Stabilization of the response time in photorefractive polymers

Authors
Herlocker, JA Fuentes-Hernandez, C Ferrio, KB Hendrickx, E Blanche, PA Peyghambarian, N Kippelen, B Zhang, Y Wang, JF Marder, SR
Citation
Ja. Herlocker et al., Stabilization of the response time in photorefractive polymers, APPL PHYS L, 77(15), 2000, pp. 2292-2294
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
77
Issue
15
Year of publication
2000
Pages
2292 - 2294
Database
ISI
SICI code
0003-6951(20001009)77:15<2292:SOTRTI>2.0.ZU;2-E
Abstract
The optical and photoconductive fatigue of fast photorefractive polymers ha ve been studied in a family of C-60-sensitized polymer composites containin g styrene-based chromophores with varying ionization potential. Changes in response time and in photoconductivity were studied for exposures up to 10( 4) J/cm(2). Increasing the chromophore ionization potential beyond that of the polyvinylcarbazole host was found to stabilize the response time. Studi es of the electric-field dependence of the steady-state diffraction efficie ncy in various samples confirm the role of C-60 anions as possible traps. ( C) 2000 American Institute of Physics. [S0003-6951(00)02141-0].