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Robel Bekele
Robel Bekele
university research foundation, university of florida, vanderbilt university, us naval research
Verified email at nrl.navy.mil - Homepage
Title
Cited by
Cited by
Year
Cu (In, Ga) Se2 thin films and devices sputtered from a single target without additional selenization
JA Frantz, RY Bekele, VQ Nguyen, JS Sanghera, A Bruce, SV Frolov, ...
Thin Solid Films 519 (22), 7763-7765, 2011
1182011
Nanoimaging of open-circuit voltage in photovoltaic devices
EM Tennyson, JL Garrett, JA Frantz, JD Myers, RY Bekele, JS Sanghera, ...
Adv. Energy Mater 5 (23), 1501142, 2015
972015
Organic photovoltaic cells with vertically aligned crystalline molecular nanorods
Y Zheng, R Bekele, J Ouyang, J Xue
Organic Electronics 10 (8), 1621-1625, 2009
502009
Chip-based nonmechanical beam steerer in the midwave infrared
JA Frantz, JD Myers, RY Bekele, CM Spillmann, J Naciri, J Kolacz, ...
Journal of the Optical Society of America B 35 (12), C29-C37, 2018
372018
Reconfiguring structured light beams using nonlinear metasurfaces
Y Xu, J Sun, J Frantz, MI Shalaev, W Walasik, A Pandey, JD Myers, ...
Optics Express 26 (23), 30930-30943, 2018
342018
Quaternary Sputtered Cu(In,Ga)Se2 Absorbers for Photovoltaics: A Review
JA Frantz, JD Myers, RY Bekele, VQ Nguyen, BM Sadowski, ...
IEEE Journal of Photovoltaics 6 (4), 1036-1050, 2016
222016
Copper indium gallium selenide (CIGS) thin films with composition controlled by co-sputtering
JA Frantz, JS Sanghera, RY Bekele, VQ Nguyen, ID Aggarwal, AJ Bruce, ...
US Patent 8,894,826, 2014
22*2014
Photovoltage tomography in polycrystalline solar cells
EM Tennyson, JA Frantz, JM Howard, WB Gunnarsson, JD Myers, ...
ACS Energy Letters 1 (5), 899-905, 2016
172016
Non-mechanical beam steering in the mid-wave infrared
JA Frantz, JD Myers, RY Bekele, CM Spillmann, J Naciri, JS Kolacz, ...
Advanced Optics for Defense Applications: UV through LWIR II 10181, 206-212, 2017
152017
Arsenic selenide thin film degradation and its mitigation
JA Frantz, JD Myers, RY Bekele, CM Spillmann, J Kolacz, H Gotjen, ...
Optical Materials Express 8 (12), 3659-3665, 2018
122018
Nonlinear metasurface for structured light with tunable orbital angular momentum
Y Xu, J Sun, J Frantz, MI Shalaev, W Walasik, A Pandey, JD Myers, ...
Applied Sciences 9 (5), 958, 2019
112019
Apparatus for Containment of Molten Aluminum Using Non-Wetting Materials
JD Myers, JA Frantz, GR Villalobos, JS Sanghera, B Sadowski, RY Bekele
US Patent App. 15/782,785, 2018
112018
Refractive waveguide non-mechanical beam steering (NMBS) in the MWIR
JD Myers, JA Frantz, CM Spillmann, RY Bekele, J Kolacz, H Gotjen, ...
Photonic Instrumentation Engineering V 10539, 47-53, 2018
92018
Interdigitated bulk heterojunction organic photovoltaic cells with aligned copper phthalocyanine nanorods
Y Zheng, R Bekele, J Ouyang, J Xue
IEEE Journal of Selected Topics in Quantum Electronics 16 (6), 1544-1551, 2010
92010
Microstructured ZnO coatings combined with antireflective layers for light management in photovoltaic devices
JA Frantz, JD Myers, RY Bekele, LE Busse, JS Sanghera
Progress in Photovoltaics: Research and Applications 24 (11), 1427-1435, 2016
82016
Propagating transverse electric and transverse magnetic modes in liquid crystal-clad planar waveguides
J Kołacz, HG Gotjen, RY Bekele, JD Myers, JA Frantz, M Ziemkiewicz, ...
Liquid Crystals 47 (4), 531-539, 2020
72020
Structural and electronic characteristics of Cu(In,Ga)Se2thin films sputtered from quaternary targets
JA Frantz, RY Bekele, JD Myers, VQ Nguyen, JS Sanghera, ...
2012 38th IEEE Photovoltaic Specialists Conference, 003098-003101, 2012
72012
Optical constants of germanium antimony telluride (GST) in amorphous, crystalline, and intermediate states
JA Frantz, JD Myers, A Clabeau, RY Bekele, N Hong, MA Vincenti, ...
Optical Materials Express 13 (12), 3631-3640, 2023
62023
Development of thin film claddings for single crystal optical fiber
JD Myers, W Kim, LB Shaw, S Bayya, SN Qadri, D Rhonehouse, C Askins, ...
Novel Optical Materials and Applications, NoTu4D. 4, 2018
62018
Recent progress in sputtered Cu (In, Ga) Se2 absorbers for photovoltaics
JA Frantz, JD Myers, RY Bekele, VQ Nguyen, BM Sadowski, ...
Novel Optical Materials and Applications, NS3B. 2, 2015
52015
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