A Computationally Efficient Multidiode Model for Optimizing the Front Grid of Multijunction Solar Cells under Concentration

We have developed a computationally efficient simulation model for the optimization of redirecting electrical front contacts for multijunction solar cells under concentration, and we present its validation by comparison with experimental literature results. The model allows for fast determination of...

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Bibliographic Details
Published in:Journal of Renewable Energy (Hindawi) 2020-01, Vol.2020 (2020), p.1-10
Main Authors: Saive, Rebecca, Atwater, Harry A., Espinet Gonzalez, Pilar, van de Stadt, Chris H.
Format: Article
Language:English
Subjects:
Computational efficiency
Computer simulation
Concentrators
Design parameters
Diodes
Efficiency
Electric contacts
Electric properties
Emitters
Light
Metal concentrations
Optimization
Photovoltaic cells
Solar batteries
Solar cells
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Summary:We have developed a computationally efficient simulation model for the optimization of redirecting electrical front contacts for multijunction solar cells under concentration, and we present its validation by comparison with experimental literature results. The model allows for fast determination of the maximum achievable efficiency under a wide range of operating conditions and design parameters such as the contact finger redirecting capability, period and width of the fingers, the light concentration, and the metal and emitter sheet resistivity. At the example of a state-of-the-art four-junction concentrator solar cell, we apply our model to determine ideal operating conditions for front contacts with different light redirection capabilities. We find a 7% relative efficiency increase when enhancing the redirecting capabilities from 0% to 100%.
ISSN:2314-4386
2314-4394
DOI:10.1155/2020/1907530