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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/22487

Title: Role of O-2 radicals on silicone plasma treatments for a-Si:H surface passivation of PV wafers bonded to glass
Authors: Granata, Stefano Nicola
Marchegiani, Alessio
Bearda, Twan
Tous, Loic
Cheyns, David
Abdulraheem, Yaser
Gordon, Ivan
Szlufcik, Jozef
Mertens, Robert
Poortmans, Jef
Issue Date: 2015
Publisher: WILEY-V C H VERLAG GMBH
Citation: PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 212(9), p. 1946-1953
Abstract: Argon (Ar) and oxygen (O-2) plasmas are performed on silicone adhesives to eliminate the negative influence of silicone on amorphous silicon (a-Si: H) surface passivation of wafers bonded to glass. Both the Ar and O-2 plasmas lead to oxidation of the silicone surface, consisting in an increase of oxygen/carbon ratio, of degree of crosslinking, and of material density. The oxidized silicone is more resilient than pristine and does not interact with the a-Si: H passivation process, allowing for state-of-the-art surface passivation of wafers bonded to glass. Similarities between the modifications induced by the Ar and O-2 plasmas on the silicone indicate the secondary role of the O-2 radicals in the oxidation process. Moreover, amorphous/crystalline heterojunction interdigitated back contact solar cells (a-Si: H/c-Si HJ i-BC) are fabricated on freestanding and bonded wafers treated with Ar plasma. The devices show comparable open-circuit voltages of up to 675 mV, confirming at device level the efficacy of the treatment. (C) 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Notes: [Granata, Stefano Nicola; Marchegiani, Alessio; Bearda, Twan; Tous, Loic; Cheyns, David; Gordon, Ivan; Szlufcik, Jozef; Poortmans, Jef] IMEC, B-3001 Heverlee, Belgium. [Granata, Stefano Nicola; Mertens, Robert; Poortmans, Jef] Katholieke Univ Leuven, B-3001 Leuven, Belgium. [Marchegiani, Alessio] Politecn Milan, I-20133 Milan, Italy. [Abdulraheem, Yaser] Kuwait Univ, Safat 13060, Kuwait. [Poortmans, Jef] UHasselt, B-3500 Hasselt, Belgium.
URI: http://hdl.handle.net/1942/22487
DOI: 10.1002/pssa.201431945
ISI #: 000362950800011
ISSN: 1862-6300
Category: A1
Type: Journal Contribution
Validation: ecoom, 2016
Appears in Collections: Research publications

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