Impact of sheet resistance on 2-D modeling of thin-film solar cells

Galymzhan T. Koishiyev, James R. Sites

Research output: Contribution to journalArticlepeer-review

73 Citations (Scopus)


A rigorous mathematical approach was used to find a relation between the transparent-conductive-oxide (TCO) sheet resistance ρS (Ω/□) of a thin-film solar cell and the parameter R (Ω) that describes the TCO resistance in a two-dimensional circuit model. Additionally, the mathematical relationship that connects experimentally derived series resistance RS (Ω cm2) of the solar cell to the TCO sheet resistance ρS (Ω/□) and the bulk semiconductor resistivity ρ (Ω cm) was derived. It was found that the fill factor of the solar cell is governed by a reduced dimensionless TCO sheet resistance that depends only weakly on the type and quality of the solar cell. Parameters corresponding to thin-film Cu(In,Ga)Se2, two-junction a-Si, and an ideal solar cell were used as concrete examples.

Original languageEnglish
Pages (from-to)350-354
Number of pages5
JournalSolar Energy Materials and Solar Cells
Issue number3
Publication statusPublished - Mar 2009
Externally publishedYes


  • Modeling
  • Resistance
  • Series
  • Sheet
  • TCO
  • Thin film

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films


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