Optimization of microwave-assisted synthesis of high-quality ZnSe/ZnS core/shell quantum dots using response surface methodology

2013 ◽  
Vol 291 ◽  
pp. 476-481 ◽  
Author(s):  
Rong Ma ◽  
Pei-Jiang Zhou ◽  
Hong-Ju Zhan ◽  
Chi Chen ◽  
Yu-Ning He
Keyword(s):  
Quantum Dots ◽  
Response Surface Methodology ◽  
Response Surface ◽  
Microwave Assisted Synthesis ◽  
Core Shell ◽  
High Quality ◽  
Microwave Assisted

scholarly journals Response surface methodology applied to the study of the microwave-assisted synthesis of quaternized chitosan

2016 ◽  
Vol 138 ◽  
pp. 317-326 ◽  
Author(s):  
Danilo Martins dos Santos ◽  
Andrea de Lacerda Bukzem ◽  
Sérgio Paulo Campana-Filho
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Microwave Assisted Synthesis ◽  
Quaternized Chitosan ◽  
Microwave Assisted

Microwave‐assisted Synthesis of CuCl‐MIL‐47 and Application to Adsorptive Denitrogenation of Model Fuel: Response Surface Methodology

2020 ◽  
Vol 5 (46) ◽  
pp. 14583-14591
Author(s):  
Mohammad Bereyhi ◽  
Rouholah Zare‐Dorabei ◽  
Seyed Hossein Mosavi
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted ◽  
Model Fuel

High-Temperature Synthesis of CdSe-Based Core/Shell, Core/Shell/Shell, and Core/Graded-Shell Nanoplatelets for Stable and Efficient Narrowband Emitters

2019 ◽  
Author(s):  
Aurelio A. Rossinelli ◽  
Henar Rojo ◽  
Aniket S. Mule ◽  
Marianne Aellen ◽  
Ario Cocina ◽  
...  
Keyword(s):  
Quantum Dots ◽  
High Temperature ◽  
Equilibrium Shape ◽  
Size Variation ◽  
Crystal Defects ◽  
Atomic Scale ◽  
Quantum Yields ◽  
Core Shell ◽  
Compositional Gradient ◽  
High Quality

<div>Colloidal semiconductor nanoplatelets exhibit exceptionally narrow photoluminescence spectra. This occurs because samples can be synthesized in which all nanoplatelets share the same atomic-scale thickness. As this dimension sets the emission wavelength, inhomogeneous linewidth broadening due to size variation, which is always present in samples of quasi-spherical nanocrystals (quantum dots), is essentially eliminated. Nanoplatelets thus offer improved, spectrally pure emitters for various applications. Unfortunately, due to their non-equilibrium shape, nanoplatelets also suffer from low photo-, chemical, and thermal stability, which limits their use. Moreover, their poor stability hampers the development of efficient synthesis protocols for adding high-quality protective inorganic shells, which are well known to improve the performance of quantum dots. <br></div><div>Herein, we report a general synthesis approach to highly emissive and stable core/shell nanoplatelets with various shell compositions, including CdSe/ZnS, CdSe/CdS/ZnS, CdSe/Cd<sub>x</sub>Zn<sub>1–x</sub>S, and CdSe/ZnSe. Motivated by previous work on quantum dots, we find that slow, high-temperature growth of shells containing a compositional gradient reduces strain-induced crystal defects and minimizes the emission linewidth while maintaining good surface passivation and nanocrystal uniformity. Indeed, our best core/shell nanoplatelets (CdSe/Cd<sub>x</sub>Zn<sub>1–x</sub>S) show photoluminescence quantum yields of 90% with linewidths as low as 56 meV (19.5 nm at 655 nm). To confirm the high quality of our different core/shell nanoplatelets for a specific application, we demonstrate their use as gain media in low-threshold ring lasers. More generally, the ability of our synthesis protocol to engineer high-quality shells can help further improve nanoplatelets for optoelectronic devices.</div>

Rapid Microwave-Assisted Synthesis of SnO2 Quantum Dots for Efficient Planar Perovskite Solar Cells

2021 ◽  
Vol 4 (2) ◽  
pp. 1887-1893
Author(s):  
Zhengjie Xu ◽  
Yue Jiang ◽  
Zhuoxi Li ◽  
Cong Chen ◽  
Xiangyu Kong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted

Response surface methodology for microwave-assisted extraction of pectin from cocoa pod husk (Theobroma cacao) mediated by oxalic acid

2020 ◽  
Vol 14 (4) ◽  
pp. 2126-2133 ◽  
Author(s):  
Radityo Pangestu ◽  
Siti Amanah ◽  
Ario Betha Juanssilfero ◽  
Yopi ◽  
Urip Perwitasari
Keyword(s):  
Response Surface Methodology ◽  
Oxalic Acid ◽  
Response Surface ◽  
Theobroma Cacao ◽  
Microwave Assisted Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Cocoa Pod Husk
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