IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v6y2015i1d10.1038_ncomms7901.html
   My bibliography  Save this article

Evidence for photogenerated intermediate hole polarons in ZnO

Author

Listed:
  • Hikmet Sezen

    (Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces (IFG))

  • Honghui Shang

    (Fritz Haber Institute of the Max Planck Society)

  • Fabian Bebensee

    (Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces (IFG))

  • Chengwu Yang

    (Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces (IFG))

  • Maria Buchholz

    (Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces (IFG))

  • Alexei Nefedov

    (Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces (IFG))

  • Stefan Heissler

    (Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces (IFG))

  • Christian Carbogno

    (Fritz Haber Institute of the Max Planck Society)

  • Matthias Scheffler

    (Fritz Haber Institute of the Max Planck Society)

  • Patrick Rinke

    (Fritz Haber Institute of the Max Planck Society
    Aalto University School of Science)

  • Christof Wöll

    (Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces (IFG))

Abstract

Despite their pronounced importance for oxide-based photochemistry, optoelectronics and photovoltaics, only fairly little is known about the polaron lifetimes and binding energies. Polarons represent a crucial intermediate step populated immediately after dissociation of the excitons formed in the primary photoabsorption process. Here we present a novel approach to studying photoexcited polarons in an important photoactive oxide, ZnO, using infrared (IR) reflection–absorption spectroscopy (IRRAS) with a time resolution of 100 ms. For well-defined (10-10) oriented ZnO single-crystal substrates, we observe intense IR absorption bands at around 200 meV exhibiting a pronounced temperature dependence. On the basis of first-principles-based electronic structure calculations, we assign these features to hole polarons of intermediate coupling strength.

Suggested Citation

  • Hikmet Sezen & Honghui Shang & Fabian Bebensee & Chengwu Yang & Maria Buchholz & Alexei Nefedov & Stefan Heissler & Christian Carbogno & Matthias Scheffler & Patrick Rinke & Christof Wöll, 2015. "Evidence for photogenerated intermediate hole polarons in ZnO," Nature Communications, Nature, vol. 6(1), pages 1-5, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms7901
    DOI: 10.1038/ncomms7901
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms7901
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms7901?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Sang Han Park & Abhishek Katoch & Keun Hwa Chae & Sanjeev Gautam & Piter Miedema & Sang Wan Cho & Minseok Kim & Ru-Pan Wang & Masoud Lazemi & Frank Groot & Soonnam Kwon, 2022. "Direct and real-time observation of hole transport dynamics in anatase TiO2 using X-ray free-electron laser," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms7901. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.