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  4. Novel approach for the bonding of III-V on silicon tandem solar cells with a transparent conductive adhesive
 
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2018
Conference Paper
Title

Novel approach for the bonding of III-V on silicon tandem solar cells with a transparent conductive adhesive

Abstract
The currently used options for the monolithic interconnection of sub-cells in a Si and III-V tandem solar device are direct wafer-bonding or hetero-epitaxy. Both methods are costly and difficult to transfer into an industrial process. This work presents a novel, scalable and cost -efficient process for efficient process for the interconnection of semiconductor substrates by using a transparent conductive oxide (TCO) interlayer. The TCO material is sprayed from a solution onto both sub-cells which are subsequently connected by using a hot press. The resulting bond shows optical absorption below 2% and a connecting resistivity of 2 Ocm². Bonded samples withstood all further processing steps and thereby demonstrated mechanical stability of the bond.
Author(s)
Heitmann, Ulrike  
Fraunhofer-Institut für Solare Energiesysteme ISE  
Kluska, Sven  
Bartsch, Jonas  
Fraunhofer-Institut für Solare Energiesysteme ISE  
Hauser, Hubert  
Fraunhofer-Institut für Solare Energiesysteme ISE  
Ivanov, Alexey
Fraunhofer-Institut für Solare Energiesysteme ISE  
Janz, Stefan  
Fraunhofer-Institut für Solare Energiesysteme ISE  
Mainwork
IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018  
Project(s)
SiTaSol  
SOLGEL-PV
Funder
European Commission EC  
Bundesministerium für Wirtschaft und Technolgie BMWi (Deutschland)  
Conference
World Conference on Photovoltaic Energy Conversion (WCPEC) 2018  
Photovoltaic Specialists Conference (PVSC) 2018  
Photovoltaic Science and Engineering Conference (PVSEC) 2018  
European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) 2018  
Open Access
DOI
10.24406/publica-r-401435
10.1109/PVSC.2018.8548276
File(s)
N-507116.pdf (724.77 KB)
Language
English
Fraunhofer-Institut für Solare Energiesysteme ISE  
Keyword(s)
  • tandem solar cells

  • bonding

  • III-V on Si

  • Photovoltaik

  • Neuartige Photovoltaik-Technologie

  • Tandemsolarzelle

  • kristallines Silicium

  • solar cell

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