Spectral-luminescent and photovoltaic properties of polymethine dyes of various structures are studied. It is shown that an increase in the length of the methylene chain between the active chromophores leads to a red-wave shift of the absorption and fluorescence spectra. Significant changes in the absorptivity and lifetime of fluorescence do not occur in this case. The best photovoltaic parameters have cells sensitized with shorter dye molecules. It is shown, that for a longer dye the resistance associated with electron recombination on the TiO2/electrolyte surface is much higher than the electron transfer resistance in the semiconductor, which reduces the efficiency of electron transfer in the solar cell, sensitized with longer dye molecules.
|Journal||IOP Conference Series: Materials Science and Engineering|
|Publication status||Published - 12 Jan 2018|
|Event||6th International Conference on Modern Technologies for Non-Destructive Testing - Tomsk, Russian Federation|
Duration: 9 Oct 2017 → 14 Oct 2017
ASJC Scopus subject areas
- Materials Science(all)