Impact of Zn-doping on the composition, stability, luminescence properties of silica coated all-inorganic cesium lead bromide nanocrystals and their biocompatibility

2022 ◽  
Vol 23 ◽  
pp. 100753
Author(s):  
M.R. Kar ◽  
R. Chakraborty ◽  
U. Patel ◽  
R. Chakraborty ◽  
S. Ray ◽  
...  
Keyword(s):  
Luminescence Properties ◽  
Zn Doping ◽  
Lead Bromide

Single pot synthesis of indirect band gap 2D CsPb2Br5 nanosheets from direct band gap 3D CsPbBr3 nanocrystals and the origin of their luminescence properties

Nanoscale ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 4001-4007 ◽  
Author(s):  
Paribesh Acharyya ◽  
Provas Pal ◽  
Pralok K. Samanta ◽  
Arka Sarkar ◽  
Swapan K. Pati ◽  
...  
Keyword(s):  
Band Gap ◽  
Luminescence Properties ◽  
Direct Band Gap ◽  
Amine Complexes ◽  
Lead Bromide ◽  
Direct Band ◽  
Indirect Band Gap

The origin of the luminescence properties of CsPb2Br5 is ascribed to the presence of different amorphous lead bromide amine complexes.

A three-dimensional cuprous lead bromide framework with highly efficient and stable thermochromic luminescence properties

2020 ◽  
Vol 56 (44) ◽  
pp. 5925-5928 ◽  
Author(s):  
Chang-Qing Jing ◽  
Jia-Hang Wu ◽  
Yao-Yao Cao ◽  
Hang-Xin Che ◽  
Xian-Mei Zhao ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Green Light ◽  
Luminescence Properties ◽  
Highly Efficient ◽  
Lead Bromide

The first 3D bimetallic halide of [H2DABCO]2Cu6PbBr12 based on two types of 6-connected nodes displays highly efficient thermochromic luminescence from broadband yellow to green light emissions.

Hybrid organic–inorganic lead bromide perovskite supercrystals self-assembled with l-cysteine and their good luminescence properties

2018 ◽  
Vol 6 (41) ◽  
pp. 10994-11001 ◽  
Author(s):  
Sangni Wang ◽  
Liya Zhou ◽  
Furong Huang ◽  
Youling Xin ◽  
Peng Jin ◽  
...  
Keyword(s):  
High Stability ◽  
Luminescence Properties ◽  
Strong Fluorescence ◽  
Inorganic Lead ◽  
Lead Bromide ◽  
Self Assembled

The assembled supercrystals induced by crosslinking of l-cysteine exhibit strong fluorescence, high stability and a PL lifetime of 642 ns.

Luminescence from individual dislocations in II-VI and III-V semiconductors

1991 ◽  
Vol 49 ◽  
pp. 834-835
Author(s):  
J W Steeds
Keyword(s):  
Group Iv ◽  
Luminescence Properties ◽  
Carrier Recombination ◽  
Transmission Electron ◽  
Wide Range ◽  
Basic Physics ◽  
Semiconducting Compounds ◽  
Diamond Group ◽  
Non Destructive ◽  
Technological Significance

There is a wide range of experimental results related to dislocations in diamond, group IV, II-VI, III-V semiconducting compounds, but few of these come from isolated, well-characterized individual dislocations. We are here concerned with only those results obtained in a transmission electron microscope so that the dislocations responsible were individually imaged. The luminescence properties of the dislocations were studied by cathodoluminescence performed at low temperatures (~30K) achieved by liquid helium cooling. Both spectra and monochromatic cathodoluminescence images have been obtained, in some cases as a function of temperature.There are two aspects of this work. One is mainly of technological significance. By understanding the luminescence properties of dislocations in epitaxial structures, future non-destructive evaluation will be enhanced. The second aim is to arrive at a good detailed understanding of the basic physics associated with carrier recombination near dislocations as revealed by local luminescence properties.

Effect of annealing temperature on luminescence properties of ZnWO 4 :Eu 3+ nanophosphor

2019 ◽  
Vol 14 (5) ◽  
pp. 496-500 ◽  
Author(s):  
Chunyang Li ◽  
Xiaodi Du ◽  
Yurong Shi ◽  
Zhenling Wang
Keyword(s):  
Annealing Temperature ◽  
Luminescence Properties

Growth and Thermo-luminescence Properties of Dy: Bi$lt;inf$gt;4$lt;/inf$gt;Si$lt;inf$gt;3$lt;/inf$gt;O$lt;inf$gt;12$lt;/inf$gt; Crystals

2016 ◽  
Vol 31 (10) ◽  
pp. 1068 ◽  
Author(s):  
WANG Mei-Ling ◽  
XU Jia-Yue ◽  
ZHANG Yan ◽  
CHU Yao-Qing ◽  
YANG Bo-Bo ◽  
...  
Keyword(s):  
Luminescence Properties ◽  
Thermo Luminescence

SPECTRAL LUMINESCENCE PROPERTIES OF CdS NANOCOMPOSITES IN A POLYMER SHELL

2017 ◽  
Vol 8 (2) ◽  
pp. 171-180
Author(s):  
Dm. A. Pomogailo ◽  
M. G. Spirin ◽  
V. M. Skobeeva ◽  
G. I. Dzhardimalieva ◽  
S. I. Pomogailo ◽  
...  
Keyword(s):  
Luminescence Properties ◽  
Polymer Shell ◽  
Cds Nanocomposites ◽  
Spectral Luminescence

Elucidating the Weakly Reversible Cs-Pb-Br Perovskite Nanocrystal Reaction Network with High-Throughput Maps and Transformations

2020 ◽  
Author(s):  
Jakob Dahl ◽  
Xingzhi Wang ◽  
Xiao Huang ◽  
Emory Chan ◽  
Paul Alivisatos
Keyword(s):  
High Throughput ◽  
Dynamic Equilibrium ◽  
Reaction Network ◽  
Substantial Impact ◽  
Equilibrium Behavior ◽  
Automated Method ◽  
Lead Bromide ◽  
Different Shapes ◽  
Complex Chemistry ◽  
Lead Halide

<p>Advances in automation and data analytics can aid exploration of the complex chemistry of nanoparticles. Lead halide perovskite colloidal nanocrystals provide an interesting proving ground: there are reports of many different phases and transformations, which has made it hard to form a coherent conceptual framework for their controlled formation through traditional methods. In this work, we systematically explore the portion of Cs-Pb-Br synthesis space in which many optically distinguishable species are formed using high-throughput robotic synthesis to understand their formation reactions. We deploy an automated method that allows us to determine the relative amount of absorbance that can be attributed to each species in order to create maps of the synthetic space. These in turn facilitate improved understanding of the interplay between kinetic and thermodynamic factors that underlie which combination of species are likely to be prevalent under a given set of conditions. Based on these maps, we test potential transformation routes between perovskite nanocrystals of different shapes and phases. We find that shape is determined kinetically, but many reactions between different phases show equilibrium behavior. We demonstrate a dynamic equilibrium between complexes, monolayers and nanocrystals of lead bromide, with substantial impact on the reaction outcomes. This allows us to construct a chemical reaction network that qualitatively explains our results as well as previous reports and can serve as a guide for those seeking to prepare a particular composition and shape. </p>

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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