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Erschienen in: Journal of Materials Science: Materials in Electronics 23/2020

19.10.2020

Temperature dependence of interface state density distribution determined from conductance–frequency measurements in Ni/n-GaP/Al diode

verfasst von: S. Duman, K. Ejderha, I. Orak, N. Yıldırım, A. Turut

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 23/2020

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Abstract

The conductance measurements of the non-annealed (D1) and 400 °C annealed (D2) Ni/n-GaP/Al diodes were made over a wide frequency range of (10 kHz to 5 MHz) and temperature of (100–320 K with steps of 20 K) with bias voltage as a parameter. The capacitance and conductance measurement method is one of the most popular non-destructive methods to obtain information about metal–semiconductor (MS) diode interfaces. The interface state density distribution curves were determined over the band-gap energy near the semiconductor energy midgap. The interface state density (Dit) has been seen to be of the order of ∼1012 eV−1 cm−2. The DitT curves have been plotted for different values of bias voltage. The value of Dit increased with increasing measurement temperature, and with increasing voltage from negative bias to positive bias voltage for both diodes. It was seen that the Dit value for D2 diode was greater than that for the D1 diode at each measurement temperature and bias voltage. It was seen in the interface state energy distribution or density distribution curves that the value of Dit has increased from the valence band maximum (Ev) towards conduction band minimum (Ec) at each measurement temperature.

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Metadaten
Titel
Temperature dependence of interface state density distribution determined from conductance–frequency measurements in Ni/n-GaP/Al diode
verfasst von
S. Duman
K. Ejderha
I. Orak
N. Yıldırım
A. Turut
Publikationsdatum
19.10.2020
Verlag
Springer US
Erschienen in
Journal of Materials Science: Materials in Electronics / Ausgabe 23/2020
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-020-04638-3

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