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

Two-dimensional organic–inorganic hybrid perovskites (2DHPs) consist of alternating
anionic metal-halide and cationic organic layers. They have widely tunable structural and …

Metal‐halide semiconductors have shown excellent performance in optoelectronic
applications such as solar cells, light‐emitting diodes, and detectors. In this review the role …

Molecularly soft organic-inorganic hybrid perovskites are susceptible to dynamic instabilities
of the lattice called octahedral tilt, which directly impacts their carrier transport and exciton …

Optically inactive dark exciton states play an important role in light emission processes in
semiconductors because they provide an efficient nonradiative recombination channel …

In atomically thin two-dimensional (2D) crystals, the excitonic properties and band structure
scale strongly with the thickness, providing a new playground for the investigation of exciton …

The effective mass of charge carriers is a crucial parameter for the design of any
optoelectronic device. The estimated values of the effective mass of 2D halide perovskites …

2D halide perovskites are among intensely studied materials platforms profiting from
solution-based growth and chemical flexibility. They feature exceptionally strong interactions …

Abstract 2D perovskites offers a rich playing field to explore exciton physics and they
possess a great potential for a variety of opto‐electronic applications. Whilst their …

Materials combining semiconductor functionalities with spin control are desired for the
advancement of quantum technologies. Here, we study the magneto-optical properties of …