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Origins and mechanisms of hysteresis in organometal halide perovskites
(IOP, 2017-04)
Inorganic–organic halide organometal perovskites, such as CH3NH3PbI3 and CsPbI3, etc, have been an unprecedented rising star in the field of photovoltaics since 2009, owing to their exceptionally high power conversion ...
Ion-mediated hopping electrode polarization model for impedance spectra of CH3NH3PbI3
(American Institute of Physics, 2020-08-18)
Methylammonium lead iodide (CH3NH3PbI3) is one of the most attractive materials for optoelectronic applications, and it is the most typical absorber in perovskite solar cells, which are unprecedentedly successful devices ...
Moving Ions Vary Electronic Conductivity in Lead Bromide Perovskite Single Crystals through Dynamic Doping
(Wiley, 2020-10)
Metal halide perovskite single crystals are being explored as functional materials for a variety of optoelectronic applications. Among others, solar cells, field‐effect transistors, and X‐ and γ‐ray detectors have shown ...
Recent advances to understand morphology stability of organic photovoltaics
(SpringerOpen, 2017)
Organic photovoltaic devices are on the verge of commercialization with power conversion efficiencies
exceeding 10 % in laboratory cells and above 8.5 % in modules. However, one of the main limitations hindering their ...
Direct observation of surface polarization at hybrid perovskite/Au interfaces by dark transient experiments
(American Institute of Physics, 2020-05-05)
A distinctive feature of hybrid perovskite light-absorbing materials is the non-negligible ionic conductivity influencing photovoltaic performance
and stability. Moving ions or vacancies can naturally accumulate at the ...
Perovskite solar cells with versatile electropolymerized fullerene as electron extraction layer
(Elsevier, 2018-10-02)
An electropolymerized layer of a C60 fullerene derivative was successfully used as selective contact and electron transport layer in perovskite solar cells. The electropolymeric film was formed over FTO electrodes by an ...
Defect tolerant perovskite solar cells from blade coated non-toxic solvents
(Royal Society of Chemistry, 2018-09)
The process of crystallization of lead halide perovskites by industrially relevant techniques involving non-toxic solvents is not understood completely and needs improvement. To this date, devices with the highest efficiency ...
Reversible Formation of Gold Halides in Single‐Crystal Hybrid‐Perovskite/Au Interface upon Biasing and Effect on Electronic Carrier Injection
(Wiley, 2019-08-08)
Solar cells, light emitting diodes, and X‐ray detectors based on perovskite materials often incorporate gold electrodes, either in direct or indirect contact with the perovskite compound. Chemical interactions between ...
Mechanistic and Kinetic Analysis of Perovskite Memristors with Buffer Layers: The Case of a Two-Step Set Process
(ACS Publications, 2023)
With the increasing demand for artificially intelligent hardware systems for
brain-inspired in-memory and neuromorphic computing, understanding the underlying
mechanisms in the resistive switching of memristor devices ...
Coupling between Ion Drift and Kinetics of Electronic Current Transients in MAPbBr3 Single Crystals
(American Chemical Society, 2022-03-11)
The optoelectronic properties of halide perovskite materials have fostered their utilization in many applications. Unravelling their working mechanisms remains challenging because of their mixed ionic–electronic conductive ...