He is the manager of the High Efficiency Crystalline Photovoltaics Group at the National Renewable Energy Laboratory (NREL). His interests at NREL have been in the development of next-generation multi-junction high-efficiency solar cells for concentrator systems and the transfer of this technology to industry. One of his early focuses after joining the group was to adapt the GaInP/GaAs multi-junction cell technology for concentrator operation, developing the first monolithic two-terminal solar cell to have a verified efficiency with more than 30%. More recently, he has studied novel semiconductor materials for photovoltaics, such as GaInNAs for potential application in a 1-eV-bandgap device on conventional GaAs or Ge substrates, as well as developing concepts for junctions suitable for fabrication on Si. His current work centers on development of future generations of lattice-mismatched multi-junction cell structures for ultrahigh-efficiency operation under concentration. He received his bachelor’s in physics from Princeton University and his doctorate in applied physics from Stanford University. He joined NREL in 1990.
She is a materials engineer for the National Renewable Energy Laboratory in charge of determining new fluid formulations (molten salts, liquid metals, supercritical) for thermal applications. She is researching in corrosion mitigation to control degradation at high temperature under extreme conditions (mechanical, chemical, and thermal). She has become a material’s expert in solar thermal applications. She successfully managed complex, multimillion dollar projects, including coordinating multiple partners and professional scientists and engineers. Her understanding of the interaction of materials with the surrounding environment is key for selecting the appropriate materials used in thermal energy storage and heat transfer fluid systems. She has a patent, multiple publications in molten-salt utilization and characterization with applications as sensible heat fluid and phase-change materials, and other publications on corrosion evaluation of ceramics, alloys and surface treatments for high-temperature applications in harsh environments. She earned a bachelor’s and master’s in materials engineering from Simon Bolivar University and a doctorate from Colorado School of Mines in metallurgical and materials engineering. She also holds a research assistant professor appointment in the Metallurgical & Materials Engineering Department at the Colorado School of Mines. She has accumulated over 25 years of experience in materials science and engineering.
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