News and Updates
- September 23rd, 2022 - Our recent work investigating the temperature dependence of pervoskite solar cells and the correlation between radiative recombination and carrier extraction now published in ACS Applied Materials & Interfaces.
- September 13th, 2022 - Another new paper from Kyle Dorman desribing the issues with "hot carrier extraction in intervalley PV devices" published online in ACS Applied Energy Materials.
- July 28th, 2022 - New paper from Kyle Dorman investigating the role of an electric field on hot carriers and valley photovoltaics now available via early access in the Journal of Photovoltaics
- July 2nd, 2022 - New collaborative paper with the Bristow-group at West Virginia University investigating the carrier dynamics in type-II quantum wells published in Physical Review Applied
- April 11th, 2022 - New work published in Joule with our friends at NREL, UNT, and around the space PV community on protocols for space testing of perovskite solar cells
- April 4th, 2022 - New article published in Journal of Photonics for Energy describing Pathways to the Hot Carrier Solar Cell.
- September 15th, 2021 - Shashi Sourabh's new paper on hot carrier dynamics in metal halide pervoskites now published online in Physical Review Materials
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, and has resulted the recent development of valley photovoltaic approaches in collaboration with Professor(s) Ferry and Stephen Goodnick at Arizona State University. We have also have a strong partnership with NREL to investigate carrier dynamics in perovskite materials and the stability of pervoskite solar cells.
We also have a long running 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 the University of North Texas, Swift Solar and NREL to investigate metal halide perovskite
solar cells for space power applications, with a specific emphasis on
CubeSat and SmallSat technologies for outer planetary missions.
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)