Polymer coated template confinement CsPbBr3 perovskite quantum dots composite

Nanoscale ◽  
2021 ◽  
Author(s):  
Jianhua Shen ◽  
Yu Wang ◽  
Yihua Zhu ◽  
Yiqin Gong ◽  
Chunzhong Li
Keyword(s):  
Quantum Dots ◽  
Photophysical Properties ◽  
Metal Halide ◽  
Perovskite Quantum Dots ◽  
Halide Perovskites ◽  
Poor Stability

Metal halide perovskites show abundant photophysical properties and great potential in photovoltaic and electroluminescence devices, but its poor stability is an obvious shortcoming. Here, we successfully synthesis polymer-coated CsPbBr3 quantum...

Organo metal halide perovskites effectively photosensitize the production of singlet oxygen (1Δg)

2019 ◽  
Vol 55 (87) ◽  
pp. 13100-13103 ◽  
Author(s):  
Xian-Fu Zhang ◽  
Baomin Xu
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Singlet Oxygen ◽  
Metal Halide ◽  
Metal Halide Perovskite ◽  
Perovskite Quantum Dots ◽  
Halide Perovskites ◽  
Halide Perovskite

Metal halide perovskite quantum dots effectively generate singlet oxygen with a quantum yield of 0.34, the highest among nano semiconductor/nano metal photosensitizers.

scholarly journals Encapsulation of Recrystallized Inorganic Perovskite Quantum Dots in Nonwoven Fluoropolymer Fibers

2021 ◽  
Vol 2086 (1) ◽  
pp. 012131
Author(s):  
M Baeva ◽  
V Neplokh ◽  
D I Markina ◽  
A M Pavlov ◽  
D A Kirilenko ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Industrial Applications ◽  
Metal Halide ◽  
Polymer Fibers ◽  
Commercial Products ◽  
Inorganic Perovskite ◽  
Perovskite Materials ◽  
Perovskite Quantum Dots ◽  
Halide Perovskites

Abstract Since emerging Metal Halide Perovskites were attracting elevated attention from scientific and industrial communities. Although, we still yet to see commercial products based on perovskite materials a significant body of work has been already done. Here we present our own method of Metal Halide Perovskites integration into possible industrial applications. Our way of Perovskite Quantum Dots encapsulation in polymer fibers provides exceptional water and ambient stability as well as optimal photoluminescence.

scholarly journals All-inorganic quantum dot assisted enhanced charge extraction across the interfaces of bulk organo-halide perovskites for efficient and stable pin-hole free perovskite solar cells

2019 ◽  
Vol 10 (41) ◽  
pp. 9530-9541 ◽  
Author(s):  
Dibyendu Ghosh ◽  
Dhirendra K. Chaudhary ◽  
Md. Yusuf Ali ◽  
Kamlesh Kumar Chauhan ◽  
Sayan Prodhan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Quantum Dot ◽  
Grain Boundaries ◽  
Surface Engineering ◽  
Perovskite Solar Cells ◽  
Inorganic Perovskite ◽  
Perovskite Quantum Dots ◽  
Halide Perovskites ◽  
Trapping Sites

Grain boundaries in bulk perovskite films are considered as giant trapping sites for photo-generated carriers. Surface engineering via inorganic perovskite quantum dots has been employed for creating monolithically grained, pin-hole free perovskite films.

scholarly journals Photocatalytic and Photoelectrochemical Degradation of Organic Compounds with All-Inorganic Metal Halide Perovskite Quantum Dots

2019 ◽  
Vol 10 (3) ◽  
pp. 630-636 ◽  
Author(s):  
Drialys Cardenas-Morcoso ◽  
Andrés F. Gualdrón-Reyes ◽  
Ana Beatriz Ferreira Vitoreti ◽  
Miguel García-Tecedor ◽  
Seog Joon Yoon ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Organic Compounds ◽  
Metal Halide ◽  
Metal Halide Perovskite ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite

scholarly journals Colloidal Quantum Dots and Metal Halide Perovskite Hybridization for Solar Cells Stability and Performance Enhancement

2021 ◽  
Author(s):  
Dong Yan ◽  
Mengxia Liu ◽  
Zhe Li ◽  
Bo Hou
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
High Performance ◽  
Performance Enhancement ◽  
Metal Halide ◽  
Colloidal Quantum Dots ◽  
Metal Halide Perovskite ◽  
Photoactive Materials ◽  
Halide Perovskites ◽  
And Performance

Metal halide perovskites and colloidal quantum dots (QDs) are two emerging class of photoactive materials that has been attracted considerable attention for next-generation high-performance solution-processed solar cells. In particular, the...

scholarly journals Synthetic and Post-Synthetic Strategies to Improve Photoluminescence Quantum Yields in Perovskite Quantum Dots

Catalysts ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 957
Author(s):  
ChaeHyun Lee ◽  
Soo Jeong Lee ◽  
YeJi Shin ◽  
Yeonsu Woo ◽  
Sung-Hwan Han ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Raw Materials ◽  
Photophysical Properties ◽  
Optoelectronic Devices ◽  
Charge Recombination ◽  
Quantum Yields ◽  
Recrystallization Process ◽  
Recombination Processes ◽  
Perovskite Quantum Dots ◽  
Efficient Charge

Making high-quality raw materials is the key to open the versatile potential of next generation materials. All-inorganic CsPbX3 (X: Cl−, Br−, and/or I−) perovskite quantum dots (PQDs) have been applied in various optoelectronic devices, such as photocatalysis, hydrogen evolution, solar cells, and light-emitting diodes, due to their outstanding photophysical properties, such as high photoluminescence quantum yield (PLQY), absorption cross-section, efficient charge separation, and so on. Specifically, for further improvement of the PLQY of the PQDs, it is essential to diminish the non-radiative charge recombination processes. In this work, we approached two ways to control the non-radiative charge recombination processes through synthetic and post-synthetic processes. Firstly, we proposed how refinement of the conventional recrystallization process for PbI2 contributes to higher PLQY of the PQDs. Secondly, after halide exchange from CsPbI3 PQDs to CsPbBr3, through an in situ spectroelectrochemical setup, we monitored the positive correlation between bromide deposition of on the surface of the perovskite and photoluminescence improvement of the CsPbBr3 perovskite film through electrodeposition. These two strategies could provide a way to enhance the photophysical properties of the perovskites for application to various perovskite-based optoelectronic devices.

scholarly journals Organo Metal Halide Perovskites Effective Ly Photosensitize the Production of Singlet Oxygen (1Δg)

2019 ◽  
Author(s):  
XIan-Fu Zhang ◽  
Baomin Xu
Keyword(s):  
Quantum Dots ◽  
Singlet Oxygen ◽  
High Performance ◽  
Metal Halide ◽  
Oxygen Generation ◽  
Singlet Oxygen Generation ◽  
Metal Halide Perovskite ◽  
Halide Perovskites ◽  
New Applications ◽  
Triplet Excitons

<p>Metal halide perovskite (MHP) materials are under extensive examination for various high performance optoelectronic applications, but their photosensitizing utilization for singlet oxygen generation has not been explored. Based on the observed characteristic NIR phosphorescence of singlet oxygen and the photosensitized decomposition of a specific singlet oxygen chemical trapper (diphenylisobenzofuran), we show herby that MAPbBr<sub>3</sub> quantum dots can significantly generate singlet oxygen with the quantum yield up to 0.34, which is the highest among nano semiconductor and nano metal material types of singlet oxygen photosensitizers. Further more, MAPbBr<sub>3</sub> quantum dots show good stability towards singlet oxygen. The mechanism of MHP as a singlet oxygen photosensitizer is also suggested to be due to triplet excitons. This finding expands new applications of MHPs in PDT, antiviral and antibacterial treatments, and pharmaceutical industry.</p>

Metal halide perovskite quantum dots for amphiprotic bio-imaging

2022 ◽  
Vol 452 ◽  
pp. 214313
Author(s):  
Huiwang Lian ◽  
Yang Li ◽  
S. Saravanakumar ◽  
Huan Jiang ◽  
Zhanjun Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Metal Halide ◽  
Metal Halide Perovskite ◽  
Perovskite Quantum Dots ◽  
Bio Imaging ◽  
Halide Perovskite

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.

Sign in / Sign up

Export Citation Format

Share Document