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(Band Diagram of AlGaAs)
The electronic properties of the ternary-compound semiconductor, AlGaAs,
depend on the alloy composition. This applet shows a single information
in three different ways:
In the top diagram, the minimum energies of the conduction band valleys,
the Gamma-, L- and X-point valleys, are plotted as a function of the Al
composition. The reference energy is the top of the valence band, i.e.,
E = Ev = 0 eV.
The lower-left diagram shows the E-K diagram
(Energy - K vector diagram). It shows the three important
conduction band valleys (Gamma, L, and X valleys) and the light-hole (lh)
and heavy-hole (hh) bands in the K-space (reciprocal space).
The lower-right diagram shows the conventional (simplified) energy band
diagram of the semiconductor.