Browsing by Author "Öztürk, Abdullah"

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Fotokatalitik ve Süreksiz Fiberde Güçlendirilmiş Dental Kompozitlerin Geliştirilmesi
(2012) Park, Jongee; Şaşmazel, Hilal Türkoğlu; Öztürk, Abdullah; Bişkin, Erhan; 01. Atılım University
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Mekanik Bilyalı Öğütmeyle Yüksek Etkinlikte Fotokatalitik $tio_2$ Tozu ve Nano Boyutlu Titanya Sol Üretimi
(2012) Öztürk, Abdullah; Timuçin, Muharrem; Karakaş, Gürkan; Park, Jongee; 01. Atılım University
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Tio2 Films With Various Crystal Structures for Single and Bilayer Photoanodes of Dye-Sensitized Solar Cells
(2018) Erdoğan, Nursev; Park, Jongee; Öztürk, Abdullah; Metallurgical and Materials Engineering; 06. School Of Engineering; 01. Atılım University
Phase pure and composite TiO2 nanopowders exhibiting various crystal structures (anatase, rutile and brookite) are used asphotoanode in dye-sensitized solar cells. The nanopowders are deposited in paste form onto a conducting oxide glass usingdoctor blade method in single layer and bilayers. The highest solar efficiency achieved by the single layer photoanode composedof > 99 wt % anatase crystals was 2.86 %. The solar efficiency of 4.93 % has been harvested via bilayer photoanode built byapplying a layer consisting 55 wt % anatase and 45 wt % rutile phase nanoparticles on top of the layer composed of a mixtureof > 99 wt % anatase crystals. The improved photovoltaic performance is attributed to anatase dominated bottom layer whichfacilitates electron charge generation with high surface area and charge transport by proper crystal structure as well assynergistic effect of binary phase content of the photoanodes. The porous structure of top layer enhances diffusion of theI−/I3−electrolyte in the bilayer TiO2 photoanode.
Utilization of Robotics for Solar Panel Cleaning and Maintenance
(2019) Park, Haon; Öztürk, Abdullah; Park, Hajun; Khan, Muhammed Umer; Mechatronics Engineering; 15. Graduate School of Natural and Applied Sciences; 06. School Of Engineering; 01. Atılım University
In this study, a portable and low-cost solar panel cleaning robot with a functioning to blowaway dust was designed and built to incur labor costs.The robot is service effective, environmentallyfriendly, energy independent, self-automated, long durable, and cost-effective. After cleaning operation,output voltage and current in solar panel increased by 8.02% and 18.78%, respectively. Moreover, theimage processing with the photos taken by a camera fixed on the robot made classification according tocolor changes in the solar panel. Therefore, it can be concluded that the automated and multifunctionalrobot may facilitate the solar panel surface cleaning and be an applicable maintenance method throughremote monitoring of the surface conditions.