Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 43, 2012
Previous Article Next Article

Resonance-Raman microspectroscopy for quality assurance of dye-sensitized NiOx films with respect to dye desorption kinetics in water

Author affiliations

Abstract

Resonance Raman microspectroscopy is used to investigate dye-sensitized NiOx nanoparticle films to be used as photocathodes in tandem dye-sensitized solar cells. It is shown that rR microspectroscopy has potential for applications in quality assurance in such systems and also in integrated dye-sensitized solar cell modules. Here, ruthenium dye-sensitized NiOx nanoparticle layers were produced both as single and double NiOx films using a one or two-step deposition process, respectively. The distribution of the sensitizer on the surfaces was investigated by rR microspectroscopy. The chemical images obtained from rR microspectroscopy yield complementary information to bright field microscope pictures and provide detailed insight into the sensitization pattern e.g. in the vicinity of surface vacancies and other inhomogeneities. Furthermore, based on the mapping results the dye desorption kinetics upon addition of water has been analysed. Desorption on the single NiOx film is faster and more efficient than on the double film. These changes are attributed to binding sites on the NiOx surface that are passivated with regard to water penetration. This passivation is introduced by the second synthesis step in building the second film of NiOx on the glass substrate. Both findings highlight the potential of rR microspectroscopy for quality assurance of dye-sensitized solar cell electrodes.

Graphical abstract: Resonance-Raman microspectroscopy for quality assurance of dye-sensitized NiOx films with respect to dye desorption kinetics in water

Back to tab navigation

Supplementary files

Article information


Submitted
21 Aug 2012
Accepted
12 Sep 2012
First published
04 Oct 2012

Phys. Chem. Chem. Phys., 2012,14, 15185-15190
Article type
Paper

Resonance-Raman microspectroscopy for quality assurance of dye-sensitized NiOx films with respect to dye desorption kinetics in water

M. Bräutigam, M. Schulz, J. Inglis, J. Popp, J. G. Vos and B. Dietzek, Phys. Chem. Chem. Phys., 2012, 14, 15185
DOI: 10.1039/C2CP42938A

Social activity

Search articles by author

Spotlight

Advertisements