In situ Raman study of the photoinduced behavior of dye molecules on TiO₂(hkl) single crystal surfaces.

ABSTRACT: In dye-sensitized solar cells (DSSCs), the TiO₂/dye interface significantly affects photovoltaic performance. However, the adsorption and photoinduced behavior of dye molecules on the TiO₂ substrate remains unclear. Herein, shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS) was used to study the adsorption and photoinduced behavior of dye (N719) molecules on different TiO₂(hkl) surfaces. On TiO₂(001) and TiO₂(110) surfaces, the in situ SHINERS and mass spectrometry results indicate S[double bond, length as m-dash]C bond cleavage in the anchoring groups of adsorbed N719, whereas negligible bond cleavage occurs on the TiO₂(111) surface. Furthermore, DFT calculations show the stability of the S[doub

SUBMITTER: Zhang SP 

PROVIDER: S-EPMC8159273 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature