Evolution of nanostructured single-phase CoSb3 thin films by low-energy ion beam induced mixing and their thermoelectric performance

2017 ◽  
Vol 19 (36) ◽  
pp. 24886-24895 ◽  
Author(s):  
Manju Bala ◽  
Srashti Gupta ◽  
Sanjeev K. Srivastava ◽  
Sankarakumar Amrithapandian ◽  
Tripurari S. Tripathi ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Thermoelectric Properties ◽  
Single Phase ◽  
Ion Beam ◽  
Low Energy ◽  
Thermoelectric Performance

We report that a nanostructured CoSb3 thin film in a single phase can be synthesized by ion beam processing of Co/Sb bilayer thin films with better thermoelectric properties.

Pulsed Proton Beam Annealing of Co-Si Thin Film Systems

1982 ◽  
Vol 13 ◽  
Author(s):  
L. J. Chen ◽  
L. S. Hung ◽  
J. W. Mayer ◽  
J. E. E. Baglin
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Proton Beam ◽  
Beam Energy ◽  
Ion Beam ◽  
Low Energy ◽  
Eutectic Melting ◽  
Proton Beams ◽  
Annealing Effects ◽  
Si Thin Film

ABSTRACTCobalt (∼300Å) and CoSi2 (∼1000Å) thin films on Si have been annealed by intense proton beams. RBS and TEM were performed to study ion beam annealing effects.For ion beam energy densities above about 1 J/cm2, epitaxial CoSi2 layers were formed for both Co and polycrystalline CoSi2 on Si. At low energy densities, Co2Si was found to coexist with Co. The results are discussed in terms of eutectic melting processes.

scholarly journals Thermoelectric Properties of Cu2Se Nano-Thin Film by Magnetron Sputtering

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2075
Author(s):  
Liangliang Yang ◽  
Jiangtao Wei ◽  
Yuanhao Qin ◽  
Lei Wei ◽  
Peishuai Song ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Magnetron Sputtering ◽  
Seebeck Coefficient ◽  
Thermoelectric Properties ◽  
Large Scale ◽  
Absolute Temperature ◽  
Thermoelectric Performance ◽  
Tem Analysis ◽  
Performance Factor

Thermoelectric technology can achieve mutual conversion between thermoelectricity and has the unique advantages of quiet operation, zero emissions and long life, all of which can help overcome the energy crisis. However, the large-scale application of thermoelectric technology is limited by its lower thermoelectric performance factor (ZT). The thermoelectric performance factor is a function of the Seebeck coefficient, electrical conductivity, thermal conductivity and absolute temperature. Since these parameters are interdependent, increasing the ZT value has always been a challenge. Here, we report the growth of Cu2Se thin films with a thickness of around 100 nm by magnetron sputtering. XRD and TEM analysis shows that the film is low-temperature α-Cu2Se, XPS analysis shows that about 10% of the film’s surface is oxidized, and the ratio of copper to selenium is 2.26:1. In the range of 300–400 K, the maximum conductivity of the film is 4.55 × 105 S m−1, which is the maximum value reached by the current Cu2Se film. The corresponding Seebeck coefficient is between 15 and 30 µV K−1, and the maximum ZT value is 0.073. This work systematically studies the characterization of thin films and the measurement of thermoelectric properties and lays the foundation for further research on nano-thin-film thermoelectrics.

Enhanced thermoelectric properties of SnSe thin films grown by single-target magnetron sputtering

2019 ◽  
Vol 7 (30) ◽  
pp. 17981-17986 ◽  
Author(s):  
Lirong Song ◽  
Jiawei Zhang ◽  
Bo Brummerstedt Iversen
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Magnetron Sputtering ◽  
Thermoelectric Properties ◽  
Bulk Material ◽  
Thermoelectric Performance ◽  
Single Target ◽  
Snse Thin Film

SnSe thin films were successfully grown using single-target magnetron sputtering. The SnSe thin film annealed at 700 K exhibits superior thermoelectric performance compared with previously reported SnSe films and polycrystalline SnSe bulk material.

Epitaxy and Chemical Reactions During Thin Film Formation from Low Energy Ions New Kinetic Pathways, New Phases and New Properties

1991 ◽  
Vol 236 ◽  
Author(s):  
Nicole Herbots ◽  
O.C. Hellman ◽  
O. Vancauwenberghe
Keyword(s):  
Thin Film ◽  
Chemical Reactions ◽  
Degrees Of Freedom ◽  
Film Growth ◽  
Film Formation ◽  
Chemical Reactivity ◽  
Ion Beam ◽  
Low Energy ◽  
Low Energy Ions ◽  
Beam Deposition

AbstractThree important effects of low energy direct Ion Beam Deposition (IBD) are the athermal incorporation of material into a substrate, the enhancement of atomic mobility in the subsurface, and the modification of growth kinetics it creates. All lead to a significant lowering of the temperature necessary to induce epitaxial growth and chemical reactions. The fundamental understanding and new applications of low temperature kinetics induced by low energy ions in thin film growth and surface processing of semiconductors are reviewed. It is shown that the mechanism of IBD growth can be understood and computed quantitatively using a simple model including ion induced defect generation and sputtering, elastic recombination, thermal diffusion, chemical reactivity, and desorption The energy, temperature and dose dependence of growth rate, epitaxy, and chemical reaction during IBD is found to be controlled by the net recombination rate of interstitials at the surface in the case of epitaxy and unreacted films, and by the balance between ion beam decomposition and phase formation induced by ion beam generated defects in the case of compound thin films. Recent systematic experiments on the formation of oxides and nitrides on Si, Ge/Si(100), heteroepitaxial SixGe1−x/Si(100) and GaAs(100) illustrate applications of this mechanism using IBD in the form of Ion Beam Nitridation (IBN), Ion Beam Oxidation (IBO) and Combined Ion and Molecular beam Deposition (CIMD). It is shown that these techniques enable (1) the formation of conventional phases in conditions never used before, (2) the control and creation of properties via new degrees of freedom such as ion energy and lowered substrate temperatures, and (3) the formation of new metastable heterostructures that cannot be grown by pure thermal means.

Effects of the low energy-ion beam assistance in the properties of TiCxNy thin films

2002 ◽  
Vol 151-152 ◽  
pp. 189-193 ◽  
Author(s):  
G.G. Fuentes ◽  
D. Cáceres ◽  
I. Vergara ◽  
E. Elizalde ◽  
J.M. Sanz
Keyword(s):  
Thin Films ◽  
Ion Beam ◽  
Low Energy

Low-energy Ar+-ion beam induced endotaxial plasmonic Ag nanoparticles in PEDOT:PSS thin-films

2021 ◽  
pp. 130984
Author(s):  
Amardeep Bharti ◽  
Richa Bhardwaj ◽  
Kanika Upadhyay ◽  
Harkawal Singh ◽  
Asokan Kandasami ◽  
...  
Keyword(s):  
Thin Films ◽  
Ag Nanoparticles ◽  
Ion Beam ◽  
Low Energy

Dynamics of Microstructure in the Early Stages of Ion Beam Assisted Film Growth

1991 ◽  
Vol 237 ◽  
Author(s):  
Harry A. Atwater ◽  
C. J. Tsai ◽  
S. Nikzad ◽  
M.V.R. Murty
Keyword(s):  
Thin Films ◽  
Epitaxial Growth ◽  
Recent Progress ◽  
Film Growth ◽  
Ion Beam ◽  
Surface Interactions ◽  
Low Energy ◽  
Early Stages ◽  
Semiconductor Thin Films ◽  
Nucleation Mechanisms

ABSTRACTRecent progress in low energy ion-surface interactions, and the early stages of ion-assisted epitaxy of semiconductor thin films is described. Advances in three areas are discussed: dynamics of displacements and defect incorporation, nucleation mechanisms, and the use of ion bombardment to modify epitaxial growth kinetics in atrulysurface-selective manner.

Ferroelectric Property of Ion Beam Enhanced Deposited Lithium Tantalate Thin Film

2011 ◽  
Vol 335-336 ◽  
pp. 1418-1423
Author(s):  
De Yin Zhang ◽  
Wei Qian ◽  
Kun Li ◽  
Jian Sheng Xie
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Surface Morphology ◽  
Hysteresis Loop ◽  
Ferroelectric Property ◽  
Ion Beam ◽  
Ferroelectric Properties ◽  
Fatigue Property ◽  
Lithium Tantalate ◽  
Electric Filed

The Ion Beam Enhanced Deposited (IBED) lithium tantalate (LiTaO3) thin film samples with Al/LiTaO3/Pt electrode structure were prepared on the Pt/Ti/SiO2/Si(100) and SiO2/Si(100) substrate respectively. The crystallization, surface morphology, ferroelectric property, and fatigue property of the prepared samples with the different annealed processes were investigated. The XRD measured results show that the prepared samples have the polycrystal structure of LiTaO3 with the preferred orientation of <012> and <104> located at the 2θ of 23.60 and 32.70 respectively. The SEM morphology analysis reveals the prepared film annealed at 550°C is uniform, smooth and crack-free on the surface and cross section. The ferroelectric property measured results show that the remanent polarization Pr of the samples annealed at different temperature almost increase with the electric field intensity stronger. The leakage current makes the hysteresis loop of the samples subjected to a strong measured electric filed difficult to appear the same saturation hysteresis loop as the single-crystal LiTaO3. The prepared samples annealed at 550°C have a Pr value of 11.5μC/cm2 when subjected to the electrical field of 400kV/cm. The breakdown voltage of the 587nm thick thin film sample is high as to 680 kV/cm. The fatigue property measured results show only 15.17% Pr drop of the prepared films annealed at 550°C appear after 5×1010 cycles polarized by the 10MHz sinusoidal signal with the peak-to-peak amplitude of 10 Volt. The ferroelectric properties of the prepared films meet the practical application requirements of charge response measurement of the LiTaO3 infrared detector owe to the Pr of the prepared films annealed at different temperature large beyond 10μC/cm2 when the prepared films subjected to a strong electric filed larger than 400 kV/cm. The experimental results also show that the surface morphology, the ferroelectric and fatigue properties of the IBED LiTaO3 thin films are significant better than those of the Sol-Gel derived LiTaO3 thin films.

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