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 [%].

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)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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