UDC 53.097
STUDY OF CHARGE TRANSFER WITH MOTT MODEL USING LOW-FREQUENCY NOISE DATA
V. A. Sokurenko, post-graduate student, J.R., TUSUR, Tomsk, Russia;
orcid.org/0009-0007-3378-0380, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Yu. V. Sakharov, Dr. in technical sciences, Professor, head of the Department of FE, TUSUR, Tomsk, Russia; orcid.org/0000-0002-7044-6900, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
P. E. Troyan, Dr. in technical sciences, Professor, the Department of FE, TUSUR, Tomsk, Russia;
orcid.org/ 0000-0002-7349-0536, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
In this work, the electrical conductivity of a carbon resistive film was investigated by means of a com bined analysis of current–voltage characteristics and low-frequency 1/f noise characteristics in Mott coordi nates within temperature range from –150 °C to +110 °C, at fixed voltage of 3 V, and in frequency bands Δf: 0.5 Hz – 10 Hz; 0.5 Hz – 1 kHz; 0.5 Hz – 10 kHz. The aim of the study is to refine a conductivity model and to assess the potential of noise analysis as a tool for diagnostics and reliability prediction of resistive ele ments. The author have shown that noise measurement frequency range significantly affects the identified charge transport mechanism: from nearest neighbor hopping at low frequencies (n = 1) to classical two dimensional and three-dimensional variable-range hopping regimes at higher frequencies (n = 3 – 4). The obtained results make it possible to refine the electrical conductivity model of the material studied and con firm high informativeness of noise analysis for the diagnostics of structural features. The analysis results can be applied to the prediction of resistive elements reliability.
Key words: low-frequency noise, current-voltage characteristics, Mott transitions, activation energy, electrical conductivity, diagnostics.