Abstract
It is well known that any temperature increase negatively affects the performances of photovoltaic devices. In this presentation, the fundamental reasons for these temperature effects will be discussed. The similarities between the thermodynamic approach that looks at entropy and energy balance on one hand and the statistical approach that looks at the balance between carrier generation and recombination on the other hand will be illustrated. The different losses that limit the efficiency of solar cells will be examined and their impacts on the temperature coefficients of the cells will be assessed. As an example, the intrinsic temperature coefficient for a silicon PV cell will be derived and the additional phenomena that can affect it will be discussed.
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Brief Bio
Olivier Dupre is a Ph.D. student at the Centre for Energy and Thermal Sciences of Lyon (CETHIL, CNRS - INSA Lyon- University Lyon 1), Villeurbanne, France. He received two Master degrees (Engineering in Energy and Environment, Research in Energetics) from INSA de Lyon, France, in 2011. He is currently working at the University of New South Wales (UNSW, Sydney, Australia) on the physics of the temperature coefficients of photovoltaic cells.
