scholarly journals Impurity diffusion in magic-size icosahedral clusters

2021 ◽  
Author(s):  
Diana Nelli ◽  
Fabio Pietrucci ◽  
Riccardo Ferrando
Keyword(s):  
Impurity Diffusion ◽  
Icosahedral Clusters

scholarly journals Boron-Decorated Pillared Graphene as the Basic Element for Supercapacitors: An Ab Initio Study

2021 ◽  
Vol 11 (8) ◽  
pp. 3496
Author(s):  
Dmitry A. Kolosov ◽  
Olga E. Glukhova
Keyword(s):  
Density Functional ◽  
Dft Method ◽  
Heat Of Formation ◽  
Basic Element ◽  
Supercapacitor Electrode ◽  
Functional Theory ◽  
Icosahedral Clusters ◽  
New Material ◽  
Principle Density Functional Theory ◽  
Specific Quantum

In this work, using the first-principle density functional theory (DFT) method, we study the properties of a new material based on pillared graphene and the icosahedral clusters of boron B12 as a supercapacitor electrode material. The new composite material demonstrates a high specific quantum capacitance, specific charge density, and a negative value of heat of formation, which indicates its efficiency. It is shown that the density of electronic states increases during the addition of clusters, which predictably leads to an increase in the electrode conductivity. We predict that the use of a composite based on pillared graphene and boron will increase the efficiency of existing supercapacitors.

The mechanism of impurity diffusion in silicon

1972 ◽  
Vol 26 (6) ◽  
pp. 1301-1306 ◽  
Author(s):  
P. S. Dobson
Keyword(s):  
Impurity Diffusion

Effect of Impurity Diffusion on the Characteristics of Avalanche Photodiode

1980 ◽  
Vol 19 (4) ◽  
pp. 687-691 ◽  
Author(s):  
Yoshifumi Takanashi ◽  
Yoshiji Horikoshi
Keyword(s):  
Avalanche Photodiode ◽  
Impurity Diffusion

scholarly journals Impurity Diffusion in Lithium

1970 ◽  
Vol 25 (10) ◽  
pp. 1477-1483 ◽  
Author(s):  
Aadu Ott
Keyword(s):  
Thin Film ◽  
Impurity Atom ◽  
Thin Film Deposition ◽  
Film Deposition ◽  
Impurity Diffusion ◽  
Experimental Results ◽  
Vacancy Mechanism ◽  
Lithium Metal ◽  
Qualitative Explanation ◽  
Sectioning Method

Abstract The diffusion of 115mCd, 203Hg and 72Ga tracers in lithium metal has been studied, using a thin film deposition and sectioning method.The experimental results can be expressed by the following Arrhenius relations:These results, which do not agree with any established theory of impurity diffusion in a metallic lattice, are discussed together with data from previous experiments in terms of the systematics of the dependence of the diffusivity on the "ionizability" of an impurity atom in Li, and on the size of the impurity. In this way a qualitative explanation of the different diffusions rates can be obtained. The relatively large and electropositive impurities appear to diffuse mainly via a vacancy mechanism and the small and electronegative ones mainly as interstitials. The distinction substitutional-interstitial is less pronounced for very large impurities, which may also exhibit tendencies to be trapped at lattice defects.

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