Document Type
Article
Publication Date
2012
Publication Source
Journal of Applied Physics
Abstract
The time dynamics of self-pumped reflection gratings in a commonly used photorefractive polymer PDCST:PVK:ECZ-BBP:C60 with no additional electron sources or traps is investigated. While holes are normally the mobile charges and responsible for grating formation, our experimental observations, analyzed using multi-exponential fitting curves, show evidence of electrons in addition to holes as charge carriers, particularly above an applied field of 40 V/μm.
The dependence of effective carrier mobilities on the applied electric field, deduced from experimental results, show stronger field dependence of electron mobility at high electric fields. At an applied field of 70 V/μm, electron and hole mobilities become approximately equal, and the contribution of electrons on grating formation becomes significant.
Inclusive pages
013108-1 to 013108-4
ISBN/ISSN
0021-8979
Document Version
Published Version
Copyright
Copyright © 2012, American Institute of Physics
Publisher
American Institute of Physics
Volume
111
Peer Reviewed
yes
Issue
1
eCommons Citation
Banerjee, Partha P.; Buller, S. H.; Liebig, C. M.; Basun, S. A.; Cook, Gary; Evans, Dean R.; Blanche, Pierre-Alexandre; Thomas, J.; Christenson, Cory W.; and Peyghambarian, N., "Time Dynamics of Self-Pumped Reflection Gratings in a Photorefractive Polymer" (2012). Electrical and Computer Engineering Faculty Publications. 107.
https://ecommons.udayton.edu/ece_fac_pub/107
Included in
Computer Engineering Commons, Electrical and Electronics Commons, Electromagnetics and Photonics Commons, Optics Commons, Other Electrical and Computer Engineering Commons, Systems and Communications Commons
Comments
This document is provided for download in compliance with the publisher's policy on self-archiving. Permission documentation is on file.