flat band potential (at a semiconductor/solution interphase)

https://doi.org/10.1351/goldbook.F02421
If effects of
surface states
are negligible, Δφsc, the potential drop associated with the space charge in the
semiconductor
, vanishes as the charge on the
semiconductor
becomes zero. The potential of the
semiconductor
corresponding to this condition is the flat band potential, which plays the same role as the potential of zero charge for metals.
Source:
PAC, 1986, 58, 437. (Interphases in systems of conducting phases (Recommendations 1985)) on page 444 [Terms] [Paper]