Imaging the electric potential within organic solar cells

Rebecca Saive*, Michael Scherer, Christian Mueller, Dominik Daume, Janusz Schinke, Michael Kroeger, Wolfgang Kowalsky

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

35 Citations (Scopus)
1 Downloads (Pure)


The charge transport in organic solar cells is investigated by surface potential measurements via scanning Kelvin probe microscopy. Access to the solar cell's cross-section is gained by milling holes with a focused ion beam which enables the direct scan along the charge transport path. In a study of poly(3-hexylthiophene):1-(3-methoxycarbonyl)propyl-1-phenyl[6,6]C61 (P3HT:PCBM) bulk heterojunction solar cells, the open circuit voltage is built up at the top contact. A comparison of the potential distribution within normal and inverted solar cells under operation exhibits strongly different behaviors, which can be assigned to a difference in interface properties.

Original languageEnglish
Pages (from-to)5854-5860
Number of pages7
JournalAdvanced functional materials
Issue number47
Publication statusPublished - 17 Dec 2013
Externally publishedYes


  • bulk heterojunction
  • charge transport
  • focused ion beam
  • organic electronics
  • solar cells


Dive into the research topics of 'Imaging the electric potential within organic solar cells'. Together they form a unique fingerprint.

Cite this