Question

How large can a fermi level get?

Answer 1

The Fermi level chemical potential for electrons (or electrochemical potential for electrons), usually denoted by µ or EF,[1] of a body is a thermodynamic quantity, whose significance is the thermodynamic workrequired to add one electron to the body (not counting the work required to remove the electron from wherever it came from). A precise understanding of the Fermi level—how it relates to electronic band structure in determining electronic properties, how it relates to the voltage and flow of charge in an electronic circuit—is essential to an understanding of solid-state physics.

Answer 2

Fermi level" is the term used to describe the top of the collection of electron energy ... ♦♦