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Recent Submissions

Development of a selective wet-chemical etchant for precise 3D sculpting of silicon enabled by infrared non-linear laser modification Zolfaghari Borra, Mona; Radfar, Behrad; Nasser, Hisham; Çolakoğlu, Tahir; Tokel, Onur; Turnalı, Ahmet; Işık Taşgın, Dilek; Toffoli, Hande; Toffoli, Daniele; İlday, Fatih Ömer; Turan, Raşit; Pavlov, Ihor; Bek, Alpan (2024-09-01) Recently-demonstrated high-quality three-dimensional (3D) subsurface laser processing inside crystalline silicon (c-Si) wafers opens a door to a wide range of novel applications in multidisciplinary research areas. Using t...
Influence of boron doping profile on emitter and metal contact recombination for n-PERT silicon solar cells Bektaş, Gence; Aslan, Sercan; Keçeci, Ahmet Emin; Özyahni, Vahdet; Canar, Hasan Hüseyin; Asav, Hasan; Seyrek, Selin; Verlinden, Pierre J.; Turan, Raşit (2024-08-01) Increasing interest in n-type silicon (Si) solar cells due to the high-quality material properties of the n-Si wafers, their relatively low sensitivity to donor-like impurities like iron and their resistance to light-induc...
Thermoluminescence dose response and kinetic parameters of Gd-doped ZnO nanoparticles Isik, M.; Yildirim, T.; Guner, M.; Hasanlı, Nızamı (2024-07-01) This study investigates the thermoluminescence (TL) properties of undoped and gadolinium (Gd)-doped zinc oxide (ZnO) nanoparticles synthesized via sol-gel method. The crystal structure of both synthesized nanoparticles was...
Annealing-free, electron-selective ohmic contacts using zirconium oxide and aluminum for n-type crystalline silicon solar cells Madbouly, Loay Akmal; Nasser, Hisham; Borra, Mona Zolfaghari; Çiftpınar, Emine Hande; Altiner, Gokhan; Aliefendioglu, Atescan; Canar, Hasan Huseyin; Turan, Raşit; Ünalan, Hüsnü Emrah (2024-06-15) The challenge of Fermi-level pinning significantly complicates the establishment of Ohmic, low-resistance contacts for lightly doped n-type crystalline silicon (c-Si), a critical requirement for economically feasible devic...
Possible pre-supernova binary companion to the progenitor of the supernova remnant IC 443 Dinçel, Baha; Uzuner, Mete; Neuhäuser, Ralph; Pannicke, Anna; Yerli, Sinan Kaan; Ankay, Aşkin; Mugrauer, Markus; Torres, Guillermo (2024-06-09)
The expected potential of hadronic PeVatron searches with spectral γ-ray data from the Southern Wide-field Gamma-ray Observatory Angüner, Ekrem Oğuzhan; Ergin, Tülün (2024-06-01) The presence of a spectral softening, occurring at ∼3 PeV energies, seen in the local cosmic-ray energy spectrum provides an evidence that our Galaxy hosts astrophysical objects, known as ’hadronic PeVatrons’, that are cap...
Investigating Potential Dark Sky Parks in Balkans Kurt, Zühal; Aksaker, Nazim; Yerli, Sinan Kaan; Erdoğan, Mehmet Akif (2024-06-01)
QCD sum rule study of JP = 1± exotic states with two heavy quarks in the molecular picture Alıyev, Tahmasıb; Bilmiş, Selçuk; Savcı, M. (2024-06-01) In this study, the spectroscopic parameters of exotic molecular states composed of mesons containing two heavy quarks (scalar - axial and pseudoscalar - axial meson combinations) are investigated within the QCD sum rules. ...
Performance analysis of CuSbSe2 thin-film solar cells with Cd-free window layers SÜRÜCÜ, GÖKHAN; Bal, Ersin; Gencer, Aysenur; Parlak, Mehmet; Surucu, Ozge (2024-05-15) This study investigates novel thin-film solar cells featuring CuSbSe2 (CASe) with ZnSnO and ZnMgO windows in the layer superstrate structure. For glass/ITO/ZnMgO/CASe/Cu + Au, the J-V measurements reveal a short-circuit cu...
Membrane paradigm approach to the Johannsen-Psaltis black hole Ağca, Çağdaş Ulus; Tekin, Bayram (2024-05-15) The Johannsen-Psaltis black hole is a phenomenologically viable metric obtained by judiciously deforming the Kerr black hole such that the metric is asymptotically flat and causal and is consistent with the weak field, pos...
Coupling Constants as Conserved Charges in Black Hole Thermodynamics Hajian, Kamal; Tekin, Bayram (2024-05-10) In a generic theory of gravity coupled to matter fields, the Smarr formula for black holes does not work properly if the contributions of the coupling constants defining the theory are not incorporated. However, these coup...
Scaling symmetry, Smarr relation, and the extended first law in lower-dimensional Lovelock gravity Alkaç, Gökhan; Özen, Gökçen Deniz; Özşahin, Hikmet; Süer, Gün; Tek, Mustafa (2024-05-01) Recently, it was discovered that lower-dimensional versions of Lovelock gravity exist as scalar-tensor theories that are examples of Horndeski gravity. We study the thermodynamics of the static black hole solutions in thes...
Revealing photoluminescence and nonlinear optical absorption characteristics of PbMo0.75W0.25O4 single crystal for optical limiting applications Doğan, Anıl; Karatay, Ahmet; Isik, Mehmet; Yıldız, Elif; Hasanlı, Nızamı; Elmalı, Ayhan (2024-05-01) Nonlinear absorption properties of PbMo0.75W0.25O4 single crystal fabricated by the Czochralski method were studied. The band gap energy of the crystal was determined as 3.12 eV. Urbach energy which represents the defect s...
Searching for OB-type pre-supernova binary companions inside supernova remnants Dinçel, Baha; Uzuner, Mete; Neuhäuser, Ralph; Pannicke, Anna; Yerli, Sinan Kaan; Ankay, Aşkin; Mugrauer, Markus; Torres, Guillermo (2024-05-01) We searched for OB-runaway stars inside supernova remnants (SNRs) as a pre-supernova binary companion. As the majority of massive stars are found in close binary systems, a runaway star ejected by the orbital energy after ...
Insights into Reaction Mechanisms in Liquid Metals from Density Functional Theory: CH4 Pyrolysis in BiNiX (X = Cu, Al) Molten Metals as a Case Study Erbasan, Arda; Toffoli, Hande; Toffoli, Daniele; Gökalp, İskender; KARDAŞ, GÜLFEZA; Çelik, Gökhan (2024-04-22) Pyrolysis of methane using molten metal catalysts in bubble column reactors presents a cleaner and coking-free alternative for hydrogen production from natural gas due to its lack of direct CO2 emissions. Bubble column rea...
Regularized Weyl double copy Alkaç, Gökhan; Gümüş, Mehmet Kemal; Kaşlkçl, Oǧuzhan; Olpak, Mehmet Ali; Tek, Mustafa (2024-04-15) We propose a regularization procedure in the sourced Weyl double copy, a spinorial version of the classical double copy, such that it matches much more general results in the Kerr-Schild version. In the regularized Weyl do...
Temperature-dependent tuning of band gap of Fe3O4 nanoparticles for optoelectronic applications Delice, S.; Isik, M.; Hasanlı, Nızamı (2024-04-01) We have investigated structural, morphological and temperature dependent absorption characteristics of Fe3O4 nanoparticles. X-ray diffraction pattern exhibited six diffraction peaks belonging to the cubic phase structure w...
A theoretical study on quasifission and fusion–fission processes in heavy-ion collisions Kayaalp, A.; Ocal, S.E.; Yaprakli, B.; Arık, Mert; Yılmaz, Osman; Umar, A.S. (2024-04-01) The stochastic mean-field (SMF) technique beyond the time-dependent-Hartree-Fock approach is used to explore the primary mass yields of quasifission fragments in the 58Fe+208Pb reaction at the bombarding energy Ec.m. = 238...
The SND@LHC experiment at CERN Güler, Ali Murat (2024-03-22) SND@LHC is proposed to exploit the high flux of energetic neutrinos of all flavours from the LHC in a hitherto unexplored pseudo-rapidity region of 7.2 < η < 8.4, complementary to all the other experiments at the LHC. The ...
NA65(DsTau): study of tau neutrino production in p-A interactions Güler, Ali Murat (2024-03-22) The DsTau (NA65) experiment at CERN was proposed to measure an inclusive differential cross-section of Ds production in p-A interactions. As this process is a main source of tau neutrino production, its study is necessary ...

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