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Photoelectrical characterization of a new generation diode having GaFeO3 interlayer

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Date
2014
Author
Soylu, M. and Cavas, M. and Al-Ghamdi, A.A. and Gafer, Z.H. and El-Tantawy, F. and Yakuphanoglu, F.
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Abstract
In this work, we have systematically investigated the effects of illumination intensity on the electrical characteristics of GaFeO 3/p-Si heterostructure. The current-voltage (I-V) measurements of the heterostructure based on GaFeO3 thin film were performed in dark and under different illumination intensities. The photocurrent in the reverse biased I-V measurement is strongly sensitive to photo-illumination. The ideality factor (n) and zero-bias barrier height (Φb0) were found to be strongly illumination dependent and while Φb0 decreases, n increases with decreasing illumination. From capacitance-voltage (C-V) characteristics, it has been seen that the capacitance decreases as the frequency increases, exhibiting a continuous distribution of the interface states at frequency range 10 kHz to 1 MHz. The interface state density was determined by conductance method for dark conditions. It is believed that the combination of p-Si and thin GaFeO3 layer will provide new opportunities as a photodiode sensor for visible light sensor applications. © 2014 Elsevier B.V.
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https://www.scopus.com/inward/record.uri?eid=2-s2.0-84894563431&doi=10.1016%2fj.solmat.2014.01.045&partnerID=40&md5=8b3ace604e4adb49f1430334ffd43f50
http://acikerisim.bingol.edu.tr/handle/20.500.12898/4837
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