Improving polymer based photovoltaic devices by reducing the voltage loss at the donor-acceptor interface

  • D.J.D. Moet
  • , L.H. Slooff
  • , J.M. Kroon
  • , S.S Chevtchenko
  • , J. Loos
  • , M.M. Koetse
  • , J. Sweelssen
  • , S.C. Veenstra

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    Abstract

    The costs of large area, organic photovoltaic devices are stronly related to their module efficiency. Even for niche markets, such as consumer electronics, efficiency is imperative since the available area is limited. Therefore, if polymer photovoltaics is to become a mature technology, it is key to increase the power conversion efficiency of the devices. In our contribution an analysis is given of the energy loss factors in P3HT:[C6O]PCBM cells. The main loss occurs as a voltage loss at the donor-accpetor interface. Since this loss factor is linked to the HOMO-LUMO levels of the system, it is impossilble to reduce this loss using the same material combination. We present polymer: [C6O]PCBM cells with similar optical properties but with a reduced voltage loss at the interface, leading to enhanced open circuit Voltage of 1.0 V (compared to 0.62 V for P3HT:[C6O]PCBM devices). The polymer is an alternating copolymer with fluorence and benzothiadiazole units (PFTBT). Well-characterised devices yield already an AM 1.5 efficiency of 4%, thus competing with state-of-the-art P3HT:PCBM devices.
    Original languageEnglish
    Title of host publicationProceedings of the 2006 MRS Fall Meeting
    Editorsxx Matt Beard
    Place of PublicationWarrendale PA
    PublisherMaterials Research Society
    Pages0974-CC03-09-
    DOIs
    Publication statusPublished - 2007
    Event2006 MRS Fall Meeting & Exhibit - Boston, United States
    Duration: 27 Nov 20061 Dec 2006
    https://www.mrs.org/fall2006

    Publication series

    NameMaterials Research Society Symposium Proceedings
    Volume974
    ISSN (Print)0272-9172

    Conference

    Conference2006 MRS Fall Meeting & Exhibit
    Country/TerritoryUnited States
    CityBoston
    Period27/11/061/12/06
    Internet address

    UN SDGs

    This output contributes to the following UN Sustainable Development Goals (SDGs)

    1. SDG 7 - Affordable and Clean Energy
      SDG 7 Affordable and Clean Energy

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