·The Journal of Chemical Physics·Nathan T Z PottsElizabeth A Gibson
Jul 10, 2021·The Journal of Chemical Physics·Robert H TempertonJames N O'Shea
Jul 30, 2021·Journal of Chemical Theory and Computation·Alekos SegalinaMariachiara Pastore
Mar 21, 2013·The Journal of Physical Chemistry Letters·Mariachiara Pastore, Filippo De Angelis
Jun 2, 2011·The Journal of Physical Chemistry Letters·Mariachiara Pastore, Filippo De Angelis
Mar 26, 2014·Chemical Reviews·Yu BaiPeng Wang

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