Study of the electrical and electronic properties of crystalline molybdenum disulfide (MoS2-3R) semiconductor nano using alternating current (AC) measurements

Abstract

MoS 2 nanostructures were prepared using the hydrothermal method by reacting ammonium heptamolybdate tetrahydrate ((NH 4 ) 6 Mo 7 O 24 4H 2 O) with citric acid monohydrate (C 6 H 8 O 7 H 2 O) in distilled water with the presence of sodium sulfide (Na 2 S). The surface structure studies of MoS 2 showed that the size of the surface clusters of the studied tablet is of the order of 50 -100 nm. Using measurements (Zetasizer Nano Series), we found that the particle sizes ranged from 150 -350 nm. Alternating current (LCR) measurements were made for (tablet-MoS 2 ) under a constant temperature T = 10 • C. Measurements of the parallel electrical capacitance (C p ) in terms of frequency (F ) of tablet-MoS 2 showed a sharp drop in the value of the electrical capacitance (C p ) with an increase in frequency within the range 20 Hz -16 kHz. It is shown that the series capacitance increased with the increase of the applied potential.