
The Library
Sub-band level-assisted photoconduction in epitaxial BiFeO3 films
Tools
Bhatnagar, Akash, Kim, Young Heon, Hesse, Dietrich and Alexe, M. (Marin) (2014) Sub-band level-assisted photoconduction in epitaxial BiFeO3 films. Applied Physics Letters, Volume 105 (Number 12). 122905. doi:10.1063/1.4896508
|
PDF
WRAP_Bhatnagar_spectralwo.pdf - Accepted Version - Requires a PDF viewer. Download (1377Kb) | Preview |
Official URL: http://dx.doi.org/10.1063/1.4896508
Abstract
Sub-band level assisted conduction mechanisms are well known in the field of semiconducting materials. In this work, we explicitly show the validity of such a mechanism in the multiferrroic material BiFeO3 (BFO). Our study is based on two different systems of epitaxial thin films of BFO, relaxed and strained. By analyzing the spectral distribution of the photoresponse from both the systems, the role of the sub-band levels in the photoconductive phenomena becomes evident. Additionally, the influence of epitaxial strain on the trapping activity of these levels is also observed. A model is proposed by taking into account the reversal of the role of a sub-band gap level, i.e., from a trapping to a ground state.
Item Type: | Journal Article | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QC Physics | ||||||||||
Divisions: | Faculty of Science > Physics | ||||||||||
Library of Congress Subject Headings (LCSH): | Bismuth compounds, Photoconductivity | ||||||||||
Journal or Publication Title: | Applied Physics Letters | ||||||||||
Publisher: | American Institute of Physics | ||||||||||
ISSN: | 0003-6951 | ||||||||||
Official Date: | 2014 | ||||||||||
Dates: |
|
||||||||||
Volume: | Volume 105 | ||||||||||
Number: | Number 12 | ||||||||||
Article Number: | 122905 | ||||||||||
DOI: | 10.1063/1.4896508 | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Restricted or Subscription Access |
Request changes or add full text files to a record
Repository staff actions (login required)
![]() |
View Item |
Downloads
Downloads per month over past year