What is limit to electrone-hole gas density?

[Stanley514]

What is maximal possible density of stable electron-hole gas/liquid in metals or solid bodies? Let's assume that electrons and holes are not suppose to recombine and are in thermodynamic equilibrium. Room temperature is assumed. Is it possible to achieve electron-hole gas density many times dense that that of copper or common metals? What will limit such density?

 

[Bill_K]

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