Open AccessElectrical conductivity of MoS2 thin films and graphite under continuous injection to protons
Author(s) -
Г. С. Бурханов,
С. А. Лаченков,
M. A. Koov,
A. U. Bashlakov,
D. V. Prosvirnin
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1758/1/012005
Subject(s) - graphite , electrical resistivity and conductivity , materials science , conductivity , liquid nitrogen , thin film , metal , analytical chemistry (journal) , composite material , chemistry , nanotechnology , electrical engineering , metallurgy , organic chemistry , engineering , chromatography
The electrical conductivity of thin films of MoS 2 and graphite has been studied under conditions of continuous injection of low-energy protons (∼ 1-4 keV). The effect of a sharp increase (by 3-4 orders of magnitude) in the electrical conductivity of substances with a layered structure (MoS 2 and graphite) at T ∼ 293 K has been established. The observed effect increases (from 2 to 10 times) as the temperature decreases from room temperature to liquid nitrogen temperature (T ∼ 77 K) and with increasing number of protons injected into the sample. The established temperature variation of electrical resistance is typical for materials with a metallic type of conductivity. It is shown that a thin surface layer, onto which protons penetrate, is responsible for the change in the electrical conductivity of MoS 2 and graphite films.