scholarly journals Metal Halide Perovskite Nanosheet for X-ray High-Resolution Scintillation Imaging Screens

ACS Nano ◽  
2019 ◽  
Vol 13 (2) ◽  
pp. 2520-2525 ◽  
Author(s):  
Yuhai Zhang ◽  
Ruijia Sun ◽  
Xiangyu Ou ◽  
Kaifang Fu ◽  
Qiushui Chen ◽  
...  
Keyword(s):  
High Resolution ◽  
Metal Halide ◽  
X Ray ◽  
Metal Halide Perovskite ◽  
Halide Perovskite

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.

Metal halide perovskite for X-ray and gamma-ray detection

2020 ◽  
Author(s):  
Jingjing Zhao ◽  
Yuanxiang Feng ◽  
Lei Pan ◽  
Lei R. Cao ◽  
Jinsong Huang
Keyword(s):  
Gamma Ray ◽  
Metal Halide ◽  
X Ray ◽  
Metal Halide Perovskite ◽  
Halide Perovskite

High Performance X-ray to Current Converters Fabricated Via Sintering or Melting of a Metal-halide Perovskite

2019 ◽  
Author(s):  
Gebhard J. Matt ◽  
Ievgen Levchuk ◽  
Judith Knüttel ◽  
Shreetu Shrestha ◽  
Johannes Dallmann ◽  
...  
Keyword(s):  
High Performance ◽  
Metal Halide ◽  
X Ray ◽  
Metal Halide Perovskite ◽  
Halide Perovskite

High Performance X-ray to Current Converters Fabricated Via Sintering or Melting of a Metal-halide Perovskite

2019 ◽  
Author(s):  
Gebhard J. Matt ◽  
Ievgen Levchuk ◽  
Judith Knüttel ◽  
Shreetu Shrestha ◽  
Johannes Dallmann ◽  
...  
Keyword(s):  
High Performance ◽  
Metal Halide ◽  
X Ray ◽  
Metal Halide Perovskite ◽  
Halide Perovskite

scholarly journals X-ray study of anisotropically shaped metal halide perovskite nanoparticles in tubular pores

2018 ◽  
Vol 113 (25) ◽  
pp. 251901
Author(s):  
Janina Melanie Roemer ◽  
Stepan Demchyshyn ◽  
Anton Böhm ◽  
Olof Gutowski ◽  
Kilian Frank ◽  
...  
Keyword(s):  
Metal Halide ◽  
X Ray ◽  
Metal Halide Perovskite ◽  
Halide Perovskite ◽  
Perovskite Nanoparticles

scholarly journals Inch-Sized Thin Metal Halide Perovskite Single-Crystal Wafers for Sensitive X-Ray Detection

2022 ◽  
Vol 9 ◽  
Author(s):  
Anbo Feng ◽  
Shengdan Xie ◽  
Xiuwei Fu ◽  
Zhaolai Chen ◽  
Wei Zhu
Keyword(s):  
Single Crystal ◽  
Single Crystals ◽  
Indium Tin Oxide ◽  
High Sensitivity ◽  
Metal Halide ◽  
Large Area ◽  
X Ray ◽  
Metal Halide Perovskite ◽  
Imaging Application ◽  
Halide Perovskite

Metal halide perovskite single crystals are a promising candidate for X-ray detection due to their large atomic number and high carrier mobility and lifetime. However, it is still challenging to grow large-area and thin single crystals directly onto substrates to meet real-world applications. In this work, millimeter-thick and inch-sized methylammonium lead tribromide (MAPbBr3) single-crystal wafers are grown directly on indium tin oxide (ITO) substrates through controlling the distance between solution surface and substrates. The single-crystal wafers are polished and treated with O3 to achieve smooth surface, lower trap density, and better electrical properties. X-ray detectors with a high sensitivity of 632 µC Gyair−1 cm−2 under –5 V and 525 µC Gyair−1 cm−2 under –1 V bias can be achieved. This work provides an effective way to fabricate substrate-integrated, large-area, and thickness-controlled perovskite single-crystal X-ray detectors, which is instructive for developing imaging application based on perovskite single crystals.

Hollow Metal Halide Perovskite Nanocrystals with Efficient Blue Emissions

2019 ◽  
Author(s):  
Michael Worku ◽  
Yu Tian ◽  
Chenkun Zhou ◽  
Haoran Lin ◽  
Maya Chaaban ◽  
...  
Keyword(s):  
Precursor Solution ◽  
Visible Spectral Region ◽  
Metal Halide ◽  
Synthetic Control ◽  
Perovskite Nanocrystals ◽  
Highly Efficient ◽  
Quantum Confinement Effects ◽  
Metal Halide Perovskite ◽  
Lead Bromide ◽  
Halide Perovskite

Metal halide perovskite nanocrystals (NCs) have emerged as a new generation light emitting materials with narrow emissions and high photoluminescence quantum efficiencies (PLQEs). Various types of perovskite NCs, e.g. platelets, wires, and cubes, have been discovered to exhibit tunable emissions across the whole visible spectral region. Despite remarkable advances in the field of metal halide perovskite NCs over the last few years, many nanostructures in inorganic NCs have yet been realized in metal halide perovskites and producing highly efficient blue emitting perovskite NCs remains challenging and of great interest. Here we report for the first time the discovery of highly efficient blue emitting cesium lead bromide perovskite (CsPbBr3) NCs with hollow structures. By facile solution processing of cesium lead bromide perovskite precursor solution containing additional ethylenediammonium bromide and sodium bromide, in-situ formation of hollow CsPbBr3 NCs with controlled particle and pore sizes is realized. Synthetic control of hollow nanostructures with quantum confinement effects results in color tuning of CsPbBr3 NCs from green to blue with high PLQEs of up to 81 %.<br><div><br></div>

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