Fabrication of Excellent Heterojunction Assisting by Interfaced Oxygen Vacancy to Improve the Separation Capacity of Photogenerated Carriers

Fabrication of Excellent Heterojunction Assisting by Interfaced Oxygen Vacancy to Improve the... Heterojunction connecting by interface chemical bonds is a promising method as it can provide more efficient route for photogenerated charge separation. In this work, the oxygen vacancies are introduced into the surface of SrTiO3 by a one‐step hydrogenation method. SrTiO3 with oxygen vacancy (STO) is compounded with Cd0.5Zn0.5S (CZS) by hydrothermal method, resulting in the successful formation of a good heterojunction structure. By comparing with the pristine SrTiO3/CZS composites, it is found that the oxygen vacancies play an important role in the formation of excellent heterojunctions, in addition to the traditional reports as charge traps and adsorption sites or the ability to cause band changes. X‐ray photoelectron spectroscopy (XPS) and high‐resolution transmission electron microscope results disclose that S2− enters the oxygen vacancy on the (110) plane of STO and interacts with the adjacent Ti in the van der Waals force to form the Ti‐O‐S group, which results in the formation of excellent heterojunctions and makes the CZS nanoparticles growth evenly on the STO nanoplates. Furthermore, the formation of excellent heterojunction and the introduction of interfaced oxygen vacancy significantly improve the separation efficiency of photogenerated charge carriers, which dramatically increases the photoelectrochemical performance. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advanced Materials Interfaces Wiley

Fabrication of Excellent Heterojunction Assisting by Interfaced Oxygen Vacancy to Improve the Separation Capacity of Photogenerated Carriers

Loading next page...
 
/lp/wiley/fabrication-of-excellent-heterojunction-assisting-by-interfaced-oxygen-AbhPrStdtR
Publisher
Wiley Subscription Services, Inc., A Wiley Company
Copyright
© 2018 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN
2196-7350
eISSN
2196-7350
D.O.I.
10.1002/admi.201701325
Publisher site
See Article on Publisher Site

Abstract

Heterojunction connecting by interface chemical bonds is a promising method as it can provide more efficient route for photogenerated charge separation. In this work, the oxygen vacancies are introduced into the surface of SrTiO3 by a one‐step hydrogenation method. SrTiO3 with oxygen vacancy (STO) is compounded with Cd0.5Zn0.5S (CZS) by hydrothermal method, resulting in the successful formation of a good heterojunction structure. By comparing with the pristine SrTiO3/CZS composites, it is found that the oxygen vacancies play an important role in the formation of excellent heterojunctions, in addition to the traditional reports as charge traps and adsorption sites or the ability to cause band changes. X‐ray photoelectron spectroscopy (XPS) and high‐resolution transmission electron microscope results disclose that S2− enters the oxygen vacancy on the (110) plane of STO and interacts with the adjacent Ti in the van der Waals force to form the Ti‐O‐S group, which results in the formation of excellent heterojunctions and makes the CZS nanoparticles growth evenly on the STO nanoplates. Furthermore, the formation of excellent heterojunction and the introduction of interfaced oxygen vacancy significantly improve the separation efficiency of photogenerated charge carriers, which dramatically increases the photoelectrochemical performance.

Journal

Advanced Materials InterfacesWiley

Published: Jan 1, 2018

Keywords: ; ; ; ;

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches

$49/month

Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.

$588

$360/year

billed annually
Start Free Trial

14-day Free Trial