All-inorganic lead-free metal halide perovskite quantum dots: progress and prospects

2021 ◽  
Author(s):  
Yuanqian Tang ◽  
Songzhi Tang ◽  
Ming Luo ◽  
Yanmei Guo ◽  
Yingping Zheng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Confinement ◽  
Quantum Confinement Effect ◽  
Optical Gain ◽  
Lead Free ◽  
Metal Halide Perovskite ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Free Metal ◽  
Lead Halide

Lead halide perovskite quantum dots have drawn worldwide attention due to their quantum confinement effect and excellent optical gain properties. It is worth noting that due to the toxicity of...

Precise Control of Quantum Confinement in Cesium Lead Halide Perovskite Quantum Dots via Thermodynamic Equilibrium

Nano Letters ◽  
2018 ◽  
Vol 18 (6) ◽  
pp. 3716-3722 ◽  
Author(s):  
Yitong Dong ◽  
Tian Qiao ◽  
Doyun Kim ◽  
David Parobek ◽  
Daniel Rossi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Thermodynamic Equilibrium ◽  
Quantum Confinement ◽  
Precise Control ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Lead Halide

scholarly journals Exploring the physics of cesium lead halide perovskites quantum dots via Bayesian inference of the photoluminescence spectra in automated experiment

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Amanda Heimbrook ◽  
Kate Higgins ◽  
Sergei V. Kalinin ◽  
Mahshid Ahmadi
Keyword(s):  
Quantum Dots ◽  
Bayesian Inference ◽  
Metal Halide ◽  
Automated Synthesis ◽  
Metal Halide Perovskite ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Bayesian Inference Framework ◽  
Automated Platform ◽  
Lead Halide

Abstract The unique optoelectronic properties of metal halide perovskite quantum dots (QDs) make them promising candidates for applications in light-emitting diodes (LEDs), scintillators, and other photonic devices. The automated micropipetting synthesis platform equipped with an optical reader enables the opportunity for high throughput synthesis and photoluminescent (PL) characterization of metal halide perovskite QDs for the first time. Here, we explore the compositional dependence of the PL behavior and stability of the combinatorial library of cesium lead halide (CsPbX3) perovskites QDs via the automated platform. To study the stability of synthesized QDs in the binary and ternary configurations, we study the time-dependent PL properties using previously developed machine learning analysis. To systematically explore the PL behavior in the ternary CsPbX3 QDs system, we introduce the Bayesian inference framework that allows the probabilistic fit of multiple models to the PL data and establishes both optimal model and model parameter robustly. Furthermore, these behaviors can be used as a control parameter for the navigation of the multidimensional compositional spaces in automated synthesis. This analysis shows the nonuniformity of the PL peak behavior in the ternary CsPbX3 QDs system. Further, the analysis confirms narrow size distribution and good quality of CsPbBr3 QDs alloyed with low concentrations of iodide and chloride. We note that Bayesian Inference fit parameters can be further used as a control signal for navigation of the chemical spaces in automated synthesis.

Lead-Free, Blue Emitting Bismuth Halide Perovskite Quantum Dots

2016 ◽  
Vol 55 (48) ◽  
pp. 15012-15016 ◽  
Author(s):  
Meiying Leng ◽  
Zhengwu Chen ◽  
Ying Yang ◽  
Zha Li ◽  
Kai Zeng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Lead Free ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite

Burstein-Moss shift of lead halide perovskite quantum dots induced by electron injection from graphene oxide

2021 ◽  
Vol 545 ◽  
pp. 149003
Author(s):  
Shengnan Ni ◽  
Haijun Qin ◽  
Jianfeng Wen ◽  
Xinyu Li ◽  
Ming Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Electron Injection ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Lead Halide

Heterogeneous Post-Passivation of Inorganic Cesium Lead Halide Perovskite Quantum Dots for Efficient Electroluminescent Devices

2021 ◽  
Author(s):  
Xuefei Li ◽  
Qingqing Yang ◽  
Liuqing Yang ◽  
Shumeng Wang ◽  
Junqiao Ding ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electroluminescent Devices ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Lead Halide

A heterogeneous post-passivation has been demonstrated by using formamidiniu bromide (FABr) to compensate the surface bromo vacancy of inorganic cesium lead halide perovskite quantum dots (QDs). Benefitting from its limited...

Thermally Stable Copper(II)-Doped Cesium Lead Halide Perovskite Quantum Dots with Strong Blue Emission

2019 ◽  
Vol 10 (5) ◽  
pp. 943-952 ◽  
Author(s):  
Chenghao Bi ◽  
Shixun Wang ◽  
Qiang Li ◽  
Stephen V. Kershaw ◽  
Jianjun Tian ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Blue Emission ◽  
Thermally Stable ◽  
Perovskite Quantum Dots ◽  
Strong Blue Emission ◽  
Halide Perovskite ◽  
Lead Halide
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