Synthesis and CO2 Photoreduction of Lead-Free Cesium Bismuth Halide Perovskite Nanocrystals

2021 ◽  
Author(s):  
Daofu Wu ◽  
Xusheng Zhao ◽  
Yanyi Huang ◽  
Junan Lai ◽  
Jiayu Yang ◽  
...  
Keyword(s):  
Lead Free ◽  
Co2 Photoreduction ◽  
Perovskite Nanocrystals ◽  
Halide Perovskite

Highly Emissive Halide Perovskite Nanocrystals: From Lead to Lead-Free

CrystEngComm ◽  
2021 ◽  
Author(s):  
Chunlong Li ◽  
Jie Li ◽  
Zhengping Li ◽  
Huayong Zhang ◽  
Yangyang Dang ◽  
...  
Keyword(s):  
Charge Carriers ◽  
Lead Free ◽  
Quantum Yields ◽  
Local Management ◽  
Perovskite Nanocrystals ◽  
Halide Perovskites ◽  
Halide Perovskite

Nanostructured halide perovskites have highly yielded record LEDs due to their higher versatility in the local management of charge carriers, which has enabled photoluminescence quantum yields (PLQYs) close to 100%....

scholarly journals Moisture-assisted Near-UV Emission Enhancement of Lead-free Cs4CuIn2Cl12 Double Perovskite Nanocrystals

2021 ◽  
Author(s):  
Maning Liu ◽  
Sri Kasi Matta ◽  
Anastasia Matuhina ◽  
G. Krishnamurthy Grandhi ◽  
Harri Ali-Löytty ◽  
...  
Keyword(s):  
Double Perovskite ◽  
Lead Free ◽  
Colloidal Synthesis ◽  
Morphological Transformation ◽  
Perovskite Nanocrystals ◽  
Uv Emission ◽  
Radiative Transitions ◽  
Emission Enhancement ◽  
Wide Range ◽  
Halide Perovskite

Lead-based halide perovskite nanocrystals (NCs) are recognized as emerging emissive materials with superior photoluminescence (PL) properties. However, the toxicity of lead and the swift chemical decomposition under atmospheric moisture severely hinder their commercialization process. Herein, we report the first colloidal synthesis of lead-free Cs4CuIn2Cl12 layered double perovskite NCs via a facile moisture-assisted hot-injection method stemming from relatively nontoxic precursors. While moisture is typically detrimental to NC synthesis, we demonstrate that the presence of water molecules in Cs4CuIn2Cl12 synthesis enhances the PL quantum yield (mainly in the near-UV range), induces a morphological transformation from 3D nanocubes to 2D nanoplatelets, and converts the dark transitions to radiative transitions for the observed self-trapped excitons relaxation. This work paves the way for further studies on the moisture-assisted synthesis of novel lead-free halide perovskite NCs for a wide range of applications.

scholarly journals Water-Assisted Synthesis of Lead-Free Cu Based Fluorescent Halide Perovskite Nanostructures

2021 ◽  
Author(s):  
Hari Shankar ◽  
Abha Jha ◽  
Prasenjit Kar
Keyword(s):  
Lead Free ◽  
Pb Toxicity ◽  
Perovskite Nanocrystals ◽  
Emission Properties ◽  
Commercial Use ◽  
Halide Perovskite ◽  
Lead Halide

Lead halide perovskite nanocrystals (NCs) are eminent for their emission properties, but lead (Pb) toxicity and moisture instability become an impediment to their commercial use. To resolve these obstacles and...

Lead‐Free, Air‐Stable All‐Inorganic Cesium Bismuth Halide Perovskite Nanocrystals

2017 ◽  
Vol 129 (41) ◽  
pp. 12645-12649 ◽  
Author(s):  
Bin Yang ◽  
Junsheng Chen ◽  
Feng Hong ◽  
Xin Mao ◽  
Kaibo Zheng ◽  
...  
Keyword(s):  
Lead Free ◽  
Perovskite Nanocrystals ◽  
Free Air ◽  
Halide Perovskite

Lead‐Free, Air‐Stable All‐Inorganic Cesium Bismuth Halide Perovskite Nanocrystals

2017 ◽  
Vol 56 (41) ◽  
pp. 12471-12475 ◽  
Author(s):  
Bin Yang ◽  
Junsheng Chen ◽  
Feng Hong ◽  
Xin Mao ◽  
Kaibo Zheng ◽  
...  
Keyword(s):  
Lead Free ◽  
Perovskite Nanocrystals ◽  
Free Air ◽  
Halide Perovskite

The role of gold oxidation state in the synthesis of Au-CsPbX3 heterostructure or lead-free Cs2AuIAuIIIX6 perovskite nanoparticles

Nanoscale ◽  
2019 ◽  
Vol 11 (39) ◽  
pp. 18109-18115 ◽  
Author(s):  
Freddy A. Rodríguez Ortiz ◽  
Benjamin J. Roman ◽  
Je-Ruei Wen ◽  
Noel Mireles Villegas ◽  
David F. Dacres ◽  
...  
Keyword(s):  
Cation Exchange ◽  
Oxidation State ◽  
Lead Free ◽  
Gold Deposition ◽  
Perovskite Nanocrystals ◽  
Halide Perovskite ◽  
Perovskite Nanoparticles ◽  
Lead Halide

The oxidation state of the Au ions determines whether cation exchange or gold deposition occurs when an Au salt is added to solutions of all-inorganic cesium lead halide perovskite nanocrystals.

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