Browsing by Author "Ornek, Osman"
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Fe doped TiO2 thin film as electron selective layer for inverted solar cells
Kosemen, Arif; Kosemen, Zuhal Alpaslan; Canimkubey, Betul; Erkovan, Mustafa; Basarir, Fevzihan; San, Sait Eren; Ornek, Osman (PERGAMON-ELSEVIER SCIENCE LTD, 2016)Inverted P3HT:PCBM based organic solar cells were fabricated by using Fe2+ doped TiO2 films as electron selective layer. Pure and Fe2+ doped TiO2 films were prepared by sol gel method and the optical as well as the structural ... -
Investigations of structural, electronic, mechanical and lattice dynamic properties of TiRu3 and TiOs3 compounds
Ornek, Osman (ELSEVIER SCIENCE BV, 2019)Ab initio calculations of structural, electronic, elastic, and phonon properties of TiRu3 and TiOs3 compounds have been studied using the density functional theory (DFT) within the generalized gradient approximation (GGA). ... -
Mechanical and dynamical properties of Co3Al and Co3Ta alloys in L1(2) phase
Ornek, Osman; Iyigor, Ahmet; Arikan, Nihat (GAZI UNIV, FAC ENGINEERING ARCHITECTURE, 2017)The structural, elastic, electronic and vibrational properties of Co3Al and Co3Ta alloys with density functional theory have been investigated. The lattice constants, bulk modulus and its pressure derivative are evaluated ... -
Performance enhancement of inverted type organic solar cells by using Eu doped TiO2 thin film
Ornek, Osman; Kosemen, Zuhal Alpaslan; Ozturk, Sadullah; Canimkubey, Betul; Findik, Saban; Erkovan, Mustafa; Kosemen, Arif (ELSEVIER, 2017)In the present work, europium (Eu) has been used as a dopant element in titanium dioxide (TiO2) crystal structure to enhance the photovoltaic performance of the inverted type organic solar cells fabricated with TiO2 thin ... -
Structural, electronic, elastic, thermodynamic and phonon properties of LaX (X = Cd, Hg and Zn) compounds in the B2 phase
Ornek, Osman; Arikan, Nihat (WORLD SCIENTIFIC PUBL CO PTE LTD, 2016)The ab initio computations have been performed to examine the structural, elastic, electronic and phonon properties of cubic LaX (X = Cd, Hg and Zn) compounds in the B2 phase. The optimized lattice constants, bulk modulus, ...