Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/37001
Title: Large area co‐plated bifacial n‐PERT cells with polysilicon passivating contacts on both sides
Authors: Singh, Sukhvinder
CHOULAT, Patrick 
GOVAERTS, Jonathan 
VAN DER HEIDE, Arvid 
DEPAUW, Valerie 
DUERINCKX, Filip 
Naber, Ronald
Lenes, Martijn
Renes, Marten
TOUS, Loic 
POORTMANS, Jef 
Issue Date: 2022
Publisher: WILEY
Source: Progress in Photovoltaics, 30 (8) , p. 899-909
Abstract: In this work, we show the integration of polysilicon-based passivating contacts in plated bifacial n-type PERT (passivated emitter and rear totally diffused) solar cells. We show the viability of n-PERT cells using two-side passivating contacts with two-side plated nickel/silver metallization. Compared with commercially available "TOPCon" cells with rear side passivated contacts only, n-PERT cells with both side passivated contacts should enable the exploitation of the full potential of passivated contacts. We show that both n-poly and p-poly were applied and co-plated successfully on both sides of n-PERT solar cells. Considering the potential parasitic absorption losses on the front side of the device originating from p-poly, we applied selective p-poly by patterning. We compared two patterning methods for front side polysilicon: the masking and etch approach using inkjet printing and a simple and cost-effective patterning method using UV laser oxidation. A best efficiency of 22.7% has been achieved with these cells so far on large area (244.3 cm(2)) n-type Cz, with a potential efficiency above 24%. Some of these co-plated bifacial cells have been processed into one-cell laminates using smart wire interconnection (SWCT) technology. These have passed thermal cycling (TC) tests as defined in IEC61215.
Notes: Singh, S (corresponding author), Imec Partner EnergyVille, Kapeldreef 75, B-3001 Leuven, Belgium.
sukhvinder.singh@imec.be
Keywords: n-PERT;Passivating contacts;patterned poly-Si;TOPCon
Document URI: http://hdl.handle.net/1942/37001
ISSN: 1062-7995
e-ISSN: 1099-159X
DOI: 10.1002/pip.3548
ISI #: WOS:000761597700001
Rights: 2022 John Wiley & Sons, Ltd.
Category: A1
Type: Journal Contribution
Validations: ecoom 2023
Appears in Collections:Research publications

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