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Phase transformation in Cu2SnS3 (CTS) thin films through pre-treatment in sulfur atmosphere

Olgar, Mehmet Ali; Başol, Bülent M.; Tomakin, Murat; Bacaksız, Emin (Springer, 2021)

In this study, Cu2SnS3 (CTS) thin films prepared by a two-step sulfurization process were characterized. Cu and Sn metallic layers were first deposited on glass substrates by sputtering and then annealed in-situ while in ...

Photodetector properties of CdSe thin films grown by close space sublimation method

Olgar, Mehmet Ali; Başol, Bülent M.; Polat, İsmail; Tomakin, Murat; Küçükömeroğlu, Tayfur; Bacaksız, Emin (Springer, 2023)

In the present study, CdSe thin films were grown by Close Space Sublimation (CSS) method on glass substrates at elevated temperatures. The prepared films were analyzed through several characterization techniques such as ...

Physical properties of CdS:Ga thin films synthesized by spray pyrolysis technique

Yılmaz, Salih; Polat, İsmail; Olgar, Mehmet Ali; Tomakin, Murat; Töreli, S. B.; Bacaksız, Emin (Springer, 2017)

This paper reports the investigation of physical properties of CdS:Ga thin films grown for the first time by a simple spray pyrolysis method as a function of Ga-doping level from 0 to 8 at.%. X-ray diffraction (XRD), ...

Polarization effects on intersubband absorption in GaN/ZnGeN2 quantum wells

Çakır, Raşit (Igdir University, 2021)

The effects of spontaneous and piezoelectric polarizations on the intersubband absorption in the GaN/ZnGeN2 quantum well are studied. Schrödinger and Poisson equations are solved self-consistently. The first order linear ...

The polarization of X-rays and magnetic photoionization cross-sections for L3 sub-shell

Han, I.; Şahin, M.; Demir, L. (Elsevier, 2009)

The alignment of atoms with inner-shell vacancies resulting from ionization by photons was investigated by measuring the anisotropic emission of L shell X-ray lines. The X-ray line intensities were measured using an Si(Li) ...

Polarized-beam high-energy EDXRF in geological samples

Çevik, Uğur; Akbulut, Songül; Makarovska, Yaraslova; Van Grieken, Rene (0-Belirlenecek, 2013)

Certified reference materials (NIST 1645, BCR 143, IAEA 7, BCR 141, NIES-CRM-02, and IAEA 375) were used for determining the performance of a secondary target energy-dispersive X-ray fluorescence (EDXRF) spectrometer, ...

Precision and accuracy of ST-EDXRF performance for As determination comparing with ICP-MS and evaluation of As deviation in the soil media

Akbulut, Songül; Çevik, Uğur; Van, Aydın Ali; De Wael, Karolien; Van Grieken, Rene (Pergamon-Elsevier Science Ltd, 2014)

The present study was conducted to (i) determine the precision and accuracy of arsenic measurement in soil samples using ST-EDXRF by comparison with the results of ICP-MS analyses and (ii) identify the relationship of As ...

Preparation and characterization of new window material CdS thin films at low substrate temperature (<300 K) with vacuum deposition

Tomakin, Murat; Altunbaş, M.; Bacaksz, Emin; Polat, I. (Elsevier, 2011)

Low-temperature vacuum deposition instead of the commonly used vacuum deposition at high substrate temperatures has been applied to prepare new window material CdS thin films. The structural, optical and electrical properties ...

Processing CdS- and CdSe-containing window layers for CdTe solar cells

Çiriş, Ali; Başol, Bülent M.; Atasoy, Yavuz; Karaca, Abdullah; Tomakin, Murat; Küçükömeroğlu, Tayfur; Bacaksız, Emin (Elsevier, 2021)

The influence of heat treatment steps on the characteristics of (CdS, CdSe) junction partners and on solar cell performance was studied. CdS films were obtained by chemical bath deposition, and CdSe layers were evaporated. ...

Quantum emitter interacting with graphene coating in the strong-coupling regime

Günay, Mehmet; Karanikolas, Vasilios; Şahin, Ramazan; Ovalı, Rasim Volga; Bek, Alpan; Taşgin, Mehmet Emre (Amer Physical Soc, 2020)

We demonstrate the strong coupling of a quantum dot and a graphene spherical shell coating it. Our simulations are based on solutions of three-dimensional Maxwell equations, using a boundary element method approach. ...

Radiation shielding properties of mortars with minerals and ores additives

Baltaş, Hasan; Şirin, Murat; Çelik, Ahmet; Ustabaş, İlker; El-Khayatt, Ahmed Mahmoud (Elsevier Sci Ltd, 2019)

Incorporation of mineral and ores as fine aggregate additives was investigated for its effect on the neutron and gamma-ray shielding properties of cement mortar. Five mortar mixtures have been prepared with different ...

The radiation shielding properties of the low temperature alloys

Aksoy, Canan; Dizman, Serdar; Çakır, Bakiye; Taylan Koparan, Ezgi; Tıraşoğlu, Engin (Afyon Kocatepe University, 2021)

Solder alloys are significant for many applications. In addition to the physical electrical and magnetic properties of solders, it is of great importance to determine the shielding properties of the materials in order ...

Radiation shielding tests of crosslinked polystyrene-b-polyethyleneglycol block copolymers blended with nanostructured selenium dioxide and boron nitride particles

Cinan, Zehra Merve; Erol, Burcu; Başkan, Taylan; Mutlu, Saliha; Ortaç, Bülent; Savaşkan Yılmaz, Sevil; Yılmaz, Ahmet Hakan (MDPI, 2022)

In this work, gamma-ray shielding features of crosslinked polystyrene-b-polyethyleneglycol block copolymers (PS-b-PEG) blended with nanostructured selenium dioxide (SeO2) and boron nitride (BN) particles were studied. This ...