IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v9y2018i1d10.1038_s41467-018-05580-z.html
   My bibliography  Save this article

Crystalline TiO2 protective layer with graded oxygen defects for efficient and stable silicon-based photocathode

Author

Listed:
  • Jianyun Zheng

    (Hunan University
    Curtin University)

  • Yanhong Lyu

    (Hunan University
    Curtin University)

  • Ruilun Wang

    (Hunan University)

  • Chao Xie

    (Hunan University)

  • Huaijuan Zhou

    (Chinese Academy of Sciences)

  • San Ping Jiang

    (Curtin University)

  • Shuangyin Wang

    (Hunan University)

Abstract

The trade-offs between photoelectrode efficiency and stability significantly hinder the practical application of silicon-based photoelectrochemical devices. Here, we report a facile approach to decouple the trade-offs of silicon-based photocathodes by employing crystalline TiO2 with graded oxygen defects as protection layer. The crystalline protection layer provides high-density structure and enhances stability, and at the same time oxygen defects allow the carrier transport with low resistance as required for high efficiency. The silicon-based photocathode with black TiO2 shows a limiting current density of ~35.3 mA cm−2 and durability of over 100 h at 10 mA cm−2 in 1.0 M NaOH electrolyte, while none of photoelectrochemical behavior is observed in crystalline TiO2 protection layer. These findings have significant suggestions for further development of silicon-based, III–V compounds and other photoelectrodes and offer the possibility for achieving highly efficient and durable photoelectrochemical devices.

Suggested Citation

  • Jianyun Zheng & Yanhong Lyu & Ruilun Wang & Chao Xie & Huaijuan Zhou & San Ping Jiang & Shuangyin Wang, 2018. "Crystalline TiO2 protective layer with graded oxygen defects for efficient and stable silicon-based photocathode," Nature Communications, Nature, vol. 9(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05580-z
    DOI: 10.1038/s41467-018-05580-z
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-018-05580-z
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-018-05580-z?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. Bo Wu & Tuo Wang & Bin Liu & Huimin Li & Yunlong Wang & Shujie Wang & Lili Zhang & Shaokun Jiang & Chunlei Pei & Jinlong Gong, 2022. "Stable solar water splitting with wettable organic-layer-protected silicon photocathodes," Nature Communications, Nature, vol. 13(1), pages 1-10, 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:9:y:2018:i:1:d:10.1038_s41467-018-05580-z. 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.