For decades, ultrafast time‐resolved spectroscopy has found its way into an increasing
number of applications. It has become a vital technique to investigate energy conversion …

Photoinduced electron transfer (PET) across molecular/bulk interfaces has gained attention
only recently and is still poorly understood. These interfaces offer an excellent case study …

Photocatalysis is a promising sustainable method to generate solar fuels for the future, as
well as having other applications such as water/air purification. However, the performance of …

Ultrafast carrier dynamics at interfaces plays a major role in governing solar energy
conversion efficiency in solar conversion systems, especially in solar cells and …

Sunlight as the most abundant renewable energy holds the promise to make our society
sustainable. However, due to its low power density and intermittence, efficient conversion …

Charge photogeneration by exciton dissociation at the donor/acceptor interface is the heart
of organic molecule–based devices for solar energy conversion. Femtosecond pump–probe …

Dye-sensitized nanocrystalline solar cells are presently under intensive investigation, as
they offer an attractive alternative to conventional pn junction devices. 1, 2 Solid-state …

Electrons are the workhorses of solar energy conversion. Conversion of the energy of light to
electricity in photovoltaics, or to energy-rich molecules (solar fuel) through photocatalytic …

Time-resolved spectroscopy is a powerful tool for studying fundamental photophysics in
optoelectronic materials on a molecular temporal scale. In this review, we describe transient …

Transient absorption spectroscopy (TAS) is a time‐resolved spectroscopic technique that
can quantitatively observe temporal changes in the absorption spectrum associated with …