Flexible Modules Using <70 μm Thick Silicon Solar Cells

André Augusto, Kevin Tyler, Stanislau Herasimenka, Stuart Bowden

Research output: Contribution to journalConference articlepeer-review

12 Scopus citations

Abstract

Highly flexible modules using thin 153 cm2 silicon crystalline cells and transparent fluoropolymer foil are demonstrated. The modules can be flexed 200 times around a bend radius of 4 cm without change in efficiency. The silicon crystalline heterojunction solar cells are 65±5 μm-thick with efficiencies up to 18.4%. Cracks in the solar cells and interconnections that are induced by mechanical stress during module bending are examined using electroluminescence. Two interconnection solutions are discussed: ribbons affixed to the busbars using a conductive adhesive, and indium coated wires directly bonded to the cell fingers. Modules using wire interconnection are found to be highly flexible with efficiencies greatly exceeding existing commercial flexible modules using thin films and have potential applications in light-weight modules for building integrated and portable photovoltaic power.

Original languageEnglish (US)
Pages (from-to)493-499
Number of pages7
JournalEnergy Procedia
Volume92
DOIs
StatePublished - Aug 1 2016
Event6th International Conference on Crystalline Silicon Photovoltaics, SiliconPV 2016 - Chambery, France
Duration: Mar 7 2016Mar 9 2016

Keywords

  • flexible
  • heterojunction
  • module
  • silicon

ASJC Scopus subject areas

  • Energy(all)

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