21.4 Bipolar Diodes
575
Fig. 21.61 Schematic
sample geometry and
charge distribution (left)
and energy diagram (right)
for a an ideal insulator, b a
typical inorganic
semiconductor pn diode
and c a double layer
organic diode under
forward bias V. Adapted
from [1787]
Fig. 21.62 Schematic
energy diagram for a dual
layer organic diode (HTL,
ETL), b with additional
emission layer (EML) and
c with further hole and
electron injection layers
(HIL, EIL)