The Effect of Mo Doping on The Charge Separation Dynamics and Photocurrent Performance of BiVO₄ Photoanodes

Authors

Brian Pattengale, Marquette University
Jier Huang, Marquette UniversityFollow

Document Type

Article

Language

eng

Format of Original

6 p.

Publication Date

12-7-2016

Publisher

Royal Society of Chemistry

Source Publication

Physical Chemistry Chemical Physics

Source ISSN

1463-9076

Abstract

Doping with electron-rich elements in BiVO₄ photoanodes has been demonstrated as a desirable approach for improving their carrier mobility and charge separation efficiency. However, the effect of doping and dopant concentration on the carrier dynamics and photoelectrochemical performance remains unclear. In this work, we examined the effects of Mo doping on the charge separation dynamics and photocurrent performance in BiVO₄photoanodes. We show that the photocurrent of BiVO₄ photoanodes increases with increasing concentration of the Mo dopant, which can be attributed to both the improved carrier mobility resulting from increased electron density and charge separation efficiency due to the diminishing of trap states upon Mo doping. The effect of doping on the electronic structure, carrier dynamics and photocurrent performance of BiVO₄ photoanodes resulting from W and Mo dopants was also compared and discussed in this study. The knowledge gained from this work will provide important insights into the optimization of the carrier mobility and charge separation efficiency of BiVO₄ photoanodes by controlling the dopants and their concentrations.

Comments

Accepted version. Physical Chemistry Chemical Physics, Vol. 18, No. 48 (December 7, 2016): 32820-32825. DOI. © 2016 Royal Society of Chemistry. Used with permission.

Recommended Citation

Pattengale, Brian and Huang, Jier, "The Effect of Mo Doping on The Charge Separation Dynamics and Photocurrent Performance of BiVO₄ Photoanodes" (2016). Chemistry Faculty Research and Publications. 524.
https://epublications.marquette.edu/chem_fac/524