Tezin Türü: Yüksek Lisans
Tezin Yürütüldüğü Kurum: Niğde Ömer Halisdemir Üniversitesi, Fen Bilimleri Enstitüsü, Türkiye
Tezin Onay Tarihi: 2019
Tezin Dili: Türkçe
Öğrenci: ALİ ALTUNTEPE
Asıl Danışman (Eş Danışmanlı Tezler İçin): Selahattin Çelik
Eş Danışman: Recep Zan
Özet:
Graphene, a single sheet of graphite and it has high conductivity, high durability and high transparency but that has some handicaps such as high sheet resistance. Doping can be overcome this issue so, in situ doping was performed using nitrogen sources like ammonia and pyridin. Based on the conducted experiments that nitrogen doped graphene was successfully synthesized and this was confirmed by Raman spectroscopy, EDS and XPS analysis. n-type and p-type doping of the graphene layer was found to be much more successful in terms of nitrogen amount in the sheet by using pyridine that was used both carbon and nitrogen source in comparison to the doping with only ammonia. However, nitrogen-doped single layer graphene was only successfully synthesized using pyridine along with small amount of methane. It was found that the sheet resistance of the graphene film was decreased with the doping in comparison to the pristine graphene. Reducing the sheet resistance is a quiet important development for the graphene to be employed in the optoelectronic devices, in particular in solar cells.