Yoon Research Group (ECE, University of Utah)
As part of our CTAC project, we participated in the US-MAC Workshop (Manufacturing of Advanced Cadmium Telluride). This is the 7th Annual Cadmium Telluride Solar Cells. We sincerely thank our collaborators, Dr. Chungho Lee and Dr. Gang Xiong at First Solar (link).
Welcome back to school- This year, we have a freshman (Judy Ojewia) in our group via the Engineering Scholar Program. Welcome, Judy!
Anika and successfully completed their MATLAB program for a photovoltaic (PV) project. They developed a code that automatically extracts key solar cell parameters, such as short-circuit current, open-circuit voltage, fill factor, and efficiency. We express our gratitude for their exceptional work with us.
Yoon Research Group gave two talks at the 65th EMC (Electronic Materials Conference; Santa Barbara, CA; link).
(1) “Photovoltaic Characteristics of PERC-Like CdTe Solar Cells” by E. Roy, K. Powell and H. Yoon.
(2) “Monitoring Stability of Metal-Halide Perovskites Under Combined Stressors of Ion-Beam and Heat” by A. Chowdhury, Y. Hsu, and H. Yoon.
Ashif gave an excellent presentation on his work on perovskite solar cells. He has investigated new technologies to measure the changes in the deterioration of meta-halide perovskites under environmental stressors.
We presented two research works at the PVSC (IEEE 50th Photovoltaic Specialists Conference).
(1) “Impact of Surface Roughness in Measuring Optoelectronic Characteristics of Thin-Film Solar Cells” by D. Magginetti, S. Jeon, Y. Yoon, A. Choudhury, A. Mamun, Y. Qian, J. Gerton, and H. Yoon (IEEE link)
(2) “Design and Fabrication of PERC-Like CdTe Solar Cells Using Micropatterned Al2O3 Layer” by E. Roy, K. Powell, C. Lee, G. Xiong, and H. Yoon (IEEE link)
We welcome two SRI (Summer Research Intern) students, Ankia Mukherjee (Hillcrest High School, Junior) and Hayden Gardner (Jordan High School, Senior). We thank the College of Engineering at the University of Utah for organizing this program. Two students will work on programming on PV projects from June 12 to August 4.
We congratulate Aaron Coon (B.S.) and Josh Miraglia (M.S.) for earning their degrees. These two members performed excellent research work in Yoon’s group. While Josh is considering graduate school, Aaron has decided to work with Texas Instrument. We sincerely wish them the next step in their career path. Congratulations!!
Yoon Research group hosted K-12 students In Utah to discuss their ideas about solar technologies. Wow, they had many clever ideas! In addition to the PV discussion, the graduate students in Yoon’s group gave a demo on how to measure solar cell performance using a solar simulator. It was a fun time.
Dr. Yoon gave an invited talk at the MRS (Materials Research Society) Spring meeting. The title of her talk was “Fabrication of Characterization of PERC-Like CdTe Solar Cells” (link).
Our perovskite research in collaboration with U. Toledo (Prof. Yan’s group) and Los Alamos National Lab (Drs. A. Jones and M. Pettes) has been published in the Journal of Physical Chemistry-C.
https://pubs.acs.org/doi/full/10.1021/acs.jpcc.2c09122#
Focused ion beam techniques have been frequently used to section metal-halide perovskites for microstructural investigations. However, the ion beams directly irradiating the sample surface may alter its properties far different from those of pristine, potentially leading to modified deterioration mechanisms under aging stressors. Read more