59 research outputs found
Research Update: Luminescence in lead halide perovskites
Efficiency and dynamics of radiative recombination of carriers are crucial figures of merit for optoelectronic materials. Following the recent success of lead halide perovskites in efficient photovoltaic and light emitting technologies, here we review some of the noted literature on the luminescence of this emerging class of materials. After outlining the theoretical formalism that is currently used to explain the carrier recombination dynamics, we review a few significant works which use photoluminescence as a tool to understand and optimize the operation of perovskite based optoelectronic devices
A dual-phase architecture for efficient amplified spontaneous emission in lead iodide perovskites
We report a way to overcome Auger recombination in lead iodide perovskites by investigating the domain structure forming below the phase transition temperature
Probing dynamical symmetry breaking using quantum-entangled photons
We present an input/output analysis of photon-correlation experiments whereby
a quantum mechanically entangled bi-photon state interacts with a material
sample placed in one arm of a Hong-Ou-Mandel (HOM) apparatus. We show that the
output signal contains detailed information about subsequent entanglement with
the microscopic quantum states in the sample. In particular, we apply the
method to an ensemble of emitters interacting with a common photon mode within
the open-system Dicke Model. Our results indicate considerable dynamical
information concerning spontaneous symmetry breaking can be revealed with such
an experimental system
- …