Doping-induced carrier profiles in organic semiconductors determined from capacitive extraction-current transients

Mathias Nyman, Oskar Sandberg, Staffan Dahlström, D Spoltore, C Korner, YD Zhang, S Barlow, SR Marder, K Leo, K Vandewal, Ronald Österbacka

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

9 Citeringar (Scopus)

Sammanfattning

A method to determine the doping induced charge carrier profiles in lightly and moderately doped organic semiconductor thin films is presented. The theory of the method of Charge Extraction by a Linearly Increasing Voltage technique in the doping-induced capacitive regime (doping-CELIV) is extended to the case with non-uniform doping profiles and the analytical description is verified with drift-diffusion simulations. The method is demonstrated experimentally on evaporated organic smallmolecule thin films with a controlled doping profile, and solution-processed thin films where the nonuniform doping profile is unintentional, probably induced during the deposition process, and a priori unknown. Furthermore, the method offers a possibility of directly probing charge-density distributions at interfaces between highly doped and lightly doped or undoped layers.
OriginalspråkEngelska
Sidor (från-till)
Antal sidor9
TidskriftScientific Reports
Volym7
DOI
StatusPublicerad - 2017
MoE-publikationstypA1 Tidskriftsartikel-refererad

Nyckelord

  • profiles
  • Organic solar cells
  • Extraction current transients
  • doping

Fingeravtryck

Fördjupa i forskningsämnen för ”Doping-induced carrier profiles in organic semiconductors determined from capacitive extraction-current transients”. Tillsammans bildar de ett unikt fingeravtryck.

Citera det här