Network analysis of semiconducting Zn1-xCdxS based photosensitive device using impedance spectroscopy and current-voltage measurement
By Datta, Joydeep; Das, Mrinmay; Dey, Arka; Halder, Soumi; Sil, Sayantan; Ray, Partha Pratim
Published in Applied Surface Science
NULL
2017
Abstract
Abstract ZnCdS is an intermediate ternary alloy type semiconducting material which has huge tunable structural, optical and electrical properties. Here, we have synthesized Zn1-xCdxS compound and characterized its structural, optical and charge transport properties. It is seen that the particle size is greatly influenced by the amount of alloy concentration of cadmium. The performance of semiconductor device such as Schottky diode depends mainly on the charge transportation through the metal-semiconductor junction. So, we have fabricated Al/Zn1-xCdxS/ITO device and investigated the bias dependent impedance properties through equivalent circuit network analysis to study the electron lifetime and interfacial region resistance. The result of network analysis indicates that the charge transportation through Al- Zn0.6Cd0.4S is better than the other fabricated devices. For further explanation, we have studied the capacitance-voltage (C
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