• Investigation of thermally evaporated high resistive B-doped amorphous selenium alloy films and metal contact studies 

  Oner, Cihan; Nguyen, Khai V.; Pak, Rahmi O.; Mohammad, A. Mannan; Mandal, Krishna C. (SPIE, 2015)

  Amorphous selenium (a-Se) alloy materials with arsenic, chlorine, boron, and lithium doping were synthesized for room temperature nuclear radiation detector applications using an optimized alloy composition for enhanced ...
• High-barrier Schottky contact on n-type 4H-SiC epitaxial layer and studies of defect levels by deep level transient spectroscopy (DLTS) 

  Nguyen, Khai V.; Pak, Rahmi O.; Oner, Cihan; Mohammad, A. Mannan; Mandal, Krishna C. (SPIE, 2015)

  High barrier Schottky contact has been fabricated on 50 μm n-type 4H-SiC epitaxial layers grown on 350 μm thick substrate 8° off-cut towards the [11̅20] direction. The 4H-SiC epitaxial wafer was diced into 10 x 10 mm2 ...
• Surface passivation and isochronal annealing studies on n-type 4H-SiC epitaxial layer 

  Mohammad, A. Mannan; Nguyen, Khai V.; Pak, Rahmi O.; Oner, Cihan (SPIE, 2015)

  Schottky barrier radiation detectors were fabricated on the Si-face of 50 μm thick detector grade n-type 4H-SiC epitaxial layers. The junction properties of the fabricated detectors were investigated by current-voltage ...
• Defect characterization of Cd0.9Zn0.1Te crystals using electron beam induced current (EBIC) imaging and thermally stimulated current (TSC) measurements 

  Pak, Rahmi O.; Nguyen, Khai V.; Oner, Cihan; Mohammad, A. Mannan; Mandal, Krishna C. (SPIE, 2015)

  Semi-insulating Cd0.9Zn0.1Te nuclear detector grade crystals were grown by a low temperature solution method from in-house zone refined (~7N) precursor materials. The processed crystals from the grown ingot were thoroughly ...
• Investigation of metal contacts on high-resistivity large-area amorphous selenium alloy films 

  Oner, Cihan; Nguyen, Khai V.; Pak, Rahmi O.; Chowdhury, Towhid A.; Mandal, Krishna C. (IEEE, 2015)

  Amorphous selenium (a-Se) alloy materials doped with lithium (Li), boron (B), arsenic (As), and chlorine (Cl), were synthesized for room temperature radiation detection applications using an optimized alloy composition for ...
• Investigation of 12 μm 4H-SiC epilayers for radiation detection and noise analysis of front-end readout electronics 

  Nguyen, Khai V.; Pak, Rahmi O.; Oner, Cihan; Zhao, Feng; Mandal, Krishna C. (IEEE, 2015)

  Schottky barrier radiation detectors were fabricated on 12 μm n-type 4H-SiC epitaxial layers grown on a 4° off-axis highly doped 4H-SiC substrate (0001). Schottky barrier junction properties were characterized through ...
• Characterization of Cd0.9Zn0.1Te single crystals for radiation detectors 

  Pak, Rahmi O.; Nguyen, Khai V.; Oner, Cihan; Chowdhury, Towhid A.; Mandal, Krishna C. (IEEE, 2015)

  Large volume single crystals of Cd 0.9 Zn 0.1 Te (CZT) have been grown by vertical Bridgman technique using in-house zone refined precursor materials (Cd, Zn, and Te). The grown semi-insulating CZT crystals have shown high ...
• Deep levels in n-type 4H-silicon carbide epitaxial layers investigated by deep-level transient spectroscopy and isochronal annealing studies 

  Mohammad, A. Mannan; Nguyen, Khai V.; Pak, Rahmi O.; Oner, Cihan; Mandal, Krishna C. (IEEE, 2016)

  Deep levels were investigated by the capacitance mode deep-level transient spectroscopy (C-DLTS) on 4H-SiC Schottky barrier diodes fabricated on 50 μm-thick n-type 4HSiC epitaxial layers. C-DLTS scans from 80 K to 800 K ...
• Improved radiation detectors on 4H-SiC epilayers by edge termination 

  Oner, Cihan; Chowdhury, Towhid A.; Pak, Rahmi O.; Mandal, Krishna C. (SPIE, 2016)

  We report the development of an edge termination by depositing thin Si3N4 passivating film on 4H-SiC epilayer based radiation detector. The edge termination method is shown to be very effective for improving both the ...
• Synthesis and characterization of amorphous selenium alloys radiation detectors 

  Chowdhury, Towhid A.; Oner, Cihan; Mandal, Krishna C. (IEEE, 2017)

  Synthesized amorphous selenium (a-Se) alloy materials have been characterized for room temperature high-energy nuclear radiation detectors and x-ray detection applications. The alloy composition has been optimized to ensure ...
• Deep level transient spectroscopy and pulse height measurements on high resolution n-type 4H-SiC epitaxial schottky barrier radiation detectors 

  Oner, Cihan; Chowdhury, Towhid A.; Santi, Enrico; Mandal, Krishna C. (IEEE, 2017)

  High resolution 20 μm n-type 4H-SiC epitaxial layer Schottky barrier radiation detectors were fabricated by depositing nickel (Ni) contacts using DC sputtering for both front- and backside. Current-Voltage (I-V) measurements ...
• Crystal growth and characterization of Cd0.9Zn 0.1Te for gamma-ray detectors: thermally stimulated current (TSC), electron beam induced current (EBIC), and pulse height spectroscopy (PHS) 

  Oner, Cihan; Chowdhury, Towhid A.; Mandal, Krishna C. (IEEE, 2017)

  Cd0.9Zn0.1Te (CZT) detector grade crystals were grown from in-house zone refined Cd, Zn, and Te (7N) precursor materials, using a low temperature tellurium solvent growth method. These crystals were grown using a high ...
• Design and response testing of Boron-Diffused silicon carbide neutron detectors for Dosimetry and Monitoring applications 

  Mandal, Krishna C.; Chowdhury, Towhid A.; Oner, Cihan; Ruddy, Frank H. (ASTM INTERNATIONAL, 2018-12-14)

  A high-sensitivity boron-diffused silicon carbide (4H-SiC) p-n diode has been designed and fabricated using vapor-phase epitaxy. Boron-10 (10B) is diffused into nitrogen-doped n- SiC, forming the p+ layer, and thermal ...
• Cadmium zinc telluride (czt) room temperature radiation detectors: an overview 

  Öner, Cihan (Eğitim Yayınevi, 2023-10)
• Design of a compact microstrip quadruplexer with closely spaced switchable and tunable channels based on asymmetrical dual-mode loop resonators 

  Görür, Ali Kürşad; Türkeli, Alper; Karpuz, Ceyhun; Görür, Adnan (2020-12-01)

  In this letter, a switchable microstrip quadruplexer based on asymmetrical dual-mode loop resonators (ADMLRs) is presented. Four ADMLRs at different electrical lengths for creating four channels are coupled to input/output ...
• A novel compact microstrip diplexer with closely spaced channels 

  Görür, Ali Kürşad; Türkeli, Alper; Doğan, Engin; Karpuz, Ceyhun; Görür, Adnan (2021-01-02)

  A novel microstrip diplexer with closely spaced channels is introduced by using stub loaded dual-mode square loop resonators (DMSLRs). The proposed resonator is constructed by locating open-circuited stubs with narrow slits ...
• A high isolation quad‐channel microstrip diplexer based on codirectional split ring resonators 

  Görür, Ali Kürşad; Türkeli, Alper; Büyüktuna, Mert; Doğan, Engin; Karpuz, Ceyhun; Görür, Adnan (2022-04-27)

  In this study, a novel microstrip diplexer with four channels is designed by using codirectional split ring resonators (CDSRRs). Since CDSRRs provide dual resonance behavior, dual-band bandpass filter with two poles at ...
• Design of a novel dual-wideband filtenna 

  Türkeli, Alper; Görür, Ali Kürşad; Altuncu, Yasemin (2022-07-18)

  In this paper, a novel microstrip-fed filter-antenna (filtenna) exhibiting dual-wideband response is introduced. In this direction, a dual-wideband bandpass filter is designed first and then it is integrated into the feed ...
• Katı hal güç kuvvetlendiricisinin LC-GFDM iletim sinyali üzerindeki etkisinin incelenmesi 

  Şimşir, Şakir; Taşpınar, Necmi (2022-10)

  Bu çalışmada, en yaygın kullanılan yüksek güç kuvvetlendiricileri arasında yer alan katı hal güç kuvvetlendiricisi (SSPA), düşük karmaşıklı-genelleştirilmiş frekans bölmeli çoğullama (LC-GFDM) vericisine uygulanmış olup, ...
• A novel selective mapping method based on cumulative symbol optimization for PAPR minimization in low complexity GFDM transmitter 

  Şimşir, Şakir; Taşpınar, Necmi (2022-05)

  In this paper, the problem of high peak-to-average power ratio (PAPR) in the low complex version of the generalized frequency division multiplexing (LC-GFDM) is handled by developing a novel PAPR reduction method called ...

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