IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v13y2022i1d10.1038_s41467-022-30336-1.html
   My bibliography  Save this article

Direct and real-time observation of hole transport dynamics in anatase TiO2 using X-ray free-electron laser

Author

Listed:
  • Sang Han Park

    (Pohang Accelerator Laboratory)

  • Abhishek Katoch

    (Pohang Accelerator Laboratory)

  • Keun Hwa Chae

    (Korea Institute of Science and Technology)

  • Sanjeev Gautam

    (Dr S. S. Bhatnagar University Institute of Chemical Engineering & Technology, Panjab University)

  • Piter Miedema

    (European XFEL Gmbh)

  • Sang Wan Cho

    (Yonsei Univerity)

  • Minseok Kim

    (Pohang Accelerator Laboratory)

  • Ru-Pan Wang

    (Utrecht University
    University of Hamburg)

  • Masoud Lazemi

    (Utrecht University)

  • Frank Groot

    (Utrecht University)

  • Soonnam Kwon

    (Pohang Accelerator Laboratory)

Abstract

Carrier dynamics affects photocatalytic systems, but direct and real-time observations in an element-specific and energy-level-specific manner are challenging. In this study, we demonstrate that the dynamics of photo-generated holes in metal oxides can be directly probed by using femtosecond X-ray absorption spectroscopy at an X-ray free-electron laser. We identify the energy level and life time of holes with a long life time (230 pico-seconds) in nano-crystal materials. We also observe that trapped holes show an energy distribution in the bandgap region with a formation time of 0.3 pico-seconds and a decay time of 8.0 pico-seconds at room temperature. We corroborate the dynamics of the electrons by using X-ray absorption spectroscopy at the metal L-edges in a consistent explanation with that of the holes.

Suggested Citation

  • 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.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-30336-1
    DOI: 10.1038/s41467-022-30336-1
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-022-30336-1
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-022-30336-1?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
    ---><---

    References listed on IDEAS

    as
    1. Thomas J. Penfold & Jakub Szlachetko & Fabio G. Santomauro & Alexander Britz & Wojciech Gawelda & Gilles Doumy & Anne Marie March & Stephen H. Southworth & Jochen Rittmann & Rafael Abela & Majed Cherg, 2018. "Revealing hole trapping in zinc oxide nanoparticles by time-resolved X-ray spectroscopy," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
    2. Hikmet Sezen & Honghui Shang & Fabian Bebensee & Chengwu Yang & Maria Buchholz & Alexei Nefedov & Stefan Heissler & Christian Carbogno & Matthias Scheffler & Patrick Rinke & Christof Wöll, 2015. "Correction: Corrigendum: Evidence for photogenerated intermediate hole polarons in ZnO," Nature Communications, Nature, vol. 6(1), pages 1-1, November.
    3. E. Baldini & L. Chiodo & A. Dominguez & M. Palummo & S. Moser & M. Yazdi-Rizi & G. Auböck & B.P.P. Mallett & H. Berger & A. Magrez & C. Bernhard & M. Grioni & A. Rubio & M. Chergui, 2017. "Strongly bound excitons in anatase TiO2 single crystals and nanoparticles," Nature Communications, Nature, vol. 8(1), pages 1-11, December.
    4. 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.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Zhi Chen & Jie Wang & Hongbo Wu & Jianming Yang & Yikai Wang & Jing Zhang & Qinye Bao & Ming Wang & Zaifei Ma & Wolfgang Tress & Zheng Tang, 2022. "A Transparent Electrode Based on Solution-Processed ZnO for Organic Optoelectronic Devices," Nature Communications, Nature, vol. 13(1), pages 1-12, 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:13:y:2022:i:1:d:10.1038_s41467-022-30336-1. 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.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with 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.