Browsing by Author "Doğan, Seydi"
Now showing items 1-20 of 32
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4H-SiC photoconductive switching devices for use in high-power applications
Doğan, Seydi; Teke, Ali; Huang, Daming; Morkoc, Hadis H.; Roberts, CB; Parish, John; Ganguly, Biswa (Amer Inst Physics, 2003)Silicon carbide is a wide-band-gap semiconductor suitable for high-power high-voltage devices and it has excellent properties for use in photoconductive semiconductor switches (PCSSs). PCSS were fabricated as planar ... -
Bluetooth beacon teknolojisi kullanarak lokasyon ve müze eser tanıtım uygulaması gerçekleştirilmesi
Aydalka, Sevgi Cansu (Balıkesir Üniversitesi Fen Bilimleri Enstitüsü, 2018)İç mekan lokasyon işlemlerinde açık alanlarda kullanılan teknolojiler yeterli gelmediği durumlarda kapalı alan teknolojileri geliştirilmeye ihtiyaç duyulmaktadır. Bu tez çalışmasında Bluetooth Low Energy (BLE) teknolojisinden ... -
Characteristic evaluation on spray-deposited WFTO thin films as a function of W doping ratio
Güven, Turgut; Keşkenler, Eyüp Fahri; Aydın, Serdar; Demet, Tatar; 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, ... -
Classification of explosives materials detected by magnetic anomaly method
Gürkan, Serkan; Karapınar, Mustafa; Doğan, Seydi (IEEE, 2017)In this study, it is aimed to classify buried explosives detected by magnetic anomaly method by means of nearest neighborhood classification algorithm. In this context, buried object data acquisition system using passive ... -
A comprehensive review of ZnO materials and devices
Özgür, Ümit; Alivov, YI.; Teke, Ali; Reshchikov, MA; Doğan, Seydi; Avrutin, V; Cho, SJ.; Morkoc, H. (Amer Inst Physics, 2005)The semiconductor ZnO has gained substantial interest in the research community in part because of its large exciton binding energy (60 meV) which could lead to lasing action based on exciton recombination even above room ... -
Design of a data acquisition system for passive detection of buried explosives
Gürkan, Serkan; Karapınar, Mustafa; Doğan, Seydi (IEEE, 2017)In this study; a system has been designed to detect buried explosives which contains ferromagnetic materials by means of magnetic anomalies caused by these explosives. In order to detect these materials, a passive measurement ... -
Design of a multi-channel quartz crystal microbalance data acquisition system
Karapınar, Mustafa; Gürkan, Serkan; Öner, Poyraz Alper; Doğan, Seydi (IOP Publishing, 2018)In this study a multi-channel data acquisition system has been designed, by which mass changes in small quantities can be monitored and recorded by means of a quartz crystal microbalance (QCM) technique. The whole system ... -
Designing a portable data acquisition system for human-computer interface applications
Gürkan, Serkan; Öner, Poyraz Alper; İstanbullu, Ayhan; Doğan, Seydi (IEEE, 2015)In this study, a portable electrooculogram (EOG) data acquisition sytem were designed and applied for human computer interface (HCI) applications. EOG signals sensed from horizontal and vertical eye movements were detected ... -
Detection and imaging of underground objects for distinguishing explosives by using a fluxgate sensor array
Gürkan, Serkan; Karapınar, Mustafa; Doğan, Seydi (MDPI, 2019)Active and passive techniques are two different techniques with which to detect buried explosives. In practice, the most preferred active method works by broadcasting a signal underground. This signal may stimulate the ... -
Development of a multichannel bioinstrumentation system for human-computer interface applications
Öner, Poyraz Alper; Doğan, Seydi; Gürkan, Serkan; Karapınar, Mustafa (Iğdır Üniversitesi, 2022)A multi-channel measurement system used to measure electrocardiogram (ECG), electroencephalogram (EEG), electromyogram (EMG) and electrooculogram (EOG) biosignals has been designed and prototyped. The designed system ... -
Development of a photovoltaic panel emulator and LabVIEW-based application platform
Gürkan, Serkan; Karapınar, Mustafa; Sorgunlu, Hasan; Öztürk, Onur; Doğan, Seydi (Wiley, 2020)In this study, a photovoltaic (PV) panel emulator was developed based on a single diode model of a PV cell, and four prototypes of this kind emulator have been produced. In addition, an electronic potentiometer and a central ... -
Digital signal processing and classification study for electrooculogram signals
Gürkan, Serkan; Öner, Poyraz Alper; İstanbullu, Ayhan; Doğan, Seydi (Ieee, 2015)In this study, EOG signals recorded by an developed electronic hardware are processed by digital signal processing techniques and classified with Nearets Neighbor method. The DC component of the signal is suppressed with ... -
The effect of fluorine and tungsten co-doping on optical, electrical and structural properties of tin (IV) oxide thin films prepared by solgel 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 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, ... -
Excitonic fine structure and recombination dynamics in single-crystalline ZnO
Teke, Ali; Özgür, Ümit; Doğan, Seydi; Gu, Xing; Morkoç, Hadis; Nemeth, Bill; Nause, J.; Everitt, Henry O. (Amer Chemical Soc, 2004)The optical properties of a high quality bulk ZnO, thermally post treated in a forming gas environment are investigated by temperature dependent continuous wave and time-resolved photoluminescence (PL) measurements. Several ... -
Fabrication and characterization of Al/Cu2ZnSnS4/n-Si/Al heterojunction photodiodes
Turgut, Güven; Keşkenler, Eyüp Fahri; Aydın, Serdar; Doğan, Seydi; Duman, Songül; Özçelik, Şeyma; Gürbulak, Bekir; Esen, Bayram (Wıley-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 ... -
Fotovoltaik devre modeli geliştirilmesi ve sistemin kontrolü
Öztürk, Onur (Balıkesir Üniversitesi Fen Bilimleri Enstitüsü, 2020)Bu tezde, laboratuvar ortamında da kullanılabilecek güneş panellerinin davranışlarını gösterecek bir deneysel model çalışması gerçekleştirlmiştir. Bu çalışma kapsamında, 4 adet deney modülü prototipi tasarlanarak bunların ... -
GaN/AlGaN back-illuminated multiple-quantum-well Schottky barrier ultraviolet photodetectors
Teke, Ali; Doğan, Seydi; Yun, F; Reshchikov, M. A.; Le, H; Liu, XQ; Morkoc, H; Wang, WB) (Pergamon-Elsevier Science Ltd, 2003)We report on characterization and operation principle of a set of GaN/AlGaN multiple-quantum-well (MQW) photovoltaic detectors. The structures were grown by molecular beam epitaxy (MBE) on c-plane sapphire substrates and ... -
III-V nitrides and silicon carbide as optoelectronic materials
Doğan, Seydi; Teke, Ali; Morkoç, Hadis D. (CRC Press, 2006)SiC has emerged as the leading candidate for high temperature and high power device applications due in part to the commercial availability of high quality SiC substrates of ever increasing diameter and quality. These ... -
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 ...
