Impedance spectroscopy (IS) provides a detailed understanding of the dynamic phenomena
underlying the operation of photovoltaic and optoelectronic devices. Here we provide a …

Since the inception of the unprecedented rise of halide perovskites for photovoltaic
research, ion migration has shadowed this material class with undesirable hysteresis and …

Inserting an ultrathin low-conductivity interlayer between the absorber and transport layer
has emerged as an important strategy for reducing surface recombination in the best …

Polymer passivation layers can improve the open-circuit voltage of perovskite solar cells
when inserted at the perovskite–charge transport layer interfaces. Unfortunately, many such …

In recent years, the perovskite solar cells have gained much attention because of their ever-
increasing power conversion efficiency (PCE), simple solution fabrication process, flyable …

Metal halide perovskites are the first solution processed semiconductors that can compete in
their functionality with conventional semiconductors, such as silicon. Over the past several …

Due to the excellent optoelectronic properties, organic–inorganic perovskites have drawn
much attention and have been applied in different electronics with remarkable performance …

Impedance spectroscopy (IS) is an effective characterization technique used to probe and
distinguish charge dynamics occurring at different timescales in optoelectronic and electric …

A multitude of chemical, biological, and material systems present an inductive behavior that
is not electromagnetic in origin. Here, it is termed a chemical inductor. We show that the …

So-called negative capacitance seems to remain an obscure feature in the analysis of the
frequency-dependent impedance of perovskite solar cells. It belongs to one of the puzzling …