Photochemical Dynamics Group


In Short

The Photochemical Dynamics Group (Moser Group) aimed to advance the science and technology of solar energy conversion through basic research. Since 1998, efforts have focused on investigating the mechanisms and ultrafast dynamics of photoinduced charge separation and transfer in molecular, semiconductor and hybrid systems for emerging photovoltaic and lighting applications.

Systems under investigation included perovskite lead halide organic-inorganic hybrid semiconductor thin films and quantized nanoparticles, dye-sensitized solar cells, and small-molecule organic photovoltaic systems. Ultrafast laser spectroscopy techniques, such as broadband transient absorption and fluorescence upconversion, electromodulated differential absorption and time-resolved THz spectroscopies, have been the main methods of investigation.

The Group’s experimental research activity ceased in June 2023 when Pr Jacques-E. Moser has reached retirement age.

See Research Themes

Selected Recent Articles

Photo-doping of spiro-OMeTAD for highly stable and efficient perovskite solar cells.
S.-G. Kim, G. C. Fish, E. Socie, A. T. Terpstra, D.-A. Park, K. Zhu, M. Grätzel, J.-E. Moser & N.-G. Park
, 2024, 8, 1707-1722

Nanosecond diffuse refectance spectroscopy for in-situ analysis of electron back recombination and dye regeneration
in fully functional, highly efficient, opaque dye-sensitized solar cell devices.
E. Ghadiri & J.-E. Moser
J. Phys. Chem. C,
2023, 127, 23285-23295.

The impact of spacer size on charge transfer excitons in Dion−Jacobson and Ruddlesden−Popper layered hybrid perovskites.
G. C. Fish, A. T. Terpstra, A. Ducǐnskas, M. Almalki, L. C. Carbone, L. Pfeifer, M. Grätzel, J.-E. Moser & J. V. Milic
J. Phys. Chem. Lett. 2023, 14, 6248-6254.

Critical role of H-aggregation for high-efficiency photoinduced charge generation in pristine pentamethine cyanine salts.
G. C. Fish, J. M. Moreno-Naranjo, A. Billion, D. Kratzert, E. Hack, I. Krossing, F. Nüesch & J.-E. Moser
Phys. Chem. Chem. Phys. 2021, 23, 23886-23895.

Resonant band-edge emissive states in strongly confined CsPbBr3 perovskite nanoplatelets.
E. Socie, B. R. C. Vale, A. T. Terpstra, A. Burgos-Caminal & J.-E. Moser
J. Phys. Chem. C 2021, 125, 14317-14325.

Hot carrier mobility dynamics unravel competing subpicosecond processes in lead halide perovskites.
A. Burgos-Caminal, J. M. Moreno-Naranjo, A. R. Willauer, A. A. Paraecattil, A. Ajdarzadeh & J.-E. Moser
J. Phys. Chem. C 2021, 125, 98-106.

Direct observation of shallow trap states in thermal equilibrium with band-edge excitons in strongly confined CsPbBr3 perovskite nanoplatelets.
E. Socie, B. R. C. Vale, A. Burgos-Caminal & J.-E. Moser
Adv. Optical Mater. 2021, 9, 2001308.

Exciton and carrier dynamics in two-dimensional perovskites.
A. Burgos-Caminal, E. Socie, M. E. F. Bouduban & J.-E. Moser
J. Phys. Chem. Lett. 2020, 11, 7692-7701.

Exciton, biexciton, and hot exciton dynamics in CsPbBr3 colloidal nanoplatelets.
B. R. C. Vale, E. Socie, A. Burgos-Caminal, J. Bettini, M. A. Schiavon & J.-E. Moser
J. Phys. Chem. Lett. 2020, 11, 387-394.