News and Updates
- September 15th, 2021 - Shashi Sourabh's new paper on hot carrier dynamics in metal halide pervoskites now published online in Physical Reveiw Materials
- September 14th, 2021 - Check out our newly published work in SOLMAT on GaAs1-xSbx solar cells as a candidate for high radiation environments
- August 24th, 2021- New program funded by the NSF to study Valley Photovoltaics!
- June 25th, 2021 - Congratulations to Graduate Research Student , Hadi Afshari for
being awarded best student presentation at the recent IEEE PVSC
48! This is well deserved recognition for Hadi's excellent work in
- June 22nd, 2021 - Another new manuscript! "Radiation Stability of mixed Tin-Lead Halide Perovskites for Space Applications" now published in Solar Energy Materials & Solar Cells.
- June 2nd, 2021 - New paper with UNT and Swift Solar on the Tolerance of Perovskite Solar Cells to Targeted Proton Irradaition now published in ACS Energy Letters.
- May 26th, 2021 - Our collaborative work with IPVF on hot carriers and phonon management in superlattice heterostructures is this week's featured article in Applied Physics Letters.
- May 18th, 2021 - New manuscipt on carrier dynamics in type-II heterostructures with colleagues at West Virginia University now published in Scientific Reports.
The main focus of our group is to investigate novel materials and structures for next generation photovoltaic cells. Our methodology is based upon investigating the fundamental properties of new materials and systems, through various forms of optical spectroscopy and to correlate this knowledge to the operation of solar cell devices. Through this process we aim to gain a full understanding of the promise of such new materials for high-efficiency photovoltaics, determined by the physical mechanisms driving or inhibiting their operation.
Current projects performed in the group involve investigations of low-dimensional systems for third-generation PV including: quantum dot solar cells, multi-exciton generation, and hot carrier effects. Much of the focus of this work is on narrow-gap semiconductors such as epitaxial InAs, Antimonides, and quaternary III-V materials. Recently, we have also partnered with NREL to investigate carrier dynamics in perovskite materials and the stability of pervoskite solar cells.
We also have a strong activity to investigate the
fundamental limitations of GaInNAs materials for multi-junction solar
cell applications. This work is performed in collaboration with
industrial partners at Amethyst
Research Inc. in Ardmore, OK. In addition, we collaborate
with MiaSole Hi-Tech. Corp.,
in Santa Clara, CA to investigate flexible CIGS
solar cells for space power applications, with a specific emphasis on
CubeSat and SmallSat technologies for outer planetary missions. Recently, we have also initiated a collaboration with Swift Solar to investigate the potential of pervoskite solar cells for space.
As well as partnerships with industry, the group also
collaborates strongly with the groups of Professor Santos
(MBE growth), Professor
Saparov (Dept. Chemistry and Biochemistry), Professor Garg (Dept. Aerospace & Mechanical Eng.), and Professor
(Dept. Chemical, Biological and Materials Engineering)
here at OU. We have fruitful partnerships with groups at University College London (U.K.),
CRHEA-CNRS and the Institute of Photovoltaics, both in France, as well as here in the United States with
the U.S. Naval Research Laboratory (Washington D.C.), National
Energy Laboratory (Golden, CO), Arizona State University, the University of North Texas, West Virginia
University, SUNY-Buffalo, and the University of Tulsa. The group is also an active partner in the Oklahoma Photovoltaics Research Insitute, a statewide center to promote solar educations and research in Oklahoma!
Thank you for visiting our website - enjoy!
Dr. Ian R. Sellers (Head of Group)