High-efficiency, Cd-free copper-indium-gallium-diselenide/polymer hybrid solar cells

Vignesh Gowrishankar, Christine K. Luscombe, Michael D. McGehee*, Jean M.J. Fréchet

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


The use of a semiconducting polymer as a buffer layer replacement for CdS in traditionally all-inorganic copper-indium-gallium-diselenide (CIGS)-based solar cells is reported. The semiconducting polymer used is poly(benzimidazobenzophenanthroline) (BBL), which has physical and electronic properties that facilitate a suitable junction between the CIGS and the top electrode. We report on the fabrication, physical properties and photovoltaic characteristics of such Cd-free organic-inorganic devices, which have 6% power-conversion efficiencies.

Original languageEnglish (US)
Pages (from-to)807-812
Number of pages6
JournalSolar Energy Materials and Solar Cells
Issue number9
StatePublished - May 23 2007
Externally publishedYes


  • BBL
  • CIGS
  • Cd free
  • Hybrid
  • Polymer buffer layer

ASJC Scopus subject areas

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


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