Charge transport mechanisms and density of interface traps in MnZnO/p-Si diodes

Date

2014-03-25

Author

Tascioglu, Ilke
Farooq, W. A.
Turan, Raşit
ALTINDAL, ŞEMSETTİN
YAKUPHANOĞLU, FAHRETTİN

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

223
views

0
downloads

MnZnO films were grown onto p-Si substrate by sol-gel spin coating method. The electrical properties of the diodes were investigated at room temperature via the current-voltage (I-V), capacitance-voltagefrequency (C-V-f), and conductance-voltage-frequency (G-V-f) methods by considering the effect of the interface trap density (D-it) and series resistance (Rs) of the diodes. The rectifying ratio (RR) values of undoped and Mn-doped ZnO/ p-Si diodes (at +/- 4 V) were found to be 275 and 2031, respectively. Mn doping decreases leakage current and increases shunt resistance (R-sh). Also, the reasons of discrepancies in barrier height values determined from different methods were discussed. The C-V and G-V measurements were performed at various frequencies. We observe additional contribution to the capacitance at low frequencies due to interface traps which can follow the ac test signal easily. The density of interface traps (D-it) determined from Hill-Coleman method was also presented for making comparison. The D-it values vary from 9.24 x 10(11) to 1.67 x 10(13) eV(-1) cm(-2) and 2.06 x 10(11) to 2.54 x 10(12) eV(-1) cm(-2) for undoped and Mn-doped ZnO/p-Si diodes, respectively.

Subject Keywords

Mechanical Engineering, Materials Chemistry, Mechanics of Materials, Metals and Alloys

URI

https://hdl.handle.net/11511/39237

Journal

JOURNAL OF ALLOYS AND COMPOUNDS

DOI

https://doi.org/10.1016/j.jallcom.2013.12.043

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

Liquid steel flow in continuous casting machine: Modelling and measurement Yavuz, Mehmet Metin (Informa UK Limited, 2011-08-01) Single phase (liquid steel) and two-phase (liquid steel and argon bubbles) three-dimensional computational fluid dynamic and heat transfer models were developed for the continuous casting machines of ArcelorMittal. The computational domains include tundishes, slide gates, submerged entry nozzles and moulds. The effects of buoyancy, tundish design, tundish practices, nozzle design and caster practices on flow structure were investigated. Mathematical modelling is discussed in detail. In addition, submeniscus...
Electrochemical decomposition of SiO2 pellets to form silicon in molten salts Ergul, Emre; Karakaya, İshak; Erdogan, Metehan (Elsevier BV, 2011-01-21) Direct electrochemical reduction of porous SiO2 pellets in molten CaCl2 salt and CaCl2-NaCl salt mixture was investigated by applying 2.8 V potential. The study focused on the effects of temperature, particle size of SiO2 powder starting material and the behavior of cathode contacting materials during electrochemical reduction process. The starting materials and the electrolysis products were characterized by X-ray diffraction analysis and scanning electron microscopy mainly. The studies showed that smaller...
Annealing improvement on the localized states of plasma grown boron nitride film assessed through admittance measurements ÖZDEMİR, Orhan; Anutgan, Mustafa; Aliyeva-Anutgan, Tamila; Atilgan, Ismail; Katircioglu, Bayram (Elsevier BV, 2009-05-05) Boron nitride (BN) thin film was grown by plasma enhanced chemical vapor deposition (PECVD) technique and was investigated by UV-Visible transmission, Fourier transform infrared (FTIR) and ac conductance spectroscopies. Mainly the density of electronic localized states (D-it) at BN/Si interface was obtained by continuum and statistical models of ac conductance through an MIS structure (Al/BN film/Si). The origins of the electronic defects have been outlined and discussed within the frame of a nitrogen defic...
CONDUCTING POLYMERS OF ANILINE .2. A COMPOSITE AS A GAS SENSOR DOGAN, S; Akbulut, Ural; YALCIN, T; SUZER, S; Toppare, Levent Kamil (Elsevier BV, 1993-09-01) The gas sensing ability of electrochemically prepared pure polyaniline and polyaniline-poly(bisphenol-A carbonate) films is investigated. The responses of the composite films to several vapours are more well defined and reproducible compared to the pure conducting polymer. The changes in resistance as determined via the two-probe technique are well defined down to a level of 0.025% vol./vol. ammonia. The possible reason for such a difference is discussed. The structure of the composite is examined through p...
Electrolytic magnesium production and its hydrodynamics by using an Mg-Pb alloy cathode Demirci, Goekhan; Karakaya, İshak (Elsevier BV, 2008-10-06) Physical interaction of magnesium and chlorine was minimized by collecting magnesium in a molten Ph cathode at the bottom of the electrolyte and placing anode at the top where the chlorine gas was evolved. Thus the magnesium losses associated with the formation of suspending droplets and fine magnesium particles were eliminated and current losses were mainly due to the recombination reaction of dissolved magnesium and chlorine. Current yield changed by changing the tip angle of the conical anode. It was due...

Citation Formats

I. Tascioglu, W. A. Farooq, R. Turan, Ş. ALTINDAL, and F. YAKUPHANOĞLU, “Charge transport mechanisms and density of interface traps in MnZnO/p-Si diodes,” JOURNAL OF ALLOYS AND COMPOUNDS, pp. 157–161, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39237.