Title
Novel schemes of P+ polysi hydrogeneration implemented in industrial 6" bifacial front-and-rear passivating contacts solar cells
Author
Stodolny, M.K.
Anker, J.
Tool, C.J.J.
Koppes, M.
Mewe, A.A.
Manshanden, P.
Lenes, M.
Romijn, I.G.
Publication year
2018
Abstract
In this paper we present our latest developments in bifacial 6” cells featuring polysilicon carrier-selective passivating contacts which can be seen as an upgrade to bifacial cell architectures such as PERC+ and PERT. In this study we present improvements of p+ polySi passivation on industrially relevant textured surfaces by means of advanced hydrogenation schemes, involving novel dielectric stacked layers, and modification of the B-profile leading to a record passivation level of ~8 fA/cm2 and 724 mV before firing and ~9 fA/cm2 and 722 mV after firing. The results promote industrial implementation of p+ polySi on 6” bifacial cells with excellent passivation properties and compatibility with screen-printed and fire-through metallization, especially as our latest results show Jo,contact being reduced down to 200 fA/cm2. Bifacial solar cells have been manufactured with industry compatible processing with front-and-rear passivating contacts with efficiencies above 20% in the first attempt and this development shows a potential of 23% with a bifaciality factor of 90%.
Subject
Energy Efficiency
Energy
Energy / Geological Survey Netherlands
Polysilicon
Passivating contact
Carrier selective contact
LPCVD
Bifacial
To reference this document use:
http://resolver.tudelft.nl/uuid:832433d7-34ff-483a-b8d2-142264e00669
TNO identifier
843344
Source
International Conference EU PVSEC for Photovoltaic Research, 24-28 September 2018, Brussels, Belgium, 1-4
Document type
conference paper