Structure-Dependent 4-Tert-Butyl Pyridine-Induced Band Bending at TiO2 Surfaces
Joint Authors
Sun, Chenghua
Göthelid, Mats
Yu, Shun
Zuleta, Marcelo
Ahmadi, Sareh
Source
International Journal of Photoenergy
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-09-05
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
The role of 4-tert butyl pyridine (4TBP) adsorption on TiO2 surface band bending has been studied using photoelectron spectroscopy.
Surface oxygen vacancies pin the Fermi level near the conduction band edge on rutile (110).
4TBP preferentially adsorbs in those vacancies and shift the Fermi level to lower binding energy in the band gap.
This is done by transferring vacancy excess charge into the empty π∗ orbital in the pyridine ring.
The anatase (100) surface contains much less oxygen vacancies although the surface is much rougher than the rutile (110).
4TBP adsorption does not have any significant effect on the surface band bending.
Thus the positive role associated with 4TBP addition to solar cell electrolytes is suggested to protection against adsorption of other electrolyte components such as Li and I.
American Psychological Association (APA)
Göthelid, Mats& Yu, Shun& Ahmadi, Sareh& Sun, Chenghua& Zuleta, Marcelo. 2010. Structure-Dependent 4-Tert-Butyl Pyridine-Induced Band Bending at TiO2 Surfaces. International Journal of Photoenergy،Vol. 2011, no. 2011, pp.1-6.
https://search.emarefa.net/detail/BIM-469088
Modern Language Association (MLA)
Göthelid, Mats…[et al.]. Structure-Dependent 4-Tert-Butyl Pyridine-Induced Band Bending at TiO2 Surfaces. International Journal of Photoenergy No. 2011 (2011), pp.1-6.
https://search.emarefa.net/detail/BIM-469088
American Medical Association (AMA)
Göthelid, Mats& Yu, Shun& Ahmadi, Sareh& Sun, Chenghua& Zuleta, Marcelo. Structure-Dependent 4-Tert-Butyl Pyridine-Induced Band Bending at TiO2 Surfaces. International Journal of Photoenergy. 2010. Vol. 2011, no. 2011, pp.1-6.
https://search.emarefa.net/detail/BIM-469088
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-469088