Very-high-efficiency double-heterostructure copper phthalocyanine/C60 photovoltaic cells

  • Peumans P
  • Forrest S
  • 168

    Readers

    Mendeley users who have this article in their library.
  • 922

    Citations

    Citations of this article.

Abstract

We demonstrate an external power conversion efficiency of (3.6±0.2)% under AM1.5 spectral illumination of 150 mW/cm2 (1.5 suns) with vacuum-deposited copper phthalocyanine/C60 thin-film double-heterostructure photovoltaic cells incorporating an exciton-blocking layer (EBL). We show that the anode work function influences the photocarrier collection characteristics through the built-in electric field. The cell parameters are less sensitive to the cathode work function, which is attributed to cathode-induced defect states in the EBL energy gap. The presence of these defect states also explains the surprisingly low resistance of the EBL to electron transport. We anticipate significant further improvements in power conversion efficiency by employing optimal structures in light-trapping geometries.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Get full text

Authors

  • P. Peumans

  • S. R. Forrest

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free