Quantum theory of the effect of grain boundaries on the electrical conductivity of thin films and wires

2015 ◽  
Vol 470-471 ◽  
pp. 39-49 ◽  
Author(s):  
Luis Moraga ◽  
Ricardo Henriquez ◽  
Basilio Solis
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Quantum Theory ◽  
Grain Boundaries ◽  
Conductivity Of Thin Films

scholarly journals The electrical conductivity of thin films of mercury

1939 ◽  
Vol 172 (951) ◽  
pp. 530-539 ◽  
Keyword(s):  
Thin Films ◽  
Heat Treatment ◽  
Electrical Conductivity ◽  
Alkali Metals ◽  
High Vacuum ◽  
Experimental Measurements ◽  
Preliminary Note ◽  
Extended Study ◽  
Temperature Coefficients ◽  
Conductivity Of Thin Films

In the present paper an account is given of experimental measurements on the electrical conductivity of thin films of mercury prepared by evaporative deposition in a high vacuum according to the technique described in previous papers (Lovell 1936; Appleyard and Lovell 1937). In a brief preliminary note (Appleyard 1937) we have pointed out that the results for mercury are very different from those for the alkali metals, and that in particular a considerable thickness of mercury must be deposited on the pyrex surface before conductivity begins. We have since confirmed and extended these observations, obtained accurate absolute values for the thickness of the films, investigated their stability, and made an extended study of their temperature coefficients after heat treatment. A comparison with the results of previous workers is given later.

Synthesis and Electrical Conductivity of N-(3-(Trifluoromethyl)Benzylidine)Thiosemicarbazide towards Dyes Sensitized Solar Cell

2018 ◽  
Vol 382 ◽  
pp. 364-368
Author(s):  
Uwaisulqarni M. Osman ◽  
Azieda Syafika N. Farizal ◽  
Nurhayati Ishak ◽  
Mohd Hasmizam Razali ◽  
M.I.N. Isa
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Light Intensity ◽  
Indium Tin Oxide ◽  
Spectroscopic Technique ◽  
Ito Glass ◽  
Maximum Conductivity ◽  
Ft Ir ◽  
Uv Visible ◽  
Conductivity Of Thin Films

Organic compound containing thiosemicarbazide moiety has been successfully synthesized. The new synthesized dyes, N-(3-(Trifluoromethylbenzaldehyde)benzylidine thiosemi- carbazide (3-TFT) was characterized by spectroscopic technique namely, CHNS elemental analysis, Fourier Transform Infra-Red analysis (FT-IR), UV-Visible analysis (UV-Vis),1H and13C Nuclear Magnetic Resonance (NMR). The thin films of this dye have been prepared using a spin coating technique and deposited on indium tin oxide (ITO) glass substrate. The main highlight was an electrical conductivity of thin films which was measured using four point probing system in a range of light intensity, 25 Wm-2until 200Wm-2. The potential electrical conductivity of 3-TFT dye was found gradually increased until reached the maximum conductivity values of 0.1489 Scm-1at light intensity of 100 Wm-2in the most diluted concentration at 1x10-5M.

Electron tunneling through grain boundaries in transparent conductive oxides and implications for electrical conductivity: the case of ZnO:Al thin films

2018 ◽  
Vol 5 (4) ◽  
pp. 715-726 ◽  
Author(s):  
Viet Huong Nguyen ◽  
Ulrich Gottlieb ◽  
Anthony Valla ◽  
Delfina Muñoz ◽  
Daniel Bellet ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Grain Boundaries ◽  
Electron Tunneling ◽  
Transparent Conductive Oxides ◽  
New Model ◽  
Polycrystalline Semiconductors

A new model is presented to describe charge scattering at grain boundaries in degenerately doped polycrystalline semiconductors such as transparent conductive oxides.

Changes in the electrical conductivity of glass, quartz, Au, C, and MoS2 films under influence of continuous proton injection

2021 ◽  
Vol 10 ◽  
pp. 37-46
Author(s):  
G. S. Burkhanov ◽  
◽  
S. A. Lachenkov ◽  
M. A. Kononov ◽  
A. U. Bashlakov ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Ion Beam ◽  
Test Sample ◽  
Ion Source ◽  
Gold Target ◽  
Glass Substrates ◽  
Wide Range ◽  
Continuous Stream ◽  
Conductivity Of Thin Films

Changes in the electrical conductivity of a wide range of materials with different crystal-chemical types and electrophysical properties (quartz, glass, molybdenum disulfide, graphite, gold) under continuous proton injection are studied. Film samples of layered MoS2 and graphite compounds were obtained on rough surfaces of glass or quartz by mechanical rubbing of powder. Gold films are formed on glass substrates by magnetron sputtering of a gold target. To create a continuous stream of protons injected into the test sample, a stationary ion source with a cold cathode and a magnetic field forming an ion beam of relatively low intensity was used. The current in the ion beam is up to 1.2 mA, the pressure of hydrogen in the chamber is ~10 – 2 Pa, the energy of hydrogen ions is from 1 to 4 keV. The experimental results indicate that under conditions of continuous proton injection, the electrical conductivity of thin films with a layered structure (MoS2 and graphite) increases sharply (by 4 – 5 orders of magnitude). This effect increases when the temperature decreases from ~ 293 to ~ 77 K, as well as when the number of charges supplied to the sample increases. In the case of continuous injection of protons into massive dielectrics (glass, quartz) and thin films of gold, no noticeable change in electrical conductivity was detected.

Thermoelectric properties of PbTe thin films prepared by gas evaporation method

1999 ◽  
Vol 14 (1) ◽  
pp. 209-212 ◽  
Author(s):  
Masatoshi Ito ◽  
Won-Son Seo ◽  
Kunihito Koumoto
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Grain Size ◽  
Seebeck Coefficient ◽  
Grain Boundaries ◽  
Carrier Concentration ◽  
Thermoelectric Properties ◽  
Carrier Mobility ◽  
Evaporation Method

PbTe thin films with fine grains were successfully fabricated by the gas evaporation method. Thermoelectric properties, i.e., Seebeck coefficient and electrical conductivity, both decreased with decreasing grain size. This was attributed to the decrease in carrier mobility exceeding the increase in carrier concentration with decreasing grain size. It was clarified that the effects of grain boundaries and of oxidation on carrier mobility are considerably large.

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