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mauvepug262Lv1
12 May 2020
Consider a p+-p-n solar cell with light shining on the p+ side. Choose from the 4
structures below the one that would make the best solar cell. For which range of wavelengths does
this solar cell produce photocurrent? Explain why the 3 other structures are not an optimal choice for
a solar cell.
a) Structure 1: p+, p and n regions made of Si
b) Structure 2: p+, p and n regions made of GaAs
c) Structure 3: p+ region made of Al0.3Ga0.7As, p and n regions made of GaAs
d) Structure 4: p+, p regions made of GaAs, n region made of Al0.3Ga0.7As
Note: Eg (AlxGa1-xAs) = 1.424 + 1.27x (for x < 0.4)
Consider a p+-p-n solar cell with light shining on the p+ side. Choose from the 4
structures below the one that would make the best solar cell. For which range of wavelengths does
this solar cell produce photocurrent? Explain why the 3 other structures are not an optimal choice for
a solar cell.
a) Structure 1: p+, p and n regions made of Si
b) Structure 2: p+, p and n regions made of GaAs
c) Structure 3: p+ region made of Al0.3Ga0.7As, p and n regions made of GaAs
d) Structure 4: p+, p regions made of GaAs, n region made of Al0.3Ga0.7As
Note: Eg (AlxGa1-xAs) = 1.424 + 1.27x (for x < 0.4)
professionalLv8
12 Dec 2022