Complex dielectric permittivity, electric modulus and electrical conductivity analysis of Au/Si3N4/p-GaAs (MOS) capacitor

Abstract

RF magnetron sputtering was used to grow silicon nitride (Si3N4) thin film on GaAs substrate to form metal–oxide–semiconductor (MOS) capacitor. Complex dielectric permittivity (ε*), complex electric modulus (M*) and complex electrical conductivity (σ*) of the prepared Au/Si3N4/p-GaAs (MOS) capacitor were studied in detail. These parameters were calculated using admittance measurements performed in the range of 150 K-350 K and 50 kHz-1 MHz. It is found that the dielectric constant (ε′) and dielectric loss (ε″) value decrease with increasing frequency. However, as the temperature increases, the ε′ and ε″ increased. Ac conductivity (σac) was increased with increasing both temperature and frequency. The activation energy (Ea) was determined by Arrhenius equation. Besides, the frequency dependence of σac was analyzed by Jonscher’s universal power law (σac = Aωs). Thus, the value of the frequency exponent (s) were determined.

Dielectric, Conductivity and Modulus Properties of Au/ZnO/p-InP (MOS) Capacitor

“…This deals with the increase in orientation polarization, which leads to an increase in dielectric constant. [22][23][24][25][26][27][28][29][30][31][32][33] The mobility of charge carriers increases due to increased temperature. This case causes an increase in the dielectric loss.…”

Structure, properties, and antibacterial behavior of nickel oxide reinforced natural rubber nanocomposites for flexible electronic applications

“…The AC conductivity of NR and its composites shows the same nature as exhibited in Figure 12. The value of AC conductivity is directly related to dielectric constant as per the following equation 37 Where , are the dielectric permittivity of free space and the sample, respectively, is the angular frequency.…”

“…The value of AC conductivity is directly related to dielectric constant as per the following equation. 37 σ AC ¼ ε 0 ω ε r Where ε 0 , ε r are the dielectric permittivity of free space and the sample, respectively, ω is the angular frequency.…”

Charge recombination suppression in dye-sensitized solar cells by tuning the dielectric constant of triphenylamine dyes with altering π-bridges from naphthalene to anthracene units

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