Environmental Engineering Reference
In-Depth Information
Figure 4.10
The energy band diagrams of the previous concept and the
new concept for description and comparison of experimental results.
4.5.1
Current-Voltage (I-V) Characteristics
When sunlight enters through the glass/CG side, the photo-
generated charge carriers are created within the semiconducting
layers,separatedbytheinternalelectricfield,andcollectedtocreate
an electric current in the external circuit. In both models, electrons
flow towards the conducting glass and holes flow towards the back
