The Urbach energy is an expression of the static and dynamic disorder in a semiconductor
and is directly accessible via optical characterization techniques. The strength of this metric …

Chalcogenide perovskites have recently emerged into the spotlight as highly robust, earth
abundant, and nontoxic candidates for various energy conversion applications, not least …

In traditional optoelectronic approaches, control over spin, charge, and light requires the use
of both electrical and magnetic fields. In a spin-polarized light-emitting diode (spin-LED) …

Metal halide perovskite semiconductors possess outstanding characteristics for
optoelectronic applications including but not limited to photovoltaics. Low-dimensional and …

2D halide perovskites feature solution processability and tunable optoelectronic properties
for optoelectronic applications. However, the controllable fabrication of halide perovskite …

Light-emitting diodes (LEDs) are ubiquitous in modern society, with applications spanning
from lighting and displays to medical diagnostics and data communications. Metal-halide …

Lead-free halide perovskite nanocrystals (NCs) have received increasing attention owing to
their low toxicity and high stability. Localized charge distribution and strong carrier–phonon …

Perovskites have emerged as promising light harvesters in photovoltaics. The resulting solar
cells (i) are thin and lightweight,(ii) can be produced through solution processes,(iii) mainly …

Open‐circuit voltages of lead‐halide perovskite solar cells are improving rapidly and are
approaching the thermodynamic limit. Since many different perovskite compositions with …

The relaxation of the above-gap (“hot”) carriers in lead halide perovskites (LHPs) is
important for applications in photovoltaics and offers insights into carrier–carrier and carrier …