Phase Regulation Strategy of Perovskite Nanocrystals from 1D Orthomorphic NH 4 PbI 3 to 3D Cubic (NH 4 ) 0.5 Cs 0.5 Pb(I 0.5 Br 0.5 ) 3 Phase Enhances Photoluminescence

2019 ◽  
Vol 131 (34) ◽  
pp. 11768-11772 ◽  
Author(s):  
Chao Wang ◽  
Yue Liu ◽  
Xia Feng ◽  
Chenyang Zhou ◽  
Yalan Liu ◽  
...  
Keyword(s):  
Perovskite Nanocrystals ◽  
Phase Regulation

Ultrafast photo-induced processes in perovskite nanocrystals

2020 ◽  
Author(s):  
Goutam Ghosh ◽  
Amitava Patra ◽  
Arnab Ghosh ◽  
Srijon Ghosh
Keyword(s):  
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

High Performance Optoelectronic Devices Based on Bright Perovskite Nanocrystals Synthesized at Room Temperature

2018 ◽  
Author(s):  
Sotirios Christodoulou ◽  
Francesco Di Stasio ◽  
Santanu Pradhan ◽  
Inigo Ramiro ◽  
Yu Bi ◽  
...  
Keyword(s):  
High Performance ◽  
Room Temperature ◽  
Optoelectronic Devices ◽  
Perovskite Nanocrystals
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