Annealing improvement on the localized states of plasma grown boron nitride film assessed through admittance measurements

2009-05-05
ÖZDEMİR, Orhan
Anutgan, Mustafa
Aliyeva-Anutgan, Tamila
Atilgan, Ismail
Katircioglu, Bayram
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 deficient turbostratic structure where more or less parallel hexagonal crystallites of distributed size would be embedded in a disordered phase. The nitrogen deficiency of the film was tried to be restored by annealing treatment under nitrogen atmosphere at two temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS

Suggestions

Acoustic phonons scattering mobility and carrier effective mass in In6S7 crystals
Qasrawi, A. F.; Hasanlı, Nızamı (Elsevier BV, 2006-12-21)
Systematic dark electrical resistivity and Hall coefficient measurements have been carried out in the temperature range of 170-320 K on n-type In6S7 crystals. The analysis of the electrical resistivity and carrier concentration reveals the intrinsic type of conduction with an average energy band gap of similar to 0.75 eV The carrier effective masses of the conduction and valence bands were calculated from the intrinsic temperature-dependent carrier concentration data and were found to be 0.565m(0) and 2.020...
Optical dynamics of MgO/Ga4Se3S interface
Qasrawi, A. F.; Abd-Alrazq, Mariam M.; Hasanlı, Nızamı (Elsevier BV, 2014-01-15)
A new p-n interface made of p-type MgO as an optical window to the n-type Ga4Se3S crystals is investigated by means of optical reflectance, transmittance and absorbance in the incident light wavelength (k) range of 200-1100 nm. The reflectivity spectral analysis as a function of angle of incidence for MgO, Ga4Se3S and the Ga4Se3S/MgO layers revealed Brewster angles of 75 degrees, 80 degrees and 70 degrees with the corresponding dielectric constants of 13.93, 32.16 and eMgO 7: 55eGa(4)Se(3)S, respectively. T...
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...
Size dependent stability and surface energy of amorphous FePt nanoalloy
Akdeniz, Mahmut Vedat; Mehrabov, Amdulla (Elsevier BV, 2019-06-05)
The effects of particle size (2-6 nm) and temperature (300-2700 K) on the stability and local structural evolutions of amorphous equiatomic FePt bulk/nanoalloys have been investigated by combining Embedded Atom Model (EAM) with classical molecular dynamics (MD) simulation method. The three dimensional (3D) atomic configuration of amorphous FePt NPs by means of Voronoi analysis reveals that, deformed bcc (d-bcc) and icosahedron (d-ico) type structures are most probable local atomic configurations for 2-6 nm ...
CONDUCTING POLYMERS OF ANILINE .1. ELECTROCHEMICAL SYNTHESIS OF A CONDUCTING COMPOSITE
DOGAN, S; Akbulut, Ural; Toppare, Levent Kamil (Elsevier BV, 1992-11-01)
We describe an electrochemical synthesis of a conducting composite of polyaniline. Poly(bisphenol A carbonate) was used as the insulating polymer matrix. Composite characterization was made using FT-IR, SEM and DSC data. The conductivities of the composites seemed to be in the order of pure polyaniline as prepared by the same method. Moreover, the above-mentioned methods reveal that the resultant composites have different properties compared to a simple mechanical mixture of the two polymers.
Citation Formats
O. ÖZDEMİR, M. Anutgan, T. Aliyeva-Anutgan, I. Atilgan, and B. Katircioglu, “Annealing improvement on the localized states of plasma grown boron nitride film assessed through admittance measurements,” JOURNAL OF ALLOYS AND COMPOUNDS, pp. 794–803, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/68032.