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

The last decade has witnessed the skyrocketing progress of perovskite solar cells (PSCs)
with their current world record energy conversion efficiency reaching over 24 …

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 …

The capacitor is a key element of electronic devices and is characterized by positive
capacitance. However, a negative capacitance (NC) behaviour may occur in certain cases …

Electric transport in semiconductor superlattices is dominated by pronounced negative
differential conductivity. In this report, the standard transport theories for superlattices, ie …

Perovskite solar cells are notorious for exhibiting transient behavior not seen in conventional
inorganic semiconductor devices. Significant inroads have been made into understanding …

With the progress in silicon circuit miniaturization, lowering power consumption becomes the
major objective. Supply voltage scaling in ultralarge‐scale integration (ULSI) is limited by …

A variety of experiments on vacuum-deposited methylammonium lead iodide perovskite
solar cells are presented, including JV curves with different scan rates, light intensity …

Local variations in the charge distribution at semiconductor interfaces can lead to energy
level band bending in the structure's band diagram. Measuring this band bending is …