Correlation between interface energetics and open circuit voltage in organic photovoltaic cells

A. Wilke, J. Endres, U. Hörmann, J. Niederhausen, R. Schlesinger, J. Frisch, P. Amsalem, J. Wagner, M. Gruber, A. Opitz, A. Vollmer, W. Brütting, A. Kahn, N. Koch

Research output: Contribution to journalArticlepeer-review

76 Scopus citations

Abstract

We have used ultraviolet and inverse photoemission spectroscopy to determine the transport gaps (Et) of C60 and diindenoperylene (DIP), and the photovoltaic gap (EPVG) of five prototypical donor/acceptor interfaces used in organic photovoltaic cells (OPVCs). The transport gap of C60 (2.5 ± 0.1) eV and DIP (2.55 ± 0.1) eV at the interface is the same as in pristine films. We find nearly the same energy loss of ca 0.5 eV for all material pairs when comparing the open circuit voltage measured for corresponding OPVCs and EPVG.

Original languageEnglish (US)
Article number233301
JournalApplied Physics Letters
Volume101
Issue number23
DOIs
StatePublished - Dec 3 2012

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Correlation between interface energetics and open circuit voltage in organic photovoltaic cells'. Together they form a unique fingerprint.

Cite this