Size dependence of the optical gap of “small” silicon quantum dots: Ab initio and empirical correlation schemes

2013 ◽  
Vol 112 ◽  
pp. 231-234 ◽  
Author(s):  
Shanawer Niaz ◽  
Emmanuel N. Koukaras ◽  
Nikolaos P. Katsougrakis ◽  
Theodoros G. Kourelis ◽  
Dimitrios K. Kougias ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Ab Initio ◽  
Size Dependence ◽  
Empirical Correlation ◽  
Silicon Quantum Dots ◽  
Optical Gap

High LevelAb InitioCalculations of the Optical Gap of Small Silicon Quantum Dots

2001 ◽  
Vol 87 (27) ◽  
Author(s):  
C. S. Garoufalis ◽  
Aristides D. Zdetsis ◽  
Stefan Grimme
Keyword(s):  
Quantum Dots ◽  
Silicon Quantum Dots ◽  
Optical Gap

Tailoring the optical gap of silicon quantum dots without changing their size

2014 ◽  
Vol 16 (36) ◽  
pp. 19275-19281 ◽  
Author(s):  
Huashan Li ◽  
Zhigang Wu ◽  
Tianlei Zhou ◽  
Alan Sellinger ◽  
Mark T. Lusk
Keyword(s):  
Quantum Dots ◽  
Silicon Quantum Dots ◽  
Optical Gap ◽  
Direct Generation

The optical gap of silicon quantum dots can be tailored, independent of their size, via direct generation of spatially separated excitons.

Communication: Photoinduced Carbon Dioxide Binding with Surface-Functionalized Silicon Quantum Dots

2018 ◽  
Author(s):  
Oscar A. Douglas-Gallardo ◽  
Cristián Gabriel Sánchez ◽  
Esteban Vöhringer-Martinez
Keyword(s):  
Carbon Dioxide ◽  
Quantum Dots ◽  
Atmospheric Carbon Dioxide ◽  
Density Functional ◽  
Tight Binding ◽  
Carbon Dioxide Concentration ◽  
Research Area ◽  
Silicon Quantum Dots ◽  
Dependent Model ◽  
Photoinduced Charge

<div> <div> <div> <p>Nowadays, the search of efficient methods able to reduce the high atmospheric carbon dioxide concentration has turned into a very dynamic research area. Several environmental problems have been closely associated with the high atmospheric level of this greenhouse gas. Here, a novel system based on the use of surface-functionalized silicon quantum dots (sf -SiQDs) is theoretically proposed as a versatile device to bind carbon dioxide. Within this approach, carbon dioxide trapping is modulated by a photoinduced charge redistribution between the capping molecule and the silicon quantum dots (SiQDs). Chemical and electronic properties of the proposed SiQDs have been studied with Density Functional Theory (DFT) and Density Functional Tight-Binding (DFTB) approach along with a Time-Dependent model based on the DFTB (TD-DFTB) framework. To the best of our knowledge, this is the first report that proposes and explores the potential application of a versatile and friendly device based on the use of sf -SiQDs for photochemically activated carbon dioxide fixation. </p> </div> </div> </div>

Size-Dependent Photothermal Performance of Silicon Quantum Dots

2021 ◽  
Vol 125 (6) ◽  
pp. 3421-3431
Author(s):  
İrem Nur Gamze Özbilgin ◽  
Batu Ghosh ◽  
Hiroyuki Yamada ◽  
Naoto Shirahata
Keyword(s):  
Quantum Dots ◽  
Silicon Quantum Dots ◽  
Size Dependent

scholarly journals Surface‐Anisotropic Janus Silicon Quantum Dots via Masking on 2D Silicon Nanosheets

2021 ◽  
pp. 2100288
Author(s):  
Marc Julian Kloberg ◽  
Haoyang Yu ◽  
Elisabeth Groß ◽  
Felix Eckmann ◽  
Tassilo M. F. Restle ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Silicon Quantum Dots
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