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 Moisture-Assisted near-UV Emission Enhancement of Lead-Free Cs4CuIn2Cl12 Double Perovskite Nanocrystals

Nano Letters ◽  
2021 ◽  
Author(s):  
Maning Liu ◽  
Sri Kasi Matta ◽  
Harri Ali-Löytty ◽  
Anastasia Matuhina ◽  
G. Krishnamurthy Grandhi ◽  
...  
Keyword(s):  
Double Perovskite ◽  
Lead Free ◽  
Perovskite Nanocrystals ◽  
Uv Emission ◽  
Emission Enhancement

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....

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%....

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

scholarly journals Colloidal Synthesis of Lead-free Cs2TiBr6-xIx Perovskite Nanocrystals

2021 ◽  
Author(s):  
Shanti Maria Liga ◽  
Gerasimos Konstantatos
Keyword(s):  
Solar Cells ◽  
Power Conversion ◽  
Lead Free ◽  
Colloidal Synthesis ◽  
Optoelectronic Materials ◽  
Perovskite Nanocrystals ◽  
Halide Perovskites ◽  
Conversion Efficiencies

Cesium titanium halide perovskites are novel lead-free optoelectronic materials that have attracted attention in the last two years for their application in solar cells with power conversion efficiencies reaching 3.3%....

Lead-Free Direct Band Gap Double-Perovskite Nanocrystals with Bright Dual-Color Emission

2018 ◽  
Vol 140 (49) ◽  
pp. 17001-17006 ◽  
Author(s):  
Bin Yang ◽  
Xin Mao ◽  
Feng Hong ◽  
Weiwei Meng ◽  
Yuxuan Tang ◽  
...  
Keyword(s):  
Band Gap ◽  
Double Perovskite ◽  
Lead Free ◽  
Perovskite Nanocrystals ◽  
Direct Band Gap ◽  
Dual Color ◽  
Direct Band ◽  
Color Emission

Ultrasound synthesis of lead halide perovskite nanocrystals

2016 ◽  
Vol 4 (45) ◽  
pp. 10625-10629 ◽  
Author(s):  
Dong Myung Jang ◽  
Duk Hwan Kim ◽  
Kidong Park ◽  
Jeunghee Park ◽  
Jong Woon Lee ◽  
...  
Keyword(s):  
Ultrasound Irradiation ◽  
Perovskite Nanocrystals ◽  
Wide Range ◽  
Halide Perovskite ◽  
Lead Halide

Lead halide perovskite nanocrystals with a wide range of compositions were synthesized using ultrasound irradiation.

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