Figure 2: Front surface grid of solar cells A and B. In the video preceding this excercise we derived an equation for the conversion efficiency of a solar cell, that includes components for all the loss mechanisms that occur in solar cells. We can combine the non-aborption and thermalization components into a single "spectral mismatch" component, which is also known as the ultimate efficiency. Furthermore, if we use the EQE, instead of the separate components for reflection losses, tranmission losses and recombination losses, the result is this equation for the solar cell efficiency: Ea S $(A) dA EQE (X) · q:Voc . FF A. Atat Eg We will now use this equation to compare the efficiency of two solar cells, A and B, which have a different absorber layer. The two solar cells have the same basic structure and dimensions. The front surface of the solar cells is shown in Figure 2, where the width L = 10 [cm], length W = 8 [cm] and the thickness of the metallic fingers and busbars d = 0.3 [cm]. A) What is the coverage factor cf of the solar cells? Give a percentage [%].

Introductory Circuit Analysis (13th Edition)
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Author:Robert L. Boylestad
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Chapter1: Introduction
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Figure 2: Front surface grid of solar cells A and B.
d
In the video preceding this excercise we derived an equation for the conversion efficiency of a solar cell, that
includes components for all the loss mechanisms that occur in solar cells. We can combine the non-aborption
and thermalization components into a single "spectral mismatch" component, which is also known as the
ultimate efficiency. Furthermore, if we use the EQE, instead of the separate components for reflection losses,
tranmission losses and recombination losses, the result is this equation for the solar cell efficiency:
Eg. f $(A) da
EQE (X) ·
A g:Voc . FF
Eg
Aret
We will now use this equation to compare the efficiency of two solar cells, A and B, which have a different
absorber layer. The two solar cells have the same basic structure and dimensions. The front surface of the
solar cells is shown in Figure 2, where the width L = 10 [cm], length W = 8 [cm] and the thickness of the
metallic fingers and busbars d = 0.3 [cm].
A) What is the coverage factor cf of the solar cells? Give a percentage [%].
Transcribed Image Text:Figure 2: Front surface grid of solar cells A and B. d In the video preceding this excercise we derived an equation for the conversion efficiency of a solar cell, that includes components for all the loss mechanisms that occur in solar cells. We can combine the non-aborption and thermalization components into a single "spectral mismatch" component, which is also known as the ultimate efficiency. Furthermore, if we use the EQE, instead of the separate components for reflection losses, tranmission losses and recombination losses, the result is this equation for the solar cell efficiency: Eg. f $(A) da EQE (X) · A g:Voc . FF Eg Aret We will now use this equation to compare the efficiency of two solar cells, A and B, which have a different absorber layer. The two solar cells have the same basic structure and dimensions. The front surface of the solar cells is shown in Figure 2, where the width L = 10 [cm], length W = 8 [cm] and the thickness of the metallic fingers and busbars d = 0.3 [cm]. A) What is the coverage factor cf of the solar cells? Give a percentage [%].
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