Novel Negative Capacitance and Conductance in All Temperatures and Voltages of Au/CNTs/n-Si/Al at Low and High Frequencies

Abstract

The structure of carbon nanotube CNTs functioning as p-type material deposited over n-type silicon to produce heterojunction of Au/CNTs/n-Si/Al is presented in this study. This work explored the capacitance and conductance at various frequencies, temperatures, and voltages, the novelty here is that negative capacitance and conductance were observed at high frequencies in all temperatures and voltages, whereas capacitance appeared at both high and low frequencies, such as (2 × 107,1× 107,1 × 102,10) Hz. At high-frequency f = 2 × 107 Hz, the capacitance raises while the conductance decreases; at all temperatures and voltages, the capacitance and conductance exhibit the same behavior at particular frequencies such as 1 × 106,1 × 105,1 × 104,1 × 103 Hz, however their behavior differs at 2 × 107,1 × 107, 1 × 102 and 10 Hz. Investigating the reverse square capacitance with voltage yielded the energy Fermi (Ef), density surface of states (Nss), depletion width (Wd), barrier height, series resistance, and donor concentration (Nd).

Negative Series Resistance (Rs) and Real Part of Impedance (Z′), and Positive and Negative Imaginary Part of Impedance (Z″) at a High Frequency of Au/CNTS/n-Si/Al Structure

“…The structure of Au/CNTS/n-Si/Al synthesized by the simple method by using spin coating technique and its structures by scanning electron microscope, X-ray diffraction, and Raman Spectroscopy studied in detail in Refs. 18,19.…”

Negative Dielectric Constant in Novel Structure of PA-GO Composite /MnO2/Fe3O4/n-Si

“…This structure have high rectification ratio reach to 1200 times, and high Rj. The electrical properties of this structure was investigated by conventional, dv/dlnI, Cheung and Nord method [10][11][12][13][14][15][16][17][18][19][20][21] Experimental Substrates made of silicon monocrystalline were employed. Iron oxide Fe3O4 after dissolved in suitable solvent is then deposited on the substrate.…”