Thin-Film Absorbers based on Gold Nanoparticles decorated Silicon Nanowires on thin Gold film

2012 ◽  
Author(s):  
Fugen Chen ◽  
Liu Yang ◽  
Sailing He
Keyword(s):  
Thin Film ◽  
Gold Nanoparticles ◽  
Silicon Nanowires ◽  
Gold Film ◽  
Thin Gold Film

scholarly journals Directed deposition of silicon nanowires using neopentasilane as precursor and gold as catalyst

2012 ◽  
Vol 3 ◽  
pp. 535-545 ◽  
Author(s):  
Britta Kämpken ◽  
Verena Wulf ◽  
Norbert Auner ◽  
Marcel Winhold ◽  
Michael Huth ◽  
...  
Keyword(s):  
Thin Film ◽  
Gold Nanoparticles ◽  
Uv Irradiation ◽  
Silicon Nanowires ◽  
Gold Films ◽  
Si Nanowires ◽  
Silicon Alloy ◽  
Liquid Gold ◽  
Different Sources

In this work the applicability of neopentasilane (Si(SiH3)4) as a precursor for the formation of silicon nanowires by using gold nanoparticles as a catalyst has been explored. The growth proceeds via the formation of liquid gold/silicon alloy droplets, which excrete the silicon nanowires upon continued decomposition of the precursor. This mechanism determines the diameter of the Si nanowires. Different sources for the gold nanoparticles have been tested: the spontaneous dewetting of gold films, thermally annealed gold films, deposition of preformed gold nanoparticles, and the use of “liquid bright gold”, a material historically used for the gilding of porcelain and glass. The latter does not only form gold nanoparticles when deposited as a thin film and thermally annealed, but can also be patterned by using UV irradiation, providing access to laterally structured layers of silicon nanowires.

Nano-Folded Gold Electrocatalysts Enhance the Selectivity of Carbon Dioxide Reduction

2019 ◽  
Author(s):  
Kam Sang Kwok ◽  
Yuxuan Wang ◽  
Michael Cao ◽  
Hao Shen ◽  
Weinan Xu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Mass Transport ◽  
Gold Film ◽  
X Ray Diffraction ◽  
Thin Gold Film ◽  
Faradaic Efficiency ◽  
X Ray ◽  
Transmission Electron ◽  
Carbon Monoxide Formation ◽  
Catalytic Interfaces

<p>The local structure and geometry of catalytic interfaces can influence the selectivity of chemical reactions. Here, using a pre-strained polymer, we uniaxially compress a thin gold film to form a nano-folded catalyst. We observe two kinds of folds and can tune the ratio of loose to tight folds by varying the extent of pre-strain in the polymer. We characterize the nano-folded catalysts using x-ray diffraction, scanning, and transmission electron microscopy. We observe grain reorientation and coarsening in the nano-folded gold catalysts. Electroreduction of carbon dioxide with these nano-folded catalysts reveals an enhancement of Faradaic efficiency for carbon monoxide formation by a factor of about four. This result suggests that electrolyte mass transport limitations and an increase of the local pH in the tight folds of the catalyst outweigh the effects of alterations in grain characteristics. Together, our studies demonstrate that nano-folded geometries can significantly alter grain characteristics, mass transport, and catalytic selectivity. </p>

Increased transmission of a thin gold film by adsorbed layers of dye molecules

2002 ◽  
Vol 80 (20) ◽  
pp. 3715-3717 ◽  
Author(s):  
Ulrich C. Fischer ◽  
Eugene Bortchagovsky ◽  
Jörg Heimel ◽  
René T. Hanke
Keyword(s):  
Gold Film ◽  
Dye Molecules ◽  
Thin Gold Film ◽  
Adsorbed Layers

Femtosecond pulsed laser ablation of thin gold film

2002 ◽  
Vol 34 (3) ◽  
pp. 199-202 ◽  
Author(s):  
K. Venkatakrishnan ◽  
B. Tan ◽  
B.K.A. Ngoi
Keyword(s):  
Laser Ablation ◽  
Gold Film ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Thin Gold Film ◽  
Femtosecond Pulsed Laser

Model of atomic hydrogen adsorption on thin gold film surface

Vacuum ◽  
1994 ◽  
Vol 45 (2-3) ◽  
pp. 299-301 ◽  
Author(s):  
L. Stobiński ◽  
R. Duś
Keyword(s):  
Atomic Hydrogen ◽  
Hydrogen Adsorption ◽  
Gold Film ◽  
Film Surface ◽  
Thin Gold Film
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