Environmental Engineering Reference
In-Depth Information
Table 11.1 Three groups of open circuit
voltagesobservedforGaAs-basedsolarcells
Open Circuit Voltage
Device Type
Groups Observed (mV)
±
A
860
20
±
B
1025
20
±
C
1160
15
Figure 11.2
A graphical presentation of the three sets of
V
oc
groups
observed for GaAs-based solar cells.
11.4 Discussion of New Observations
The effects of defects on solar cell characteristics as discussed in
chapter9showhowdefectlevelsaffectGaAs-basedsolarcells.More
comprehensive experimental work or re-examination of already
published work may reveal other possible Fermi-level pinning
positions for GaAs-based solar cells. However, the results already
observed show that the behaviour of GaAs-based solar cells is very
