PVI Paper

Photovoltaics International Papers, PV Modules

PERC-based shingled solar cells and modules at Fraunhofer ISE

September 4, 2019

By Puzant Baliozian; Nils Klasen; Nico Wöhrle; Christoph Kutter; Hannah Stolzenburg; Mohammad Al-Akash; Achim Kraft; Martin Heinrich; Armin Richter; Anna Münzer; Pierre Saint-Cast; Max Mittag; Elmar Lohmüller; Tobias Fellmeth; Andreas Fell; Alma Spribille; Holger Neuhaus; Ralf Preu

This paper reports on the latest advances in passivated emitter and rear cell (PERC)-based shingled solar cell activities at Fraunhofer ISE. The approach taken is to fabricate 6" host wafers from
Czochralski-grown silicon and separate them after metallization and contact firing into bifacial p-type shingled passivated edge, emitter and rear (pSPEER) solar cells.

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Published In

PVI Issue

Photovoltaics International Volume 43

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Photovoltaics International Papers, PV Modules

Because it leads to higher efficiencies than aluminium back-surface field (Al-BSF) cells, passivated emitter and rear cell (PERC) technology is attracting more and more attention in the industry and gaining market share. However, PERC technology brings new challenges with regard to the phenomenon of degradation: some monofacial/bifacial PERC cell modules were found to demonstrate much higher power degradation than Al-BSF cell modules after damp-heat (DH: 85°C and 85% relative humidity RH, 1000h) and potential-induced degradation (PID: 85°C and 85% RH, –1,500V, 96h) tests, which will be the focus of this paper.

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PERC-based shingled solar cells and modules at Fraunhofer ISE

Published In

Photovoltaics International Volume 43

Read Next

monoPolyTM to biPolyTM: Low-cost passivating contact technologies for efficiencies towards 25%

Towards 24% efficiency for industrial n-type bifacial passivating-contact solar cells with homogeneous emitter

Industrial PERC+ solar cell efficiency projection towards 24%

tandemPV: A review of c-Si-based tandem technology and what is needed to bring it into production

Both sides now: Optimal bifaciality with silicon heterojunction solar cells

Do we really understand the failure mechanism of a PERC cell?

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