Hybrid solar cells from P3HT and silicon nanocrystals

Uwe R. Kortshagen, Chin Yl Liu, Zachary C. Holman

Research output: Contribution to journalArticlepeer-review

365 Scopus citations


We are reporting new hybrid solar cells based on blends of silicon nanocrystals (Si NCs) and poly-3(hexylthiophene) (P3HT) polymer in which a percolating network of the nanocrystals acts as the electron-conducting phase. The properties of composite Si NCs/P3HT devices made by spin-coating Si NCs and P3HT from a common solvent were studied as a function of Si NC size and Si NC/P3HT ratio. The open-circuit voltage and short-circuit current are observed to depend on the Si NC size due to changes in the bandgap and surface-area-to-volume ratio. Under simulated one-sun A.M. 1.5 direct illumination (100 mW/cm 2), devices made with 35 wt % Si NCs 3-5 nm in size showed 1.15% power conversion efficiency.

Original languageEnglish (US)
Pages (from-to)449-452
Number of pages4
JournalNano Letters
Issue number1
StatePublished - Jan 2009
Externally publishedYes

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering


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