X-ray luminescence in undoped and bismuth-doped single crystal hybrid lead halide perovskites

2019 ◽  
Author(s):  
Tieh Hoa Nguyen ◽  
Chathuranga Hettiarachchi ◽  
Aozhen Xie ◽  
Marcin Witkowski ◽  
Winicjusz Drozdowski ◽  
...  
Keyword(s):  
Single Crystal ◽  
X Ray ◽  
Halide Perovskites ◽  
Lead Halide

Shedding Light on Optoelectronic Structure Rationalization and Photophysical Pathways in Lead Halide Perovskites - a Single Crystal Story

2018 ◽  
Author(s):  
Masoumeh Keshavarz ◽  
Steffen Wiedmann ◽  
Robert Küchler ◽  
Haifeng Yuan ◽  
Elke Debroye ◽  
...  
Keyword(s):  
Single Crystal ◽  
Halide Perovskites ◽  
Lead Halide

scholarly journals Detection of X-ray photons by solution-processed lead halide perovskites

2015 ◽  
Vol 9 (7) ◽  
pp. 444-449 ◽  
Author(s):  
Sergii Yakunin ◽  
Mykhailo Sytnyk ◽  
Dominik Kriegner ◽  
Shreetu Shrestha ◽  
Moses Richter ◽  
...  
Keyword(s):  
Solution Processed ◽  
X Ray ◽  
Halide Perovskites ◽  
Lead Halide

Reducing the leakage current for a CsPbBr3 detector via asymmetric area electrodes and heterostructures

2021 ◽  
Author(s):  
YingFeng Ruan ◽  
Pengju Guo ◽  
Zhiping Zheng ◽  
Qiuyun Fu ◽  
Rongda Zhou ◽  
...  
Keyword(s):  
Leakage Current ◽  
Room Temperature ◽  
Next Generation ◽  
Typical Representative ◽  
X Ray ◽  
Inorganic Lead ◽  
Halide Perovskites ◽  
Lead Halide

As a typical representative of all-inorganic lead halide perovskites, cesium lead bromine (CsPbBr3) has been regarded as the workhorse of next-generation room temperature X-ray detectors in recent years.

scholarly journals Solution‐Processed Faraday Rotators Using Single Crystal Lead Halide Perovskites

2020 ◽  
Vol 7 (7) ◽  
pp. 1902950 ◽  
Author(s):  
Randy P Sabatini ◽  
Chwenhaw Liao ◽  
Stefano Bernardi ◽  
Wenxin Mao ◽  
Matthew S. Rahme ◽  
...  
Keyword(s):  
Single Crystal ◽  
Solution Processed ◽  
Halide Perovskites ◽  
Lead Halide

scholarly journals Surface Analytical Investigation on Organometal Triiodide Perovskite

2016 ◽  
Vol 1735 ◽  
Author(s):  
Youzhen Li ◽  
Xuemei Xu ◽  
Chenggong Wang ◽  
Congong Wang ◽  
Fangyan Xie ◽  
...  
Keyword(s):  
Good Method ◽  
Atomic Ratio ◽  
Analytical Investigation ◽  
High Quality ◽  
Solar Cell Performance ◽  
X Ray ◽  
Surface And Interface ◽  
Halide Perovskites ◽  
Lead Halide ◽  
The Ideal

ABSTRACTLead halide perovskites have proven their great power conversion efficiency (PCE) in the last few years and attracted more and more attentions. Evaporation is an important method to get high quality perovskite films, especially for surface and interface investigation, which is important for the solar cell performance. In this paper, we present our investigations on growing PbI2 and CH3NH3I films by evaporation, and then CH3NH3PbI3 films by co-evaporation. X-ray photoemisson spectroscopy (XPS) was used to characterize the films. The results showed that CH3NH3I film was not stable in vacuum. Both N and I decreased in vacuum with time elapsing. PbI2 and CH3NH3PbI3 films are quite stable. The atomic ratio of CH3NH3PbI3 films (C: N: Pb: I =1.29:1.07:1.00:2.94) is very close to the ideal CH3NH3PbI3, which indicates that evaporation is a good method to get high quality perovskite films with accurate atomic ratio.

scholarly journals Progressive Polytypism and Bandgap Tuning in Azetidinium Lead Halide Perovskites

2021 ◽  
Author(s):  
Jiyu Tian ◽  
David Cordes ◽  
Alexandra Slawin ◽  
Eli Zysman-Colman ◽  
Finlay Morrison
Keyword(s):  
Linear Variation ◽  
Ambient Conditions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Vegard’S Law ◽  
The Family ◽  
Halide Perovskites ◽  
Diffraction Patterns ◽  
Bandgap Tuning ◽  
Lead Halide

<div><div><div><p>Mixed halide azetidinium lead perovskites AzPbBr<sub>3-<i>x</i></sub>X<i><sub>x</sub></i> (X = Cl or I) were obtained by mechanosynthesis. With varying halide composition from Cl- to Br- to I-; the chloride and bromide analogs both form in the hexagonal 6H polytype while the iodide adopts the 9R polytype. An intermediate 4H polytype is observed for mixed Br/I compositions. Overall the structure progresses from 6H to 4H to 9R perovskite polytype with varying halide composition. Rietveld refinement of the powder X-ray diffraction patterns revealed a linear variation in unit cell volume as a function of the average radius of the anion, which is not only observed within the solid solution of each polytype (according to Vegard’s law) but extends uniformly across all three polytypes. This is correlated with a progressive (linear) tuning of the bandgap from 3.41 to 2.00 eV. Regardless of halide, the family of azetidinium halide perovskite polytypes are highly stable, with no discernible change in properties over more than 6 months under ambient conditions</p></div></div></div>

High-sensitivity X-ray imaging of a lead halide perovskite single-crystal scintillator

2020 ◽  
Vol 45 (2) ◽  
pp. 355 ◽  
Author(s):  
Qiang Xu ◽  
Wenyi Shao ◽  
Yang Li ◽  
Zhichao Zhu ◽  
Bo Liu ◽  
...  
Keyword(s):  
Single Crystal ◽  
High Sensitivity ◽  
X Ray ◽  
X Ray Imaging ◽  
Crystal Scintillator ◽  
Halide Perovskite ◽  
Lead Halide

A high performance perovskite CH3NH3PbCl3 single crystal photodetector: benefiting from an evolutionary preparation process

2019 ◽  
Vol 7 (18) ◽  
pp. 5442-5450 ◽  
Author(s):  
Zhishuai Yuan ◽  
Wei Huang ◽  
Shoutao Ma ◽  
Gang Ouyang ◽  
Wei Hu ◽  
...  
Keyword(s):  
Single Crystal ◽  
High Performance ◽  
Optoelectronic Properties ◽  
Preparation Process ◽  
Semiconducting Materials ◽  
Inorganic Lead ◽  
Halide Perovskites ◽  
Lead Halide

Hybrid organic–inorganic lead halide perovskites (CH3NH3PbX3, X = Cl, Br, or I) are deemed to be the highest potential semiconducting materials due to their unique optoelectronic properties.

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