IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v7y2016i1d10.1038_ncomms12446.html
   My bibliography  Save this article

Defective TiO2 with high photoconductive gain for efficient and stable planar heterojunction perovskite solar cells

Author

Listed:
  • Yanbo Li

    (Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory
    Lawrence Berkeley National Laboratory)

  • Jason K. Cooper

    (Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory
    Lawrence Berkeley National Laboratory)

  • Wenjun Liu

    (Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory
    Lawrence Berkeley National Laboratory)

  • Carolin M. Sutter-Fella

    (Lawrence Berkeley National Laboratory
    Electrical Engineering and Computer Sciences, University of California)

  • Matin Amani

    (Lawrence Berkeley National Laboratory
    Electrical Engineering and Computer Sciences, University of California)

  • Jeffrey W. Beeman

    (Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory
    Lawrence Berkeley National Laboratory)

  • Ali Javey

    (Electrical Engineering and Computer Sciences, University of California)

  • Joel W. Ager

    (Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory
    Materials Science and Engineering, University of California)

  • Yi Liu

    (Lawrence Berkeley National Laboratory
    Molecular Foundry, Lawrence Berkeley National Laboratory)

  • Francesca M. Toma

    (Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory
    Lawrence Berkeley National Laboratory)

  • Ian D. Sharp

    (Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory
    Lawrence Berkeley National Laboratory)

Abstract

Formation of planar heterojunction perovskite solar cells exhibiting both high efficiency and stability under continuous operation remains a challenge. Here, we show this can be achieved by using a defective TiO2 thin film as the electron transport layer. TiO2 layers with native defects are deposited by electron beam evaporation in an oxygen-deficient environment. Deep-level hole traps are introduced in the TiO2 layers and contribute to a high photoconductive gain and reduced photocatalytic activity. The high photoconductivity of the TiO2 electron transport layer leads to improved efficiency for the fabricated planar devices. A maximum power conversion efficiency of 19.0% and an average PCE of 17.5% are achieved. In addition, the reduced photocatalytic activity of the TiO2 layer leads to enhanced long-term stability for the planar devices. Under continuous operation near the maximum power point, an efficiency of over 15.4% is demonstrated for 100 h.

Suggested Citation

  • Yanbo Li & Jason K. Cooper & Wenjun Liu & Carolin M. Sutter-Fella & Matin Amani & Jeffrey W. Beeman & Ali Javey & Joel W. Ager & Yi Liu & Francesca M. Toma & Ian D. Sharp, 2016. "Defective TiO2 with high photoconductive gain for efficient and stable planar heterojunction perovskite solar cells," Nature Communications, Nature, vol. 7(1), pages 1-7, November.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12446
    DOI: 10.1038/ncomms12446
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms12446
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms12446?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. Jie Fu & Zeyu Fan & Mamiko Nakabayashi & Huanxin Ju & Nadiia Pastukhova & Yequan Xiao & Chao Feng & Naoya Shibata & Kazunari Domen & Yanbo Li, 2022. "Interface engineering of Ta3N5 thin film photoanode for highly efficient photoelectrochemical water splitting," 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:7:y:2016:i:1:d:10.1038_ncomms12446. 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.