The characterization of chloroboron (iii) subnaphthalocyanine thin films and their application as a donor material for organic solar cells

Bregt Verreet, Sarah Schols, David Cheyns, Barry P. Rand, Hans Gommans, Tom Aernouts, Paul Heremans, Jan Genoe

Research output: Contribution to journalArticle

48 Scopus citations

Abstract

Chloroboron (iii) subnaphthalocyanine (SubNc) films have been characterized by ellipsometry, absorption, photoluminescence measurements, and atomic force microscopy. The films strongly absorb red light, as the extinction coefficient k peaks at 1.4 at a wavelength of 686 nm. Planar bilayer heterojunctions with fullerene (C60) on top of SubNc are measured under AM 1.5 simulated illumination at various light intensities, leading to an open-circuit voltage (Voc) of 790 mV and a power conversion efficiency of 2.5%. The external and internal quantum efficiencies peaked at 36% and 70%, respectively. The combination of a strong red absorption and high Voc make SubNc an interesting material for organic solar cells, in particular for tandem cells.

Original languageEnglish (US)
Pages (from-to)5295-5297
Number of pages3
JournalJournal of Materials Chemistry
Volume19
Issue number30
DOIs
StatePublished - Aug 10 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry

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