Yazar "Küçükömeroğlu, Tayfur" için listeleme
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Alloying and phase transformation in CdS/CdSe bilayers annealed with or without CdCl2
Çiriş, Ali; Başol, Bülent M.; Yılmaz, Sevil Savaşkan; Atasoy, Yavuz; Tomakin, Murat; Küçükömeroğlu, Tayfur; Bacaksız, Emin (Elsevier Sci Ltd, 2019)The present paper studies the structural, compositional, morphological and optical properties of thin CdS/CdSe stacks annealed in an inert atmosphere or subjected to a CdCl2 treatment. the bilayer stacks were fabricated ... -
Characterization of Cu(In,Ga)(Te,S)(2) thin films grown on stainless steel foil substratesIo
Karaca, Abdullah; Başol, Bülent M.; Olgar, Mehmet Ali; Büyüklimanlı, Temel; Tomakin, Murat; Küçükömeroğlu, Tayfur; Bacaksız, Emin (IOP Publishing, 2023)In this study, Cu(In,Ga)(Te,S)(2) (CIGTS) thin films with [Ga]/([In] +/- [Ga]) atomic ratios in the ranges of 0.22-0.28 and 0.50-0.67 were fabricated using a two-stage technique. During the first stage of the technique, ... -
CZTS layers formed under sulfur-limited conditions at above atmospheric pressure
Olgar, Mehmet Ali; Bacaksız, Emin; Tomakin, Murat; Küçükömeroğlu, Tayfur; Başol, Bülent M. (Elsevier Sci Ltd, 2019)In this study CZTS thin films were grown by a two-stage process that involved sequential sputter deposition of metallic Cu, Zn, and Sn layers on Mo coated glass substrates followed by RTP annealing in a sulfur atmosphere ... -
Deposition of CdSeTe alloys using CdTe-CdSe mixed powder source material in a close-space sublimation process
Çiriş, Ali; Başol, Bülent M.; Atasoy, Yavuz; Karaca, Abdullah; Küçükömeroğlu, Tayfur; Tomakin, Murat; Bacaksız, Emin (Springer, 2021)CdSexTe1-x films were deposited using a close-space sublimation (CSS) method and CdSe + CdTe mixed powders as the source material. Composition of the source was changed to obtain films with varying x values, and the resulting ... -
Effect of CdS and CdSe pre-treatment on interdiffusion with CdTe in CdS/CdTe and CdSe/CdTe heterostructures
Çiriş, Ali; Başol, Bülent M.; Atasoy, Yavuz; Küçükömeroğlu, Tayfur; Karaca, Abdullah; Tomakin, Murat; Bacaksız, Emin (Elsevier, 2021)High efficiency CdTe solar cell structure has the configuration of CdS/CdSe/CdTe. Depending on the deposition and post deposition techniques employed, this stack is often subjected to high temperatures, often in presence ... -
Effect of ultra-thin CdSexTe1−x interface layer on parameters of CdTe solar cells
Çiriş, Ali; Başol, Bülent M.; Atasoy, Yavuz; Karaca, Abdullah; Tomakin, Murat; Küçükömeroğlu, Tayfur; Bacaksız, Emin (Elsevier, 2022)Effects of an ultra-thin CdSexTe1-x junction interface layer on CdTe solar cell parameters were investigated employing a CdSexTe1-x/CdTe absorber structure. CdSexTe1-x thin films with varying composition were grown by ... -
The effect of ZnCl2 and CdCl2 treatment on ZnS/CdS junction partner on CdTe cell performance
Çiriş, Ali; Atasoy, Yavuz; Karaca, Abdullah; Tomakin, Murat; Küçükömeroğlu, Tayfur; Bacaksız, Emin (Elsevier, 2022)In this study, the impacts of ZnCl2 and CdCl2 treatments on the structural and optical properties of ZnS/CdS bilayers and on the parameters of CdTe solar cells with ZnS/CdS junction partners were investigated. CdS and ZnS ... -
Growth and characterization of CT(S,Se) thin films and Al/n-Si/p-CT(S,Se)/Mo heterojunction diode application employing a two-stage process
Bayazıt, Tuğba; Olgar, Mehmet Ali; Küçükömeroğlu, Tayfur; Bacaksız, Emin; Tomakin, Murat (Elsevier, 2023)Cu2SnS3 (CTS), Cu2Sn(S,Se)3 (CTSSe), and Cu2SnSe3 (CTSe) thin films were deposited on n-type silicon wafer substrates using a two-stage process. This process involved drop-coating Cu-Sn precursors, which is different from ... -
Growth and characterization of Cu2SnS3 (CTS), Cu2SnSe3 (CTSe), and Cu2Sn(S,Se)(3) (CTSSe) thin films using dip-coated Cu-Sn precursor
Bayazıt, Tuğba; Olgar, Mehmet Ali; Küçükömeroğlu, Tayfur; Bacaksız, Emin; Tomakin, Murat (Springer, 2019)Ternary compounds Cu2SnS3, Cu2SnSe3 and Cu2Sn(S,Se)(3) thin films used in thin film solar cell applications were prepared at the first time by such a two-stage process that includes dip-coating of Cu-Sn precursors as ... -
Impact of CdSeTe and CdSe film deposition parameter on the properties of CdSeTe/CdTe absorber structure for solar cell applications
Çiriş, Ali; Atasoy, Yavuz; Tomakin, Murat; Karaca, Abdullah; Küçükömeroğlu, Tayfur; Bacaksız, Emin (Institute of Physics, 2024)In this study, the effect of depositing CdSeTe and CdTe layers at different substrate temperatures (STs) by evaporation in vacuum on the properties of the CdSeTe/CdTe stacks was investigated. First, CdSeTe layers in stack ... -
Improvement in performance of SnSe-based photodetectors via post deposition sulfur diffusion
Yılmaz, Salih; Başol, Bülent M.; Polat, İsmail; Olğar, Mehmet Ali; Bayazıt, Tuğba; Küçükömeroğlu, Tayfur (Elsevier, 2024)The work represents an enhancement in the photodetector properties of thermally evaporated SnSe thin films through both annealing and sulfurization processes. X-ray diffraction analysis showed the formation of SnSe1-xSx ... -
Optical and electrical optimization of dysprosium-doped CdS thin films
Yılmaz, Salih; Polat, İsmail; Tomakin, Murat; Töreli, S. B.; Küçükömeroğlu, Tayfur; Bacaksız, Emin (Springer, 2018)As-grown and Dy-doped CdS thin films containing concentrations of 1, 2, 3, 4 and 5 at.% Dy atom were prepared via chemical spray route on glass substrates. the constructed thin films were searched through analyzing their ... -
Performance assessment of oxygenated CdS films-based photodetector
Polat, İ.; Yılmaz, S.,; Küçükömeroğlu, Tayfur; Tomakin, Murat; Bacaksız, Emin (Elsevier, 2024)dS films were grown by thermal evaporation on glass substrates. After growth process, samples were oxygenated at 400 °C at various gas pressures for 5 mins employing rapid thermal process. The produced CdS films were used ... -
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 ... -
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. ... -
Sm-doped CdS thin films prepared by spray pyrolysis: a structural, optical, and electrical examination
Yılmaz, Salih; Polat, İsmail; Tomakin, Murat; Küçükömeroğlu, Tayfur; Töreli, S. B.; Bacaksız, Emin (Springer, 2018)Virgin and Sm-doped CdS thin films were prepared by spray pyrolysis route on glass substrates. the influences of Sm-doping amount on structural, topographical, optical and electrical properties were examined. It was found ...
