Topic 3-PV Systems

Question 1

What is the average solar power density incident on the Earth’s surface?

Answer 1

1 kWm-2

Question 2

a. Match the following band gaps to the following semiconductors:
Ge, InAs, GaAs, CdTe, GaInP, Si,

Answer 2

Ge – 0.66 eV, InAs – 0.35 eV, GaAs – 1.4 eV, CdTe – 1.5 eV, GaInP – 1.9 eV, Si – 1.1

Question 3

Name two considerations when deciding which materials to use in a multi-junction solar cell

Answer 3

The main 2 considerations are current matching and lattice matching.