Abstract
The formation of polarons in the presence of oxygen vacancies at the rutile TiO2 surfaces is a widely studied topic due to its importance in complex surface reactions. In this paper, we have studied polaron formation both near and infinitely far away from the oxygen vacancy on the (110) rutile TiO2 surface by ab initio density functional theory and screened hybrid functionals. We conclude that a polaron prefers to stay near the oxygen vacancy due to electrostatic attraction between the positively charged oxygen vacancy and polaron. Although two polarons introduced by an oxygen vacancy repel each other, the oxygen vacancy effectively binds two polarons, forming a bipolaron. Moreover, our calculated vacancy formation energies elucidate the conditions under which the polarons are likely to be formed.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
