A Study on the Wide Frequency Range Electrical Variables in the Al/Coumarin–PVA/p-Si Diodes at Room Temperature

Authors : Selçuk DEMİREZEN

Pages : 53-61

Doi:10.54287/gujsa.1202745

View : 45 | Download : 11

Publication Date : 2023-03-28

Article Type : Research Paper

Abstract :Coumarin-PVA is deposited onto p-Si wafers using the spin coating technique. I examined the fundamental electrical variables of the Al/CoumarinPVA/p-Si type Schottky barrier diodes insert ignore into journalissuearticles values(SBDs);, by utilizing capacitance/voltageinsert ignore into journalissuearticles values(C-V); and conductance/voltage insert ignore into journalissuearticles values(G-V); measurements at different frequencies varied from 10kHz to1MHz. I have thoroughly explored how the CoumarinPVA interlayer, series resistance insert ignore into journalissuearticles values(Rs); and surface states insert ignore into journalissuearticles values(Nss); affect the electrical properties of SBDs. In order to remove Rs\`s influence on the observed C and G values, I corrected them. The observed high values of C/G measured at low frequencies result from the existence of interfacial states. There is evidence that while NA decreases exponentially with increasing frequency, B increases exponentially. A particular distribution of Nss density, polarization processes, and the existence of an interfacial layer can all contribute to explaining these characteristic features of them. According to experimental findings, I conclude that the interfacial polymer CoumarinPVA layer as well as the Nss and Rs also have a significant impact on the C/G-V quantities of SBDs.
Keywords : Coumarin PVA interlayer Surface states Frequency and voltage dependency Series resistance, Coumarin PVA interlayer, Surface states, Frequency and voltage dependency, Series resistance

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