Welcome to the Photovoltaic Materials and Devices Group website at the University of Oklahoma!
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 intermediate band solar cells, multi-exciton generation, and hot carrier cells. Much of the focus of this work is on narrow-gap semiconductors such as epitaxial InAs, InSb, and InN along with colloidal PbS. 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.
As well as partnerships with industry, the group also collaborates strongly with the groups of Professor Santos (MBE growth), Professor Bumm (Dept. Physics), and Professor Wang (Dept. Chemical, Biological and Materials Engineering) at OU. In addition, we continue fruitful partnerships with groups at the University of Oxford, and University College London (U.K.), CRHEA-CNRS, France, as well as here in the United States with groups at the Naval Research Laboratory (Washington D.C.), SUNY-Buffalo, NY and the University of Tulsa, OK.
Thank you for visiting our website - enjoy!
Dr. Ian R. Sellers (Head of Group)
News and Updates
- June 2016 - The PV materials group at OU has recently partnered with colleagues at Oklahoma State University, Tulsa University, and Amethyst Research Inc. to form "The Oklahoma Photovoltaics Research Institute." This institute is focused on coordinating statewide efforts in PV research, education, and outreach and is built on the back of several successful collaborative grant proposals from the partners over the last few years. The aim of the OK-PV Institute to further promote and increase the visibility of PV research in Oklahoma both nationally and internationally.
- October 14th, 2016 - The U.S. government just made its biggest clean energy purchase ever.
- July 25th, 2016 - New grant: "Control and manipulation of thermal losses in quantum-engineered structures: a practical route to high efficiency hot carrier solar cells" funded by the National Science Foundation!
- June 16th, 2016 - New grant proposal: "High Efficiency Dilute Nitride Solar Cells for Space Applications" selected for funding by NASA!
February 26th, 2016 - "Suppression of phonon-mediated hot carrier relaxation in type-II of InAs/AlAsxSb1−x quantum wells: a practical route to hot carrier solar cells," has been published online, 26 February 2016, in Progress in Photovoltaics: Research and Applications (Vol. 24, Issue 5, May 2016, Pg. 591-599).
December 18, 2015 - "Investigation of InAs/GaAs1−xSbx quantum dots for applications in intermediate band solar cells," has been published online, 18 December 2015, in Solar Energy Materials and Solar Cells (Vol.147, April 2016, Pg.94-100).
Collaborators and Funding
- Solar Energy Materials Initiative, Department of Materials, University of Oxford, UK
- CRHEA-CNRS, France
- Petrou Group, SUNY-Buffalo, U.S.A
- Sharp Laboratories of Europe Ltd.
- Liu Group, University College London, U.K.