From left to right: Dr. James Sites, Dr. John Raguse, Dr. Jennifer Drayton, Tao Song, Andrew Moore, Ramesh Pandey, Dr. Katherine Zaunbrecher, Kahl Counts, Alex Huss, Anna Wojtowicz
Colorado State University Photovoltaics Personnel:
Dr. James Sites studies the device physics of low-cost polycrystalline thin-film solar cells. His photovoltaics lab makes precision electrical and optical measurements on solar cells fabricated by several partners in the U.S. and abroad. The goals are to separate the various solar-cell losses, to explain the losses on a fundamental basis, and to suggest strategies for improved solar-cell performance. Prof. Sites has an increasing leadership role in the thin-film solar-cell community. He has published 160 papers; 42 of his students have completed their M.S. degree and 26 their Ph.D. He is co-author of the chapter on CdTe in the Handbook of Photovoltaic Science and Engineering.
Website Curriculum Vitae
Dr. Walajabad Sampath: Spearheading the CdTe effort in the Engineering department, the Materials Science Laboratory lead by Dr. Sampath is responsible for the deposition of the majority of the CdTe investigated at CSU.
Dr. Marko Topić: Hailing from the University of Ljubljana in Slovenia, Dr. Topic; has been an invaluable influence in operations at CSU, most notably for his recent efforts with Electroluminescence and the mapping of solar resources.
Dr. Jennifer Drayton: Jennifer received her Bachelors of Science degree in physics in 1999, Masters of Science in physics in 2004, and Doctor of Philosophy in physics with a concentration in materials science in 2005 all from the University of Toledo in Toledo, Ohio. After a 1-year postdoctoral position also at the University of Toledo, she worked as an industrial physicist at PrimeStar Solar in the research and development of CdTe solar panels for utility scale applications. Jen also worked in the Chemistry department at the University of Wyoming for >1 year. While at the University of Wyoming, she worked to develop a class on solar energy for the School of Energy Resources. She also worked with CZTS solar absorber layers and atomic layer deposition of oxide films. Jen has experience in several vacuum and non-vacuum types of thin film deposition as well as materials and electrical characterization of thin films, solar cells, and modules.
Katherine Zaunbrecher: Katherine received her B.S. from the University of Louisiana at Lafayette. She began working in the PV lab at CSU in 2009. She recently received her Ph.D. with her thesis on characterizing thin film solar cells using imaging techniques such as electroluminescence, photoluminescence, and lock-in thermography at the National Renewable Energy Laboratory. She is currently working a post-doc. with the same group. Her professional and life interests include outreach, physics education research, renewable energy, and being outside.
John Raguse: John earned his Ph.D. in 2015 with his dissertation titled "Electroluminescence of thin film CdTe devices and modules". He is continuing his work in thin-film photovoltaics here at CSU after spending three months at Loughborough, UK in a post-doctoral position.
Russell Geisthardt: Russell received a B.A. in physics from Lawrence University in Appleton, WI, in 2008. He joined the CSU PV lab in 2009, and received his M.S. degree in 2011. He received his PhD in the summer of 2014 with his thesis on whole-device characterization, efficiency loss and limit analysis, and uniformity characterization using light-beam-induced current measurements. Russell now works as a metrologist for Keysight Technologies in Santa Rosa CA, and is the proud father of two beautiful twin babies.
Tao Song: Tao Song is a graduate student in the Department of Physics at Colorado State University. He joined the Photovoltaic Lab in September 2011 after he finished his B.S. in optical science and technology at Beijing Jiaotong University, China. In Fall 2013, he just obtained his M.S. degree with his thesis "Distortions to Current-Voltage Curves of CIGS cells with Sputtered Zn(O,S) Buffer Layers". His research interests include the device characterization and modelling of thin-film solar cells. Now he is involved in the NREL single crystal CdTe project with a focus on simulations.
Andrew Moore: Born and raised in Indiana, he acquired a B.S. in physics from Ball State University in 2011, while also studying computer science and astronomy. Throughout his undergrad years, he became interested in renewable energy and sustainability, which lead to research in photovoltaics. He will complete the CSU masters program in early 2014 and continue research as a Ph.D. candidate. He also enjoy climbing, biking, hiking, craft beer, good food, disc golf, and travelling.
Kahl Counts: From Chautauqua County, NY, Kahl received his B.S. in Physics form SUNY Fredonia in 2014. He started with the group in summer 2014 where he assisted with characterization of CdTe solar cells in the CMT electron reflector project. Currently he is working with CIGS cells on a comparative analysis project involving several national labs and industrial partners that looks at current methods of producing CIGS cells.
Alex Huss: Alex received her BA from Hamilton College in Clinton, NY in 2014. She joined the CSU PV lab in 2015, and has been working on the characterization of CdTe thin films. In the spring of 2016 she completed her Master's degree, and is continuing on as a PhD candidate. In her spare time she enjoys spending time outdoors running, hiking, skiing and biking.
Ramesh Pandey: Ramesh hails from Kathmandu, Nepal where he compled his undergraduate degree. He has been in the lab since September 2015, recently received his M.S. and is hard at work on characterization of CdTe devices.
Anna Wojtowicz: Originally from Canada, Anna completed her B.S. Applied Physics in 2013 at Sonoma State University (SSU) in northern California. After graduating from SSU, Anna worked as a Research Associate at Oak Ridge National Laboratory (ORNL) developing software for coupling multiphysics nuclear reactor simulations. During her time at SSU, Anna had the opportunity to research organic charge-transfer salts; this led to an interest in thin-film semiconductors, applications to industry, and her joining the photovoltaics group in 2016. Outside of CSU, Anna enjoys gardening, playing board games and riding her bike.