Amorphous Silicon/Crystalline Silicon Heterojunction Solar Cells

Christophe Ballif*, Stefaan De Wolf, Antoine Descoeudres, Zachary C. Holman

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

25 Scopus citations


Silicon heterojunction solar cells are crystalline silicon-based devices in which thin amorphous silicon layers deposited on the wafer surfaces serve as passivated, carrier-selective contacts. The success of this technology is attributable to the ability of amorphous silicon to passivate dangling bonds-thereby removing surface recombination sites-without blocking charge carrier transport. This unique combination allows the recombination-active metal contacts to be displaced from the wafer surfaces, enabling record-high open-circuit voltages of up to 750. mV and efficiencies of up to 25.6%. This chapter introduces the silicon heterojunction concept and discusses device fabrication, operation, and manufacturing. Active areas of research and likely future developments are identified throughout.

Original languageEnglish (US)
Title of host publicationSemiconductors and Semimetals
PublisherAcademic Press Inc.
Number of pages48
StatePublished - 2014
Externally publishedYes

Publication series

NameSemiconductors and Semimetals
ISSN (Print)0080-8784


  • Amorphous silicon
  • Heterojunction
  • Photovoltaics
  • Silicon
  • Solar cell
  • Transparent conductive oxide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry


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