On the possible correlation between dark conductivity, photoconductivity, and photorefractivity in dye-doped nematic liquid crystals

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dc.contributorVirginia Tech. Physics Departmenten
dc.contributor.authorKlysubun, Prapongen
dc.contributor.authorIndebetouw, Guy J.en
dc.contributor.departmentPhysicsen
dc.date.accessed2015-04-24en
dc.date.accessioned2015-05-21T15:46:26Zen
dc.date.available2015-05-21T15:46:26Zen
dc.date.issued2002-09-01en
dc.description.abstractThe dc conductivity of dye-doped nematic liquid crystal cells exhibits a characteristic transition from a cubic current-voltage relationship at applied voltages smaller than about 1 V to a linear one at voltages larger than about 1.5 V. The photoconductivity, and the related photorefractive response of these cells exhibit an apparent threshold at about the same characteristic voltage: An applied voltage larger than about 1.5 V is needed to measure sizeable photocurrents and photorefractive responses. We propose a model that is consistent with all these observations. At low applied voltages, a residual space charge limits the dc current, and prevents the participation of photoexcited charge carriers to photoconductivity and photorefractivity, while at higher applied voltages, the disappearance of the residual space charge allows the manifestation of these photoinduced responses. Experimental results seem to confirm the validity of the model. (C) 2002 American Institute of Physics.en
dc.description.notesContent may be divided into these groups: --Supplementary matter on instrumentation and site setting --Continuous time series data water and air temperature, and specific conductanceen
dc.format.extent7 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationKlysubun, P., Indebetouw, G. (2002). On the possible correlation between dark conductivity, photoconductivity, and photorefractivity in dye-doped nematic liquid crystals. Journal of Applied Physics, 92(5), 2528-2533. doi: 10.1063/1.1495887en
dc.identifier.doihttps://doi.org/10.1063/1.1495887en
dc.identifier.issn0021-8979en
dc.identifier.urihttp://hdl.handle.net/10919/52392en
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/jap/92/5/10.1063/1.1495887en
dc.language.isoen_USen
dc.publisherAmerican Institute of Physicsen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectCharge carriersen
dc.subjectPhotoconductivityen
dc.subjectCharged currentsen
dc.subjectElectrical propertiesen
dc.subjectNematic liquid crystalsen
dc.titleOn the possible correlation between dark conductivity, photoconductivity, and photorefractivity in dye-doped nematic liquid crystalsen
dc.title.serialJournal of Applied Physicsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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