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Center for Astrophysics Research and Technologies Seminar Series Information

 

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Thermophotovoltaic power generation from solar and waste heat

Wednesday September 6, 2017
11:00 am


 Presenter:  Dr. Peter Bermel, Purdue University
 Series:  OSE Seminars
 Abstract:  Thermophotovoltaics (TPV) generate electricity through a unique mechanism: harvesting thermal radiation with a photovoltaic cell. The input heat can be generated through a number of sources, including concentrated solar heating and waste heat. In principle, its heat-to-electricity efficiency can approach 85% at sufficiently high temperatures. Although the very first TPV devices had low performance, significant progress has recently been made by researchers worldwide in closing this gap. In these studies, several key themes have emerged, namely: efficiently harvesting high-temperature heat to power these devices; selectively radiating this heat to minimize wasted photons; and fabricating efficient, temperature-controlled photovoltaic cells with moderate bandgaps to generate maximal power. In this talk, we will review the limits of TPV in selected sustainable energy harvesting applications, the role of losses at various stages, and the potential of photonics and advanced semiconductor growth processes to help overcome these key challenges.
 Location:  Room 101, Center for High Tech Materials

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