Dr. Rusiri Rathnasekara
Assistant Professor
Physics and Engineering Science, Department of Computing, Mathematics, and Physics
Education
B.S., University of Sri JayewardenepuraPh.D., University of Tulsa
Biography
Dr. Rusiri Rathnasekara is a dedicated and dynamic physicist specializing in condensed matter physics, with over eight years of experience in nanomaterials processing, solar cell fabrication, and advanced spectroscopy. She has a proven ability to address complex scientific challenges and has established a strong record of research publications. Since 2023, Dr. Rathnasekara has been serving at Southern Nazarene University (SNU), where she is committed to inspiring students through innovative teaching methods while advancing impactful research in condensed matter physics. Outside of her academic pursuits, she enjoys traveling and painting.Publications/Journals
• Rathnasekara R., Mayberry G., Hari P.; “Deep level transient spectroscopy studies on four different Zinc Oxide morphologies”; Crystals 14, 224; Feb 2024• Kumar V., Kaphle A., Rathnasekara R., Neupane G. R., Hari P. “Role of Al doping in morphology and interface of Al-doped ZnO/CuO film for device performance of thin film-based heterojunction solar cells”; Hybrid Advances, 100148; Feb 2024
• Rathnasekara R., Mayberry G., Hari P.; “Thermoelectric, Electrochemical, and Dielectric Properties of Four ZnO Nanostructures”; Journal of Materials 15(24), p1-19 (8816); Dec 2022
• Rathnasekara R., Hari P.; “Enhancing the Efficiency of Dye-Sensitized Solar Cells (DSSCs) by Nanostructured Ag-doped ZnO Electrodes”; Journal of Chemistry Select 7, p1-11 (e202200830); Aug 2022
• Rathnasekara R., Hari P.; “Impedance Spectroscopy of Nanostructured ZnO morphologies”; Journal of Materials Research vol 36, p1937–1947; Apr 2021
Oral Presentations
• Rathnasekara R., Hari P.; “Deep Level Transient Spectroscopy (DLTS) of Ag-doped ZnO nanorods synthesized by Chemical Bath Deposition method, Zurich Instruments Virtual Event”; DLTS User Meeting (Virtual), CHE; Jul 2022• Rathnasekara R., Hari P.; “Dye-Sensitized Solar Cells (DSSCs) Based on Nanostructured Ag-Doped ZnO Elec trodes”; TU Research Colloquium, University of Tulsa, OK, USA; Mar 2022
• Rathnasekara R., Neupane G.R., Hari P.; “Thermoelectric properties of four different ZnO nanostructures”; APS Mar Meeting (Virtual), Chicago; Mar 2022
• Rathnasekara R., Neupane G.R., Hari P.; “Electrochemical properties of Ag-doped ZnO nanorods synthesized by chemical bath deposition method”; APS Mar Meeting (Virtual); Mar 2021
• Rathnasekara R., Hari P.; “Impedance Spectroscopy of Nanostructured ZnO Morphologies, International Work shop on Impedance Spectroscopy (IWIS 2020)”; (Virtual); DEU; Dec 2020
• Rathnasekara R., Hari P.; “Dye-Sensitized Solar Cells (DSSCs) Based on Nanostructured ZnO Electrodes”; TU Research Colloquium, University of Tulsa, OK, USA; Mar 2018
Poster Presentations
• Dilbeck J. Royal I. Rathnasekara R.; “Synthesis and Characterization of ZnO Nanoparticles via a Microwave Assisted Method”; APS March Meeting, Anaheim, CA; Mar 2025• Rathnasekara R., Hari P., ”Deep Level Transient Spectroscopy (DLTS) of Silver-doped Zinc Oxide nanorods synthesized by Chemical Bath Deposition method”; OKPVRI Symposium, NSN, Broken Arrow; Apr 2023
• Rathnasekara R., Neupane G. R., Bamidele M., Kim D. Y., Hari P.; “Impedance Spectroscopy Analysis of a Perovskite Solar Cell Under Illumination and Different Temperature Conditions”; OKPVRI Symposium, OSU Tulsa; Apr 2022
• Rathnasekara R., Hari P.; “Comparison of Platinum (Pt) counter electrodes deposited by spin coating, dip coating, and electrochemical method for Dye-Sensitized solar cells (DSSCs)”; OKPVRI Symposium; OU, Norman; Apr 2021