Assembling silicon quantum dots into wires, networks and rods via metal ion bridges

Nanoscale ◽  
2018 ◽  
Vol 10 (16) ◽  
pp. 7597-7604 ◽  
Author(s):  
Yuki Ohata ◽  
Hiroshi Sugimoto ◽  
Minoru Fujii
Keyword(s):  
Quantum Dots ◽  
Electrical Properties ◽  
Metal Ions ◽  
Metal Ion ◽  
Silicon Quantum Dots ◽  
Si Quantum Dots

Wires, networks and rods of Si quantum dots (QDs) are produced by bridging Si QDs with metal ions and the electrical properties are studied.

Precise size separation of water-soluble red-to-near-infrared-luminescent silicon quantum dots by gel electrophoresis

Nanoscale ◽  
2020 ◽  
Vol 12 (16) ◽  
pp. 9266-9271
Author(s):  
Minoru Fujii ◽  
Akiko Minami ◽  
Hiroshi Sugimoto
Keyword(s):  
Quantum Dots ◽  
Standard Method ◽  
Gel Electrophoresis ◽  
Near Infrared ◽  
Water Soluble ◽  
Silicon Quantum Dots ◽  
Size Separation ◽  
First Time ◽  
Si Quantum Dots

Gel electrophoresis, which is a standard method for separation and analysis of macromolecules such as DNA, RNA and proteins, is applied for the first time to silicon (Si) quantum dots (QDs) for size separation.

Photoluminescence of pure silicon quantum dots embedded in an amorphous silica wire array

2017 ◽  
Vol 5 (27) ◽  
pp. 6713-6717 ◽  
Author(s):  
Shunkai Lu ◽  
Bin Wu ◽  
Yuyang Sun ◽  
Yafei Cheng ◽  
Fan Liao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Amorphous Silica ◽  
Thermal Evaporation ◽  
Wire Array ◽  
Silicon Quantum Dots ◽  
Pure Silicon ◽  
Si Quantum Dots

Si quantum dots embedded in an amorphous silica wire array were first synthesized using thermal evaporation.

Creation of Si quantum dots in a silica matrix due to conversion of radiation defects under pulsed ion-beam exposure

2019 ◽  
Vol 21 (45) ◽  
pp. 25467-25473 ◽  
Author(s):  
A. F. Zatsepin ◽  
Yu. A. Kuznetsova ◽  
C. H. Wong
Keyword(s):  
Quantum Dots ◽  
Ion Implantation ◽  
Amorphous Silica ◽  
Ion Beam ◽  
Silica Matrix ◽  
Radiation Defects ◽  
Silicon Quantum Dots ◽  
Si Quantum Dots

In this work, we report the mechanism of defects formation and discuss how the pulsed ion implantation actuates the process of silicon-quantum-dots formation in amorphous silica.

Effects of oxygen addition on electrical properties of silicon quantum dots/amorphous silicon carbide superlattice

2010 ◽  
Vol 10 (3) ◽  
pp. S435-S438 ◽  
Author(s):  
Yasuyoshi Kurokawa ◽  
Shigeru Yamada ◽  
Shinsuke Miyajima ◽  
Akira Yamada ◽  
Makoto Konagai
Keyword(s):  
Quantum Dots ◽  
Silicon Carbide ◽  
Electrical Properties ◽  
Amorphous Silicon ◽  
Silicon Quantum Dots ◽  
Amorphous Silicon Carbide ◽  
Oxygen Addition

Insight into the effects of surface oxidation and carbonization on the electronic properties of silicon quantum dots and silicon slabs: a density functional study

RSC Advances ◽  
2014 ◽  
Vol 4 (105) ◽  
pp. 60948-60952 ◽  
Author(s):  
Yuheng Zeng ◽  
Liang Chen ◽  
Guoqiang Liu ◽  
Hua Xu ◽  
Weijie Song
Keyword(s):  
Quantum Dots ◽  
Electronic Properties ◽  
Density Functional ◽  
Surface Oxidation ◽  
Functional Study ◽  
Silicon Quantum Dots ◽  
Carrier Recombination ◽  
Oxygen Oxidation ◽  
Si Quantum Dots ◽  
Insight Into

In this work, we investigated the effects of surface backbond-oxygen oxidation and surface substitute-carbon carbonization on carrier recombination and transportation of 10-, 12- and 14 Å Si quantum dots (QDs).

Photoluminescence from Silicon Quantum Dots in Si Quantum Dots/Amorphous SiC Superlattice

2007 ◽  
Vol 46 (No. 35) ◽  
pp. L833-L835 ◽  
Author(s):  
Yasuyoshi Kurokawa ◽  
Shigeki Tomita ◽  
Shinsuke Miyajima ◽  
Akira Yamada ◽  
Makoto Konagai
Keyword(s):  
Quantum Dots ◽  
Silicon Quantum Dots ◽  
Amorphous Sic ◽  
Si Quantum Dots

Green and One-Pot Synthesis of Mint Derived Carbon Quantum Dots for Metal Ion Sensing

2021 ◽  
pp. 81-94
Keyword(s):  
Quantum Dots ◽  
Ascorbic Acid ◽  
Metal Ions ◽  
Crystalline Structure ◽  
Metal Ion ◽  
Fluorescence Emission ◽  
Carbon Quantum Dots ◽  
Morphological Properties ◽  
Quenching Effect ◽  
Ion Sensing

A green and simple synthesis of carbon quantum dots (CQDs) was derived from dried mint leaves by hydrothermal method. Crystalline structure of the synthesized CQDs was characterized with X-ray diffraction (XRD) method. The morphological properties of the CQDs were investigated with transmission electron microscopy (TEM). The optical behaviors of the CQDs were examined with fourier transfom infrared spectrophotometer (FT-IR), ultraviolet visible (UV-Vis) and photoluminescence spectrophotometer techniques. Crystalline structure of the CQDs was found as amorphous in nature and the average diameter of the CDs was calculated as 8.13 nm from TEM study. According to the fluorescence emission spectra of the samples, synthesized CQDs was sensitive to mainly Ag(I), Cr(III) and Fe(III) ions. Especially, Ag(I) was the most sensible compared to other metal ions. Quenching effect of the CQDs was also evaluated by using ascorbic acid to metal ions added CQDs samples. Ascorbic acid showed the quenching effect for all the metal ion added samples except Sn(II) ion.

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