# why the mass action law is not valid for very low temperatures??

by Ger3
Tags: action, band energy gap, low temperature, mass, quantum atom theory, semiconductor, statistical mechanic, valid
 P: 2 Hi, In the context of semiconductors, I was asked why the mass action law is not valid for very low temperatures. I thought that it was valid, since for very low temperature it holds the non-degeneracy condition $$E_g >> k_B T$$ (I think so...). But maybe for some other reason it breaks. Does someone know why??? Thanks!
 P: 124 I am not sure, but perhaps it is related to the behavior of electrons in the lattice, which becomes more prominent at lower temperatures (or low energies)?

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