scholarly journals Hysteretic Ion Migration and Remanent Field in Metal Halide Perovskites

2020 ◽  
Vol 7 (19) ◽  
pp. 2001176 ◽  
Author(s):  
Yongtao Liu ◽  
Nikolay Borodinov ◽  
Matthias Lorenz ◽  
Mahshid Ahmadi ◽  
Sergei V. Kalinin ◽  
...  
Keyword(s):  
Metal Halide ◽  
Ion Migration ◽  
Halide Perovskites

scholarly journals Voltage bias stress effects in metal halide perovskites are strongly dependent on morphology and ion migration pathways

2020 ◽  
Vol 8 (47) ◽  
pp. 25109-25119
Author(s):  
Laura Flannery ◽  
Jonathan Ogle ◽  
Daniel Powell ◽  
Christopher Tassone ◽  
Luisa Whittaker-Brooks
Keyword(s):  
Solar Cell ◽  
Metal Halide ◽  
Research Groups ◽  
Interfacial Interactions ◽  
Ion Migration ◽  
Stress Effects ◽  
Bias Stress ◽  
Voltage Bias ◽  
Halide Perovskites ◽  
Migration Pathways

We determined how morphology, electronic and interfacial interactions affect perovskite PVs under voltage bias stress. Our findings provide insights into the discrepancies in the solar cell efficiencies observed across many different research groups.

scholarly journals Ion Migration Accelerated Reaction between Oxygen and Metal Halide Perovskites in Light and Its Suppression by Cesium Incorporation

2021 ◽  
Vol 11 (8) ◽  
pp. 2002552
Author(s):  
Dongxu Lin ◽  
Tingting Shi ◽  
Haipeng Xie ◽  
Fang Wan ◽  
Xiaoxue Ren ◽  
...  
Keyword(s):  
Metal Halide ◽  
Ion Migration ◽  
Halide Perovskites

scholarly journals Non-radiative processes in metal halide perovskite semiconductors probed by photoluminescence microscopy

2018 ◽  
Vol 190 ◽  
pp. 02011
Author(s):  
Aboma Merdasa ◽  
Marina Gerhard ◽  
Boris Louis ◽  
Jun Li ◽  
Alexander Dobrovolsky ◽  
...  
Keyword(s):  
Single Molecule ◽  
Diffusion Processes ◽  
Super Resolution ◽  
Metal Halide ◽  
Ion Migration ◽  
Radiative Processes ◽  
Metal Halide Perovskite ◽  
Local Areas ◽  
Halide Perovskites ◽  
Photoluminescence Microscopy

Organo metal halide perovskites are solution processed semiconductors that recently attracted a great attention. They possess a rather “soft” and (photo) chemically active solid structure allowing for ion migration and other mass diffusion processes. This is a likely reason why non-radiative recombination centres in these materials are activated and deactivated on relatively slow time-scales. This dynamics reveals as photoluminescence (PL) fluctuations (blinking) of individual microcrystals and local areas of films and allows for application of a broad range of single molecule spectroscopy methods including optical super-resolution. Studying PL blinking resolves properties of individual non-radiative centres and helps to unravel their chemical nature.

Metal Halide Perovskites: Synthesis, Ion Migration, and Application in Field-Effect Transistors

Small ◽  
2018 ◽  
Vol 14 (36) ◽  
pp. 1801460 ◽  
Author(s):  
Xuhai Liu ◽  
Dejian Yu ◽  
Xiufeng Song ◽  
Haibo Zeng
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Metal Halide ◽  
Ion Migration ◽  
Halide Perovskites

Origin of Light Induced Ion Migration in Organic Metal Halide Perovskites in the Presence of Oxygen

2018 ◽  
Author(s):  
Hernan Miguez ◽  
Miguel Anaya ◽  
Mauricio Calvo ◽  
Juan Galisteo ◽  
Juan Pedro Espinos
Keyword(s):  
Metal Halide ◽  
Organic Metal ◽  
Ion Migration ◽  
Halide Perovskites

scholarly journals Operando Imaging of Ion Migration in Metal Halide Perovskites

2020 ◽  
Vol 26 (S2) ◽  
pp. 2046-2048
Author(s):  
Yongtao Liu ◽  
Anton Ievlev ◽  
Liam Collins ◽  
Nikolay Borodinov ◽  
Sergei Kalinin ◽  
...  
Keyword(s):  
Metal Halide ◽  
Ion Migration ◽  
Halide Perovskites

Ion Migration in Metal Halide Perovskites Solar Cells

2020 ◽  
pp. 1-32
Author(s):  
Rashid Khan ◽  
Kester O. Ighodalo ◽  
Zhengguo Xiao
Keyword(s):  
Solar Cells ◽  
Metal Halide ◽  
Ion Migration ◽  
Halide Perovskites

Lead-Free Metal Halide Perovskite Nanocrystals for Photocatalysis in Water

2019 ◽  
Author(s):  
Subhajit Bhattacharjee ◽  
Sonu Pratap Chaudhary ◽  
Sayan Bhattacharyya
Keyword(s):  
Charge Carrier ◽  
Wide Spectrum ◽  
Real Life ◽  
Metal Halide ◽  
Lead Free ◽  
Water Medium ◽  
Type I ◽  
Type Ii ◽  
Perovskite Layer ◽  
Halide Perovskites

<p>Metal halide perovskites with high absorption coefficient, direct generation of free charge carriers, excellent ambipolar charge carrier transport properties, point-defect tolerance, compositional versatility and solution processability are potentially transforming the photovoltaics and optoelectronics industries. However their limited ambient stability, particularly those of iodide perovskites, obscures their use as photocatalysts especially in aqueous medium. In an unprecedented approach we have exploited the photo-absorption property of the less toxic lead-free Cs<sub>3</sub>Bi<sub>2</sub>X<sub>9 </sub>(X = Br, I) nanocrystals (NCs) to catalyse the degradation of water pollutant organic dye, methylene blue (MB) in presence of visible light at room temperature. After providing a proof-of-concept with bromide perovskites in isopropanol, the perovskites are employed as photocatalysts in water medium by designing perovskite/Ag<sub>2</sub>S and perovskite/TiO<sub>2 </sub>composite systems, with Type I (or quasi Type II) and Type II alignments, respectively. Ag<sub>2</sub>S and TiO<sub>2</sub> coatings decelerate penetration of water into the perovskite layer while facilitating charge carrier extraction. With a minimal NC loading, Cs<sub>3</sub>Bi<sub>2</sub>I<sub>9</sub>/Ag<sub>2</sub>S degrades ~90% MB within an hour. Our approach has the potential to unravel the photocatalytic properties of metal halide perovskites for a wide spectrum of real-life applications. </p>

Sign in / Sign up

Export Citation Format

Share Document