Empirically based device modeling of bulk heterojunction organic photovoltaics

Adrien Pierre, Shaofeng Lu, Ian A. Howard, Antonio Facchetti, Ana Claudia Arias*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution


An empirically based, open source, optoelectronic model is constructed to accurately simulate organic photovoltaic (OPV) devices. Bulk heterojunction OPV devices based on a new low band gap dithienothiophene-diketopyrrolopyrrole donor polymer (P(TBT-DPP)) are blended with PC70BM and processed under various conditions, with efficiencies up to 4.7%. The mobilities of electrons and holes, bimolecular recombination coefficients, exciton quenching efficiencies in donor and acceptor domains and optical constants of these devices are measured and input into the simulator to yield photocurrent with less than 7% error. The results from this model not only show carrier activity in the active layer but also elucidate new routes of device optimization by varying donor-acceptor composition as a function of position. Sets of high and low performance devices are investigated and compared side-by-side.

Original languageEnglish (US)
Title of host publicationOrganic Photovoltaics XIV
StatePublished - 2013
EventOrganic Photovoltaics XIV - San Diego, CA, United States
Duration: Aug 27 2013Aug 29 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceOrganic Photovoltaics XIV
Country/TerritoryUnited States
CitySan Diego, CA


  • Bulk heterojunction
  • Exciton quenching
  • Generation
  • Model
  • Morphology
  • Organic photovoltaic
  • Recombination
  • Simulation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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