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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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Progress in Photovoltaics - 2022 - Singh - Large area co‐plated bifacial n‐PERT cells with polysilicon passivating contacts.pdf Restricted Access | Published version | 22.95 MB | Adobe PDF | View/Open Request a copy |
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