A relationship between the surface composition and spectroscopic properties of cesium lead bromide (CsPbBr3) perovskite nanocrystals: focusing on photoluminescence efficiency

Nanoscale ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 1563-1570 ◽  
Author(s):  
Jumi Park ◽  
Youngsik Kim ◽  
Sujin Ham ◽  
Ju Young Woo ◽  
Taehee Kim ◽  
...  
Keyword(s):  
Surface Composition ◽  
Spectroscopic Properties ◽  
Perovskite Nanocrystals ◽  
Lead Bromide ◽  
Photoluminescence Efficiency

This work explored the role of ZnBr2 in the surface composition and photoluminescence stability of CsPbBr3 nanocrystals.

Insights into the role of the lead/surfactant ratio in the formation and passivation of cesium lead bromide perovskite nanocrystals

Nanoscale ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 623-637 ◽  
Author(s):  
Roberto Grisorio ◽  
Elisabetta Fanizza ◽  
Ignazio Allegretta ◽  
Davide Altamura ◽  
Marinella Striccoli ◽  
...  
Keyword(s):  
Surface Passivation ◽  
Perovskite Nanocrystals ◽  
Lead Bromide

The lead/surfactant ratio controls the formation, composition and surface passivation of cesium lead bromide perovskite nanocrystals.

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>

The role of surface chemical states on the photocatalytic behavior of all-inorganic mixed halide perovskite nanocrystals

2019 ◽  
Author(s):  
Andrés Fabián Gualdrón-Reyes ◽  
Iván Mora-Seró ◽  
Eliseo Amado-González ◽  
Jorge-Enrique Rueda-P ◽  
Rogelio Ospina ◽  
...  
Keyword(s):  
Surface Chemical ◽  
Perovskite Nanocrystals ◽  
Chemical States ◽  
Halide Perovskite

Bromopropane as a Novel Bromine Precursor for the Completely Amine Free Colloidal Synthesis of Ultra-Stable and Highly Luminescent Green-Emitting Cesium Lead Bromide (CsPbBr3) Perovskite Nanocrystals

Nanoscale ◽  
2021 ◽  
Author(s):  
Syed Akhil ◽  
V.G.Vasavi Dutt ◽  
Nimai Mishra
Keyword(s):  
Optoelectronic Devices ◽  
Colloidal Synthesis ◽  
Ambient Conditions ◽  
Active Materials ◽  
Perovskite Nanocrystals ◽  
Lead Bromide ◽  
Halide Perovskite ◽  
Lead Halide ◽  
Poor Stability

Recently lead halide perovskite nanocrystals (PNCs) have attracted intense interest as promising active materials for optoelectronic devices. However, their extensive applications are still hampered by poor stability in ambient conditions....

The role of EuBr2 in modulating the crystallization and luminescence of caesium lead bromide

2021 ◽  
Vol 137 ◽  
pp. 111191
Author(s):  
Ji Lei ◽  
Lo-Yueh Chang ◽  
Zhaohui Dong ◽  
Lijia Liu
Keyword(s):  
Lead Bromide

Assessment of role of iron ions on the physical and spectroscopic properties of multi-component Na2O−PbO−Bi2O3−SiO2 glass ceramics

2017 ◽  
Vol 91 (1) ◽  
pp. 92-107 ◽  
Author(s):  
M. V. Sambasiva Rao ◽  
A. Suneel Kumar ◽  
G. Chinna Ram ◽  
Ch. Tirupataiah ◽  
D. Krishna Rao
Keyword(s):  
Glass Ceramics ◽  
Spectroscopic Properties ◽  
Iron Ions ◽  
Sio2 Glass

Surface composition of Pt-Rh alloys; The role of lattice vibrational entropy

1986 ◽  
Vol 178 (1-3) ◽  
pp. A678
Author(s):  
A.D. Van Langeveld ◽  
J.W. Niemantsverdriet
Keyword(s):  
Surface Composition ◽  
Vibrational Entropy
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