A deep understanding of defects is essential for the optimization of materials for solar energy
conversion. This is particularly true for metal oxide photo (electro) catalysts, which typically …

Halide perovskites (HPs) are potential game-changing materials for a broad spectrum of
optoelectronic applications ranging from photovoltaics, light-emitting devices, lasers to …

The efficiency of two-dimensional Dion–Jacobson-type materials relies on the complex
interplay between electronic and lattice dynamics; however, questions remain about the …

The development of halide perovskite semiconductors led to various technological
breakthroughs in optoelectronics, in particular in the areas of photovoltaics and light-emitting …

Understanding the origin of electron–phonon coupling in lead halide perovskites is key to
interpreting and leveraging their optical and electronic properties. Here we show that …

Layered 2D perovskites are making inroads as materials for photovoltaics and light emitting
diodes, but their photophysics is still lively debated. Although their large exciton binding …

Polarons are quasiparticles that emerge from the interaction of fermionic particles with
bosonic fields. In crystalline solids, polarons form when electrons and holes become …

Mixed‐halide perovskites show tunable emission wavelength across the visible‐light range,
with optimum control of the light color. However, color stability remains limited due to the …

The success of the lead halide perovskites in diverse optoelectronics has motivated
considerable interest in their fundamental photocarrier dynamics. Here we report the …

Excitons consist of electrons and holes held together by their attractive Coulomb interaction.
Although excitons are neutral excitations, spatial fluctuations in their charge density couple …