scholarly journals Sputtering rate of lead, tin and germanium tellurides with low energy argon ions

2021 ◽  
Vol 11 (1) ◽  
pp. 36-41
Author(s):  
Dmytro Zayachuk ◽  
◽  
Vasyl Slynko ◽  
Attila Csík ◽  
◽  
...  
Keyword(s):  
Binding Energy ◽  
Surface Density ◽  
Atomic Weight ◽  
Low Energy ◽  
Relative Area ◽  
Surface Binding ◽  
Crystal Matrix ◽  
Surface Binding Energy ◽  
Metal Atoms ◽  
Argon Ions

Sputtering of PbTe, SnTe, and GeTe crystal samples by low-energy Ar+ ions are investigated, and the sputtering rate vsp of the studied compounds, as well as its dependence on both the composition of crystal matrix and the sputtering energy are determined. It is found that under the same conditions the sputtering rate in the sequence of GeTe-SnTe-PbTe telluride compounds increases when their average atomic weight increases. This phenomenon is explained by changes in the surface binding energy of metal atoms in lead, tin and germanium tellurides. It is shown that for all compounds the sputtering rate also increases with the increase in the sputtering energy. In the energy range from 160 to 550 eV,this increase is almost linear. The coefficients of change in the sputtering rate with energy dvsp/dE are calculated. The surface density of Ar+ ion-induced structures and the relative area of the sputtered surface covered by these structures are determined for the natural lateral surfaces of a PbTe crystal grown from melt by the Bridgman method as a function of sputtering energy. It is shown that both studied parameters decrease exponentially with increasing the sputtering energy.

scholarly journals Enhancement of Electrocatalytic Oxygen Evolution by Chiral Molecular Functionalization of Hybrid 2D Electrodes

2021 ◽  
Author(s):  
Yunchang Liang ◽  
Karla Banjac ◽  
Kévin Martin ◽  
Nicolas Zigon ◽  
Seunghwa Lee ◽  
...  
Keyword(s):  
Binding Energy ◽  
Oxygen Evolution ◽  
State Of The Art ◽  
Chiral Molecules ◽  
Surface Binding ◽  
Surface Binding Energy ◽  
Energy Conversion And Storage ◽  
Polarization Mechanism ◽  
And Storage ◽  
Unconventional Methods

A sustainable future requires highly efficient energy conversion and storage processes, where electrocatalysis plays a crucial role. The activity of an electrocatalyst is governed by the binding energy towards the reaction intermediates, while the scaling relationships prevent the improvement of a catalytic system over its volcano-plot limits. To overcome these limitations, unconventional methods that are not fully determined by the surface binding energy can be helpful. Here, we use organic chiral molecules, i.e., hetero-helicenes, to boost the oxygen evolution reaction (OER) by ca. 131.5 % (at the potential of 1.65 V vs. RHE) at state-of-the-art 2D catalysts via a spin-polarization mechanism. Our results show that chiral molecule-functionalization is able to increase the OER activity of catalysts beyond the volcano limits. A guideline for optimizing the catalytic activity via chiral molecular functionalization of hybrid 2D electrodes is given.

Enhanced surface binding energy regulates uniform potassium deposition for stable potassium metal anodes

2020 ◽  
Vol 8 (11) ◽  
pp. 5671-5678 ◽  
Author(s):  
Xinxin Zhao ◽  
Fengjiao Chen ◽  
Junqing Liu ◽  
Mingren Cheng ◽  
Hai Su ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Binding Energy ◽  
Surface Binding ◽  
Surface Binding Energy ◽  
Enhanced Surface ◽  
Coated Carbon ◽  
Potassium Deposition ◽  
Metal Anodes

A SnO2-coated carbon fiber mat is fabricated and used to guide uniform K nucleation/deposition for dendrite free K metal anodes.

scholarly journals Enhancement of Electrocatalytic Oxygen Evolution by Chiral Molecular Functionalization of Hybrid 2D Electrodes

2021 ◽  
Author(s):  
Yunchang Liang ◽  
Karla Banjac ◽  
Kévin Martin ◽  
Nicolas Zigon ◽  
Seunghwa Lee ◽  
...  
Keyword(s):  
Binding Energy ◽  
Oxygen Evolution ◽  
State Of The Art ◽  
Chiral Molecules ◽  
Surface Binding ◽  
Surface Binding Energy ◽  
Energy Conversion And Storage ◽  
Polarization Mechanism ◽  
And Storage ◽  
Unconventional Methods

Abstract A sustainable future requires highly efficient energy conversion and storage processes, where electrocatalysis plays a crucial role. The activity of an electrocatalyst is governed by the binding energy towards the reaction intermediates, while the scaling relationships prevent the improvement of a catalytic system over its volcano-plot limits. To overcome these limitations, unconventional methods that are not fully determined by the surface binding energy can be helpful. Here, we use organic chiral molecules, i.e., hetero-helicenes, to boost the oxygen evolution reaction (OER) by ca. 131.5% (at the potential of 1.65 V vs. RHE) at state-of-the-art 2D catalysts via a spin-polarization mechanism. Our results show that chiral molecule-functionalization is able to increase the OER activity of catalysts beyond the volcano limits. A guideline for optimizing the catalytic activity via chiral molecular functionalization of hybrid 2D electrodes is given.

scholarly journals Analytical Form of Sputtering in Relation to Surface Binding Energy for Different Types of Perovskites

2019 ◽  
Vol 1299 ◽  
pp. 012022 ◽  
Author(s):  
Akinwumi Akinpelu ◽  
Oluwole E. Oyewande ◽  
Adaeze ◽  
Arijaje T. Emuobor ◽  
C Olawole ◽  
...  
Keyword(s):  
Binding Energy ◽  
Analytical Form ◽  
Surface Binding ◽  
Surface Binding Energy ◽  
Different Types

Simulating Solar-Wind-Ion Sputtering of Sodium from Mercury’s Surface: The Importance of the Surface Binding Energy 

2021 ◽  
Author(s):  
Liam Morrissey ◽  
Orenthal Tucker ◽  
Rosemary Killen ◽  
Dennis Herschback ◽  
Daniel W. Savin
Keyword(s):  
Solar Wind ◽  
Binding Energy ◽  
Ion Sputtering ◽  
Surface Binding ◽  
Surface Binding Energy

Surface binding energy shifts, mixed valence and localization of 4f electrons: Ce vs. Sm (invited)

1981 ◽  
Vol 52 (3) ◽  
pp. 2123-2128 ◽  
Author(s):  
W. Gudat ◽  
M. Campagna ◽  
R. Rosei ◽  
J. H. Weaver ◽  
W. Eberhardt ◽  
...  
Keyword(s):  
Binding Energy ◽  
Mixed Valence ◽  
Surface Binding ◽  
Surface Binding Energy
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