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I am reading this page about electron energy concept terminology.

I am trying to apply that for the pn junction in equilibrium below.

Could anyone help me to see if I get it correctly?

C = Electric potential = built-in potential

B = Internal chemical potential of electrons = 0

(because Fermi level is constant through the junction)

A = Total chemical potential of electrons = B + C = built-in potential

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emnha
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1 Answers1

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You said "Fermi level is constant throughout the junction" - that's correct. But fermi level is "A" (see top right in the table). So A is constant (you can set it to zero if you like). B is not constant.

Steve Byrnes
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