Radiation thermodynamics limits to solar cell efficiency

27 02 2014

On the thermodynamics of light trapping in solar cells

Uwe Rau, Thomas Kirchartz, Nature Materials 13, 103–104 (2014)

In this paper, Rau and Kirchartz establish “the equation that leads to physically correct and meaningful results in all situations and should be considered for future optimizations of light management in solar cells.”

nmat3837-m2

q, elementary charge; Eg, band gap energy; k, Boltzmann’s constant; T , temperature of the cell ; bb:blackbody.

It is not no easy to see the meaning of the terms just at first sight if you are not familiar with it, but the important point is that it works correctly when you come to apply it…

 

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