Photochemical Dynamics Group

In Short

The aim of the Group for Photochemical Dynamics (Moser Group) is to contribute to the advancement of solar energy conversion science and technology through fundamental research. Efforts focus in particular on scrutinizing the mechanisms and ultrafast dynamics of light-induced electron transfer and charge separation at donor-acceptor heterojunctions, and in supramolecular assemblies.

Systems currently under study include hybrid organic-inorganic lead halide perovskite semiconductor thin films and quantum dots, dye-sensitized solar cells, and small molecule-based organic photovoltaic systems.

Ultrafast laser spectroscopy techniques, such as broadband transient absorption and fluorescence up-conversion, electro-modulated differential absorption, and time-resolved THz spectroscopies, are our main methods of investigation.

Selected Recent Publications

Direct synthesis of selenium nanowire mesh on a solid substrate and insights into ultrafast photocarrier dynamics.
W. Yan, A. Burgos-Caminal, T. D. Gupta, J.-E. Moser & F. Sorin
J. Phys. Chem. C 2018, 122, 25134-25141.

Donor effect on photoinduced interfacial charge transfer dynamics for D-π-A diketopyrrolopyrole dye-sensitizers adsorbed on titanium dioxide.
H.-W. Bahng, A. Hagfeldt & J.-E. Moser
J. Phys. Chem. C 2018, 122, 19359-19369.

Lateral intermolecular electronic interactions of diketopyrrolopyrrole D-π-A solar dye sensitizers adsorbed on mesoporous alumina.
H.-W. Bahng, A. Hagfeldt & J.-E. Moser
J. Phys. Chem. C 2018, 122, 19348-19358.

Charge separation and carrier dynamics in donor-acceptor heterojunction photovoltaic systems.
J. Teuscher, J. C. Brauer, A. Stepanov, A. Solano, A. Boziki, M. Chergui, J.-P. Wolf, U. Rothlisberger, N. Banerji & J.-E. Moser
Struct. Dyn. 2017, 4, 061503.

Dye-sensitized solar cells for efficient power generation under ambient lighting.
M. Freitag, J. Teuscher, Y. Saygili, X. Zhang, F. Giordano, P. Liska, J. Hua, S. M. Zakeeruddin, J.-E. Moser, M. Grätzel & A. Hagfeldt
Nat. Photon. 2017, 11, 372-378.

Self-tracking solar concentrator device.
V. Zagolla, C. Moser & J.-E. Moser
Patent No. US 2,016,282,614 A1, US 9,602,047 B2 (Mar. 21, 2017)..

Energy and charge transfer cascade in methylammonium lead bromide perovskite nanoparticle aggregates.
M. E. F. Bouduban, A. Burgos-Caminal, R. Ossola, J. Teuscher & J.-E. Moser
Chem. Sci. 2017, 8, 4371-4380.

Perovskite photovoltaics: Slow recombination unveiled.
J.-E. Moser
Nat. Mater.
2017, 16, 4-6.

Dynamics of photocarrier separation in MAPbI3 perovskite multigrain films under a quasistatic electric field.
A. A. Paraecattil, J. Risse-De Jonghe, V. Pranculis, J. Teuscher & J.-E. Moser
J. Phys. Chem. C 2016, 120, 19595-19602.

The fate of electron-hole pairs in polymer:fullerene blends for organic photovoltaics.
M. Causa’, J. De Jonghe-Risse, M. Scarongella, J. C. Brauer, E. Buchaca-Domingo, J.-E. Moser, N. Stingelin & N. Banerji
Nat. Commun. 2016, 7, 12556.