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.

scholarly journals Tailoring the electron and hole dimensionality to achieve efficient and stable metal halide perovskite scintillators

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Zhifang Tan ◽  
Jincong Pang ◽  
Guangda Niu ◽  
Jun-Hui Yuan ◽  
Kan-Hao Xue ◽  
...  
Keyword(s):  
Water Solubility ◽  
Radiation Stability ◽  
Metal Halide ◽  
Lead Free ◽  
X Ray ◽  
Metal Halide Perovskite ◽  
Bonding Interaction ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Low X

Abstract Metal halide perovskites have recently been reported as excellent scintillators for X-ray detection. However, perovskite based scintillators are susceptible to moisture and oxygen atmosphere, such as the water solubility of CsPbBr3, and oxidation vulnerability of Sn2+, Cu+. The traditional metal halide scintillators (NaI: Tl, LaBr3, etc.) are also severely restricted by their high hygroscopicity. Here we report a new kind of lead free perovskite with excellent water and radiation stability, Rb2Sn1-x Te x Cl6. The equivalent doping of Te could break the in-phase bonding interaction between neighboring octahedra in Rb2SnCl6, and thus decrease the electron and hole dimensionality. The optimized Te content of 5% resulted in high photoluminescence quantum yield of 92.4%, and low X-ray detection limit of 0.7 µGyair s−1. The photoluminescence and radioluminescence could be maintained without any loss when immersing in water or after 480,000 Gy radiations, outperforming previous perovskite and traditional metal halides scintillators.

Recent developments in fabrication and performance of metal halide perovskite field-effect transistors

2020 ◽  
Vol 8 (47) ◽  
pp. 16691-16715
Author(s):  
Yu Liu ◽  
Ping-An Chen ◽  
Yuanyuan Hu
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Metal Halide ◽  
Device Performance ◽  
Metal Halide Perovskite ◽  
Recent Developments ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
And Performance

Recent developments in fabrication strategies and device performance of field-effect transistors based on metal halide perovskites are reviewed.

scholarly journals Comment on “ferroelectricity-free lead halide perovskites” by A. Gómez, Q. Wang, A. R. Goñi, M. Campoy-Quiles and A. Abate, Energy Environ. Sci., 2019, 12, 2537

2020 ◽  
Vol 13 (6) ◽  
pp. 1888-1891
Author(s):  
Alexander Colsmann ◽  
Tobias Leonhard ◽  
Alexander D. Schulz ◽  
Holger Röhm
Keyword(s):  
Thin Films ◽  
Metal Halide ◽  
Organic Metal ◽  
Metal Halide Perovskite ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Lead Halide ◽  
Energy Environ

This comment analyzes pitfalls when investigating piezoresponse and ferroelectricity in organic-metal halide perovskite thin films.

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.

Organo metal halide perovskites effectively photosensitize the production of singlet oxygen (1Δg)

2019 ◽  
Vol 55 (87) ◽  
pp. 13100-13103 ◽  
Author(s):  
Xian-Fu Zhang ◽  
Baomin Xu
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Singlet Oxygen ◽  
Metal Halide ◽  
Metal Halide Perovskite ◽  
Perovskite Quantum Dots ◽  
Halide Perovskites ◽  
Halide Perovskite

Metal halide perovskite quantum dots effectively generate singlet oxygen with a quantum yield of 0.34, the highest among nano semiconductor/nano metal photosensitizers.

Metal halide perovskites for resistive switching memory devices and artificial synapses

2019 ◽  
Vol 7 (25) ◽  
pp. 7476-7493 ◽  
Author(s):  
Bixin Li ◽  
Wei Hui ◽  
Xueqin Ran ◽  
Yingdong Xia ◽  
Fei Xia ◽  
...  
Keyword(s):  
Resistive Switching ◽  
Metal Halide ◽  
Memory Devices ◽  
Resistive Switching Memory ◽  
Metal Halide Perovskite ◽  
Recent Developments ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Switching Memory

This article highlights recent developments of emerging metal halide perovskite based resistive switching memory devices and artificial synapses.

Recent progress of metal halide perovskite photodetectors

2017 ◽  
Vol 5 (44) ◽  
pp. 11369-11394 ◽  
Author(s):  
Yuhui Dong ◽  
Yousheng Zou ◽  
Jizhong Song ◽  
Xiufeng Song ◽  
Haibo Zeng
Keyword(s):  
Recent Progress ◽  
Metal Halide ◽  
Device Performance ◽  
Metal Halide Perovskite ◽  
Halide Perovskites ◽  
Halide Perovskite

The metal halide perovskites have attracted unprecedented attention in the field of photodetectors. The recent progress of perovskite photodetectors for different spectral regions and applications are reviewed. The enhancement strategies of device performance are discussed as well. In addition, summary and outlook are given to boost the development of perovskite PDs.

scholarly journals Metal halide perovskite nanomaterials: synthesis and applications

2017 ◽  
Vol 8 (4) ◽  
pp. 2522-2536 ◽  
Author(s):  
Son-Tung Ha ◽  
Rui Su ◽  
Jun Xing ◽  
Qing Zhang ◽  
Qihua Xiong
Keyword(s):  
Metal Halide ◽  
Growth Mechanisms ◽  
Metal Halide Perovskite ◽  
Nanomaterials Synthesis ◽  
Halide Perovskites ◽  
Halide Perovskite

The different synthesis approaches and growth mechanisms of metal halide perovskites will be discussed along with their novel characteristics and applications.

Metal halide perovskites as an emergent catalyst for CO2 photoreduction: a minireview

2021 ◽  
Author(s):  
Melissa Méndez-Galván ◽  
Brenda Alcántar-Vázquez ◽  
Gabriela Diaz ◽  
Ilich A. Ibarra ◽  
Hugo A. Lara-García
Keyword(s):  
Metal Halide ◽  
Co2 Photoreduction ◽  
Recent Advances ◽  
Metal Halide Perovskite ◽  
Halide Perovskites ◽  
Halide Perovskite

The present minireview summarizes recent advances in the application of metal halide perovskite for CO2 photoreduction.

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