scholarly journals A liquid phase anion-exchange approach to high-quality all-inorganic halide perovskite micro- and nanowires

2021 ◽  
Author(s):  
Huafeng Li ◽  
Jing Li ◽  
Yanan Bao ◽  
Jianliang Li ◽  
Chengyu He ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Anion Exchange ◽  
Critical Parameters ◽  
Temperature Reaction ◽  
High Quality ◽  
Broad Application ◽  
Visible Spectra ◽  
Halide Perovskite ◽  
Application Prospects ◽  
Anion Exchange Reaction

AbstractAll-inorganic halide perovskite nanowires (NWs) are promising materials due to they have broad application prospects in the field of optoelectronics, with mixed-halide perovskite nanowires can change the optoelectronic properties by adjusting the halide ratio. Here, we experimentally investigated the two-process governed anion-exchange reaction in single-crystalline CsPbX3 micro- and nanowires. The critical parameters affecting the outcome of the reaction are identified as the reaction temperature, reaction time, and precursor concentrations. Upon examining the photoluminescence and morphology of the NWs, high-quality NWs were obtained by optimizing these critical parameters. The bandgap of the NWs can be tuned over the entire visible spectra (430–700 nm). In addition, photodetectors incorporating single NWs were fabricated, which demonstrated excellent responsivity under illumination. Our results expand the validity of liquid-phase anion exchange to the microscale, and lay the basis for liquid-processed optoelectronics and displays.

Generation of cesium lead halide perovskite nanocrystals via a serially-integrated microreactor system: Sequential anion exchange reaction

2020 ◽  
Vol 384 ◽  
pp. 123316
Author(s):  
Sung-Min Kang ◽  
Bumjun Park ◽  
Ganji Seeta Rama Raju ◽  
Seungmin Baek ◽  
Sk. Khaja Hussain ◽  
...  
Keyword(s):  
Exchange Reaction ◽  
Anion Exchange ◽  
Perovskite Nanocrystals ◽  
Halide Perovskite ◽  
Lead Halide ◽  
Anion Exchange Reaction

Design rules for the broad application of fast (<1 s) methylamine vapor based, hybrid perovskite post deposition treatments

RSC Advances ◽  
2016 ◽  
Vol 6 (33) ◽  
pp. 27475-27484 ◽  
Author(s):  
Ting Zhao ◽  
Spencer T. Williams ◽  
Chu-Chen Chueh ◽  
Dane W. deQuilettes ◽  
Po-Wei Liang ◽  
...  
Keyword(s):  
Rapid Development ◽  
Metal Halide ◽  
High Quality ◽  
Design Rules ◽  
Broad Application ◽  
Hybrid Perovskite ◽  
Metal Halide Perovskite ◽  
Halide Perovskite ◽  
Quality Material ◽  
Post Deposition

While organo-metal halide perovskite photovoltaics have seen rapid development, growth of high quality material remains a challenge.

scholarly journals Natural Plant Extracts and Compounds for Rheumatoid Arthritis Therapy

Medicina ◽  
2021 ◽  
Vol 57 (3) ◽  
pp. 266
Author(s):  
Xiangyu Zhao ◽  
Young-Rok Kim ◽  
Yunhui Min ◽  
Yaping Zhao ◽  
Kyoungtag Do ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Plant Extracts ◽  
Research Progress ◽  
Immune Mechanism ◽  
High Quality ◽  
Natural Plant ◽  
Broad Application ◽  
Complex Functions ◽  
Application Prospects ◽  
Pro Inflammatory Cytokines

Natural plant extracts and compounds (NPECs), which originate from herbs or plants, have been used in the clinical treatment of rheumatoid arthritis (RA) for many years. Over the years, many scientists have carried out a series of studies on the treatment of RA by NPEC. They found a high quantity of active NPECs with broad application prospects. In view of various complex functions of these NPECs, exploring their potential as medicines for RA treatment will be beneficial for RA patients. Thus, to help advance the development of high-quality NPECs for RA, we herein aimed to review the research progress of NPECs in the treatment of RA in recent years. Our findings showed that, from the pharmacological perspective, natural plant extracts or mixed herbal compounds effectively regulate the immune system to alleviate RA by inhibiting pro-inflammatory cytokines. Further, individualized medication can be applied according to each patient’s physical condition. However, the pathogenesis of RA and its immune mechanism has not been fully understood and requires further studies.

scholarly journals Anion Exchange Reaction in Halide Perovskite Single Crystals Structured by Laser Pulses

2021 ◽  
Vol 2015 (1) ◽  
pp. 012085
Author(s):  
A Zhizhchenko Yu ◽  
M Masharin ◽  
A Pushkarev ◽  
A A Kuchmizhak ◽  
S V Makarov ◽  
...  
Keyword(s):  
Optical Properties ◽  
Laser Ablation ◽  
Exchange Reaction ◽  
Anion Exchange ◽  
Femtosecond Laser Ablation ◽  
Laser Pulses ◽  
Optical Devices ◽  
Chemical Processing ◽  
Halide Perovskite ◽  
Anion Exchange Reaction

Abstract In this work, we carry out chemical processing of halide perovskite (CsPbBr3) microplates, where microlenses can be formed on surface by laser ablation by femtosecond laser ablation. Namely, we perform anion exchange reaction and observe spectral tuning of the microplates optical properties. We believe this effect will open new opportunities for tunable and reconfigurable micro-optical devices.

Formation of highly luminescent cesium bismuth halide perovskite quantum dots tuned by anion exchange

2018 ◽  
Vol 54 (30) ◽  
pp. 3779-3782 ◽  
Author(s):  
Yongbing Lou ◽  
Mengying Fang ◽  
Jinxi Chen ◽  
Yixin Zhao
Keyword(s):  
Thermal Stability ◽  
Quantum Dots ◽  
Exchange Reaction ◽  
Anion Exchange ◽  
Wavelength Range ◽  
Quantum Yields ◽  
Excellent Thermal Stability ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Anion Exchange Reaction

Cs3Bi2Br9 quantum dots, with excellent thermal stability and photoluminescence quantum yields of up to 22%, have been prepared. A PL wavelength range from 380 to 526 nm could be achieved through a fast reversible anion exchange reaction.

scholarly journals Synthesis and performance of ZnO quantum dots water-based fluorescent ink for anti-counterfeiting applications

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xi Chen ◽  
Qi Wang ◽  
Xiao-Ju Wang ◽  
Jie Li ◽  
Guo-Bin Xu
Keyword(s):  
Quantum Dots ◽  
Acid Resistance ◽  
High Quality ◽  
Broad Application ◽  
Water Based ◽  
Green Packaging ◽  
Zno Quantum Dots ◽  
And Performance ◽  
Zno Qds ◽  
Application Prospects

AbstractIn this study, the ZnO quantum dots (QDs) water-based fluorescent anti-counterfeiting ink was prepared with the polyvinylpyrrolidone (PVP) content of 0.15–0.17 g/mL, the ZnO QDs concentration of 4% and water as the solvent, which has good fluorescence, printability and resistance. According to the halftone technology, fluorescence quenching of the ZnO QDs by acid, and acid resistance of the organic fluorescent ink, a high-quality anti-counterfeiting method of fluorescent discoloration was proposed. The QDs ink has broad application prospects in the field of anti-counterfeiting green packaging.

Sign in / Sign up

Export Citation Format

Share Document