Weak light performance of PERC, PERT and standard industrial solar cells

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Krügener, J.; Harder, N.-P.: Weak light performance of PERC, PERT and standard industrial solar cells. In: Energy Procedia 38 (2013), S. 108-113. DOI: https://doi.org/10.1016/j.egypro.2013.07.256

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Sum total of downloads: 117




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Abstract: 
We use SENTAURUS DEVICE simulation to investigate the effect of "passivated emitter and rear cell" (PERC) and "passivated emitter and rear, totally-diffused" (PERT) device architecture on the solar cells' weak light performances. Injection-dependent carrier lifetimes can also strongly influence the fill factor and weak light performance of solar cells. To focus on the effect of the device architecture alone, we present here simulations with essentially injection independent carrier lifetimes. In our simulations we find that at 1/10 of AM 1.5G ("tenth of one sun") the standard industrial cell architecture with full-area BSF loses about 1.7% efficiency and the similar PERT cell structure loses 1.4% to 1.6%, depending on wafer quality. The PERC cells suffer only 1.2% to 1.5% loss of efficiency at 1/10 sun. The lower losses for PERC solar cells result from the fact that at lower illumination intensity the relatively high resistance of PERC cells is less significant. We furthermore find that only for PERC solar cells the optimum wafer doping concentration depends on the illumination intensity.
License of this version: CC BY-NC-ND 3.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2013
Appears in Collections:An-Institute

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pos. country downloads
total perc.
1 image of flag of Germany Germany 56 47.86%
2 image of flag of China China 21 17.95%
3 image of flag of United States United States 15 12.82%
4 image of flag of No geo information available No geo information available 9 7.69%
5 image of flag of Vietnam Vietnam 4 3.42%
6 image of flag of France France 3 2.56%
7 image of flag of Russian Federation Russian Federation 2 1.71%
8 image of flag of Italy Italy 1 0.85%
9 image of flag of Czech Republic Czech Republic 1 0.85%
10 image of flag of Canada Canada 1 0.85%
    other countries 4 3.42%

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