Quaternary Alloy Quantum Dots: Toward Low-Threshold Stimulated Emission and All-Solution-Processed Lasers in the Green Region

2015 ◽  
Vol 3 (5) ◽  
pp. 652-657 ◽  
Author(s):  
Yue Wang ◽  
Shancheng Yang ◽  
Heesun Yang ◽  
Handong Sun
Keyword(s):  
Quantum Dots ◽  
Quaternary Alloy ◽  
Stimulated Emission ◽  
Solution Processed ◽  
Low Threshold ◽  
Alloy Quantum Dots

scholarly journals Quaternary Alloy Quantum Dots as Fluorescence Probes for Total Acidity Detection of Paper-Based Relics

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1726
Author(s):  
Zhuorui Wang ◽  
Cong Cheng ◽  
Yongjuan Cheng ◽  
Lizhen Zheng ◽  
Daodao Hu
Keyword(s):  
Quantum Dots ◽  
Extraction Method ◽  
Quaternary Alloy ◽  
New Method ◽  
Fluorescence Probes ◽  
Total Acidity ◽  
Weak Acids ◽  
Paper Sample ◽  
Composition And Structure ◽  
Alloy Quantum Dots

Traditionally, the acidity of paper-based relics was determined by an extraction method and using a pH meter. This method could not obtain the total acidity of the paper-based relics because it only detected the concentration of free protons in the aqueous soaking solution. To overcome this defect, a new method for determining the total acidity of paper-based relics has been established by using quaternary alloy quantum dots. The quantum dots, CdZnSeS, modified by p-Aminothiophenol (pATP) were prepared, and their composition and structure were characterized. The fluorescence behavior of prepared quantum dots with acidity was investigated. The following results were obtained. The fluorescence of CdZnSeS-pATP quantum dots could decrease with increases in acidity because pATP dissociated from the surfaces of the quantum dots due to protons or undissociated weak acids. Based on this feature, a method for determining the acidity of paper-based relics was constructed, and this method was used to evaluate the acidity of actual paper-based relics. Obviously, for a given paper sample, since both free protons and bound protons can be determined by this method, the acidity measured by this method is more reasonable than that by pH meter.

Quaternary alloy quantum dots with widely tunable emission – a versatile system to fabricate dual-emission nanocomposites for bio-imaging

RSC Advances ◽  
2016 ◽  
Vol 6 (59) ◽  
pp. 53760-53767 ◽  
Author(s):  
Jie Wang ◽  
Tao Deng ◽  
Dawei Deng ◽  
Rong Zhang ◽  
Yueqing Gu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Imaging ◽  
Quaternary Alloy ◽  
Dual Emission ◽  
Biomedical Optical Imaging ◽  
Bio Imaging ◽  
Alloy Quantum Dots ◽  
Tunable Emission

Highly luminescent Zn-I-III-VI-based QDs with widely composition-tuned PL emissions have been synthesized for multiscale biomedical optical imaging.

Solution-processed upconversion photodetectors based on quantum dots

2020 ◽  
Vol 3 (5) ◽  
pp. 251-258 ◽  
Author(s):  
Wenjia Zhou ◽  
Yuequn Shang ◽  
F. Pelayo García de Arquer ◽  
Kaimin Xu ◽  
Ruili Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solution Processed

Solution-Processed White Light-Emitting Diode Utilizing Hybrid Polymer and Red–Green–Blue Quantum Dots

2012 ◽  
Vol 51 ◽  
pp. 09MH03
Author(s):  
Byoung Wook Kwon ◽  
Dong Ick Son ◽  
Dong-Hee Park ◽  
Heon-Jin Choi ◽  
Won-Kook Choi
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Light Emitting Diode ◽  
Hybrid Polymer ◽  
Solution Processed ◽  
Light Emitting

Ultrastable and Low-Threshold Random Lasing from Narrow-Bandwidth-Emission Triangular Carbon Quantum Dots

2018 ◽  
Vol 7 (2) ◽  
pp. 1801202 ◽  
Author(s):  
Fanglong Yuan ◽  
Zifan Xi ◽  
Xiaoyu Shi ◽  
Yunchao Li ◽  
Xiaohong Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Carbon Quantum Dots ◽  
Random Lasing ◽  
Narrow Bandwidth ◽  
Low Threshold

Facile Synthesis and Characterization of CdSe/ZnSe Core/Shell and ZnxCd1−xSe Alloy Quantum Dots via Non-organometallic Route

2018 ◽  
Vol 30 (1) ◽  
pp. 161-169 ◽  
Author(s):  
Oluwatobi Samuel Oluwafemi ◽  
Vuyelwa Ncapayi ◽  
Sundararajan Parani ◽  
Ncediwe Tsolekile
Keyword(s):  
Quantum Dots ◽  
Synthesis And Characterization ◽  
Core Shell ◽  
Facile Synthesis ◽  
Alloy Quantum Dots
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