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. Author manuscript; available in PMC: 2016 Jul 7.
Published in final edited form as: J Mater Chem B. 2015 Apr 13;3(25):4965–4978. doi: 10.1039/C5TB00108K

Figure 2.

Figure 2

Simplified representation of relative electron energy levels. (a) Relative orbital electron energy levels as represented by Atomic Orbital Theory (e.g. C). (b) Relative orbital electron energy levels as represented by Band Theory. (c) Dopants alter the Photoelectric Work Function (ψ) for pdopants (left) and n-dopants (center). Dopant level can also alter the wok function (ψ > ψ′) and shift the rate of photoelectric excitation in a material (right).