Kurum Yazarı "Keskenler, Eyüp Fahri" MÜF, Elektrik-Elektronik Mühendisliği Bölümü Koleksiyonu İçin Listeleme
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Characteristic evaluation on spray-deposited WFTO thin films as a function of W doping ratio
Turgut, Güven; Keskenler, Eyüp Fahri; Aydın, Serdar; Tatar, Demet; Sönmez, Erdal; Doğan, Seydi; Düzgün, Bahattin (Nonferrous Metals Soc China, 2014)In this work, F and F + W simultaneously doped SnO2 highly transparent conducting thin films were deposited on glass substrates at (500 +/- A 5) A degrees C temperature by the spray pyrolysis method. Microstructural, ... -
The characteristic investigation of spray coated W incorporated in oxide thin films
Turgut, G.; Keskenler, Eyüp Fahri (Allerton Press Incorporation, 2016)W incorporated tin oxide (TO) thin films were grown via spray pyrolysis with various tungsten contents. The films were observed to be polycrystalline tetragonal crystal nature with (301) and (211) preferential planes. From ... -
Effect of annealing temperature on K-shell X-ray fluorescence parameters of zinc oxide thin films prepared by the sol-gel method
Şirin, Murat; Baltaş, Hasan; Kiriş, Erkan; Keskenler, Eyüp Fahri (Taylor & Francis Inc, 2019)Zinc oxide thin films were grown on a glass substrate by a sol-gel process using a spin-coating technique. the obtained thin films were annealed between 350 degrees C and 550 degrees C in 50 degrees C steps and were then ... -
The effect of fluorine and tungsten co-doping on optical, electrical and structural properties of tin(IV) oxide thin films prepared by sol-gel spin coating method
Keskenler, Eyüp Fahri; Turgut, Güven; Aydın, Serdar; Doğan, Seydi; Düzgün, Bahattin (Technical Univ Wroclaw, 2013)Fluorine and tungsten co-doped tin(IV) oxide (WFTO) thin films have been prepared first time by a sol gel spin coating method. the effect of F and W co-dopant ratio on optical, electrical and structural properties of SnO2 ... -
Effect of Nb doping on structural, electrical and optical properties of spray deposited SnO2 thin films
Turgut, Güven; Keskenler, Eyüp Fahri; Aydın, Serdar; Sönmez, Erdal; Doğan, Seydi; Düzgün, Bahattin; Ertuğrul, Mehmet (Academic Press Ltd- Elsevier Science Ltd, 2013)Nb doped SnO2 transparent conducting thin films were deposited by spray pyrolysis method. Microstructural, morphological, electrical and optical properties of the films were investigated as a function of niobium (Nb) doping, ... -
Effects of Na doping on CdS thin films and n-CdS/p-Si solar cells via chemical bath deposition method
Nevruzoğlu, Vagif; Tomakin, Murat; Keskenler, Eyüp Fahri; Öztürk, Göktürk (Korean Assoc Crystal Growth, Inc, 2017)Un-doped and Na doped CdS thin films were deposited by chemical bath deposition method. the effects of Na doping on structural, optical and electrical properties of CdS thin films and n-CdS/p-Si heterojunction were ... -
Effects of ultraviolet light on B-doped CdS thin films prepared by spray pyrolysis method using perfume atomizer
Novruzov, V. D.; Keskenler, Eyüp Fahri; Tomakin, Murat; Kahraman, Süleyman; Görür, Osman (Elsevier Science Bv, 2013)Boron doped CdS thin films were deposited by spray pyrolysis method using perfume atomizer. the effects of ultraviolet light on the structural, optical and electrical properties of B-doped CdS thin films were investigated ... -
Evaluation of structural and optical properties of Mn-Doped ZnO thin films synthesized by Sol-Gel technique
Keskenler, Eyüp Fahri; Doğan, Seydi; Turgut, Güven; Gürbulak, Bekir (Springer, 2012)Undoped ZnO and Mn-doped ZnO (MZO) films with 0.25, 0.50, and 0.75 mol pct were synthesized onto glass substrates by sol-gel spin-coating technique, and the effects of Mn on structural, morphologic, and optical properties ... -
Fabrication and characterization of Al/Cu2ZnSnS4/n-Si/Al heterojunction photodiodes
Turgut, Güven; Keskenler, Eyüp Fahri; Aydın, Serdar; Doğan, Seydi; Duman, Songül; Özçelik, Şeyma; Gürbulak, Bekir; Esen, Bayram (Wiley-V C H Verlag Gmbh, 2014)Cu2ZnSnS4 (CZTS) thin film has been synthesized by a sol-gel spin-coating technique on the n-Si substrate to fabricate heterojunction photodiodes. An X-ray diffraction study has shown that the film is polycrystalline with ... -
Fabrication and characterization of Au/n-ZnO/p-Si/Al sandwich device with Sol-gel spin coating method
Keskenler, Eyüp Fahri; Keskenler, Mustafa Furkan; Tomakin, Murat; Nevruzoğlu, Vagif (Springer, 2019)ZnO thin films with the n-type properties were obtained on the p-Si substrates for multi-layered sandwich device depositing by sol-gel method. Au and Al were conducted on two side of hetero-junction by PVD technique. From ... -
Growth and characterization of Ag/n-ZnO/p-Si/Al heterojunction diode by sol-gel spin technique
Keskenler, Eyüp Fahri; Tomakin, Murat; Doğan, Seydi; Turgut, Güven; Aydın, Serdar; Duman, Songül; Gürbulak, Bekir (Elsevier Science Sa, 2013)Polycrystalline ZnO thin film was obtained on the p-Si for the heterojunction diode fabrication by sol-gel method. X-ray diffraction study showed that the texture of the film is hexagonal with a strong (002) preferred ... -
The influence of Y contribution on crystallographic, topographic and optical properties of ZnO: A heterojunction diode application
Turgut, Güven; Duman, Songül; Keskenler, Eyüp Fahri (Academic Press Ltd- Elsevier Science Ltd, 2015)Pure and yttrium (Y) doped ZnO samples were fabricated on micro slide glasses and p-Si wafers for device application via a simple and cheap sol-gel route using a spin coater. the characterization results of XRD, SEM and ... -
Investigation of Cd1-xCoxS diluted magnetic semiconductor thin films fabricated by chemical bath deposition method
Tomakin, Murat; Öncel, Yılmaz; Keskenler, Eyüp Fahri; Nevruzoğlu, Vagif; Onuk, Zuhal; Görür, Osman (Elsevier Science Sa, 2014)Chemical bath deposition method was used for preparation of Cd1-xCoxS thin films. the effects of Co doping and thermal annealing on structural, optical, electrical and magnetic properties of CdS thin films were investigated. ... -
An investigation of the Nb doping effect on structural, morphological, electrical and optical properties of spray deposited F doped SnO2 films
Turgut, Güven; Keskenler, Eyüp Fahri; Aydın, Serdar; Yılmaz, Mehmet; Doğan, Seydi; Düzgün, Bahattin (Iop Publishing Ltd, 2013)F and Nb + F co-doped SnO2 thin films were deposited on glass substrates by the spray pyrolysis method. the microstructural, morphological, electrical and optical properties of the 10 wt% F doped SnO2 (FTO) thin films were ... -
Investıgatıon of boron and yttrıum dopıng effect on structural, electrıcal and optıcal propertıes of sol-gel spın coated sno2 thın fılms
Keskenler, Eyüp Fahri; Turgut, Güven; Aydın, Serdar; Dilber, Refik; Turgut, Ümit (Natl Inst R&D Materials Physics, 2013)In this study, B and Y doped SnO2 thin films were prepared by sol-gel spin coating method. the structural, electrical and optical properties of doped SnO2 were investigated as a function of B and Y doping content. From XRD ... -
Optical and structural properties of bismuth doped ZnO thin films by sol-gel method: urbach rule as a function of crystal defects
Keskenler, Eyüp Fahri; Aydın, Serdar; Turgut, Güven; Doğan, Seydi (Polish Acad Sciences Inst Physics, 2014)Bismuth (Bi) doped zinc oxide (ZnO:Bi) thin films were prepared on glass substrates by sol gel spin coating technique using homogeneous precursor solutions, and effects of Bi doping on the structural and optical properties ... -
Schottky diode fabrication via cold substrate evaporated ag on sol-gel derived ZnO ultra-thin films for semiconductor devices
Keskenler, Eyüp Fahri; Haıdar, M. (S.C. Virtual Company of Phisics S.R.L, 2020)ZnO thin films were grown on glass and SnO2 substrate by using Sol-gel method with a simple, low cost-temperature and high controlled away. ZnO thin films were contacted with Ag in two different temperatures at 200K (cold ... -
Single and multiple doping effects of silicon-boron and fluorine on ZnO thin films deposited with sol-gel spin coating technique
Turgut, Güven; Keskenler, Eyüp Fahri (Springer, 2014)Undoped, Si and B single doped, Si-B co-doped and Si-B-F triple doped ZnO thin films were grown by sol-gel spin coating method. Effects of these doping elements on microstructural, morphological and optical properties were ... -
Solution and performance analysis of subset sum problem with a new metaheuristic approach
Keskenler, Mustafa Furkan; Keskenler, Eyüp Fahri (TUBITAK, 2020)Subset sum problem was solved with two different metaheuristic approaches in the study. After these approaches, which are simulated annealing and genetic algorithms, a hybrid model of two methods was created and better ... -
Structural characterizations and optical properties of InSe and InSe: Ag semiconductors grown by Bridgman/Stockbarger technique
Gürbulak, Bekir; Sata, Mehmet; Doğan, Seydi; Duman, Songül; Ashkhasi, Afsoun; Keskenler, Eyüp Fahri (Elsevier, 2014)Undoped InSe and Ag doped InSe (InSe:Ag) single crystals have been grown by using the Bridgman/Stockbarger method. the freshly cleaved crystals have mirror-like surfaces even without using mechanical treatment. the structure ...