Determination of Surface Recombination Velocities at Contacts in Organic Semiconductor Devices Using Injected Carrier Reservoirs

Oskar Sandberg, Simon Sandén, Anton Sundqvist, Jan-Henrik Smått, Ronald Österbacka

Research output: Contribution to journalArticleScientificpeer-review

19 Citations (Scopus)

Abstract

A method to determine surface recombination velocities at collecting contacts in interface-limited organic semiconductor devices, based on the extraction of injected carrier reservoirs in a single-carrier sandwich-type structure, is presented. The analytical framework is derived and verified with drift-diffusion simulations. The method is demonstrated on solution-processed organic semiconductor devices with hole-blocking TiO2/organic and SiO2/organic interfaces, relevant for solar cell and transistor applications, respectively.
Original languageUndefined/Unknown
Pages (from-to)
Number of pages5
JournalPhysical Review Letters
Volume118
Issue number7
DOIs
Publication statusPublished - 2017
MoE publication typeA1 Journal article-refereed

Keywords

  • solar cells
  • Hybrid solar cell
  • Organic electronics
  • Electric contacts

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