Photoinduced nonequilibrium processes in nanoscale materials play key roles in
photovoltaic and photocatalytic applications. This review summarizes recent theoretical …

Phonon-assisted photon upconversion holds great potential for numerous applications, eg,
optical refrigeration. However, traditional semiconductors face energy gain limitations due to …

Solar cells and optoelectronic devices are exposed to heat that degrades performance.
Therefore, elucidating temperature-dependent charge carrier dynamics is essential for …

Optimizing the performance of semiconductors in both classical and quantum applications,
not only requires a solid understanding of elementary excitations such as electrons, holes …

Lead halide perovskites exhibit structural instabilities and large atomic fluctuations thought
to impact their optical and thermal properties, yet detailed structural and temporal …

Hybrid organic–inorganic perovskites (HOIPs) contain light hydrogen atoms that exhibit
significant nuclear quantum effects (NQEs). We demonstrate that NQEs have a strong effect …

Anatase TiO2 is an intensely investigated photocatalytic material due to its abundance and
chemical stability. However, it suffers from weak light harvesting and low photocatalytic …

Lead‐based halide perovskite crystals are shown to have strongly anharmonic structural
dynamics. This behavior is important because it may be the origin of their exceptional …

Inorganic lead halide perovskites (ILHPs) exhibit a series of phase transitions, and
stabilization of the phases with desirable optoelectronic properties remains a major …

Exposure to oxygen and light undermines chemical stability of metal halide perovskites,
while it surprisingly improves their optical properties. Focusing on CH3NH3PbI3, we …