Influence of the sensitizer reduction potential on the sensitivity of photorefractive polymer composites†

dc.creatorKARINA ALEMAN AYALA
dc.creatorSVETLANA MANSUROVA SERGUEYEVNA
dc.date2010-07
dc.date.accessioned2023-07-25T16:24:04Z
dc.date.available2023-07-25T16:24:04Z
dc.identifierhttp://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1643
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7806838
dc.descriptionWe report on a series of near infrared (NIR)-sensitive photorefractive polymer composites (PPCs) based on the hole-conducting polymer PF6-TPD, which are sensitized by soluble fullerene-derivatives as electron-accepting agents.Wedemonstrate a direct correlation between the electron accepting capability of the sensitizer and the holographic response time. The holographic recording speed is found to improve by one order of magnitude when lowering the reduction potential of the sensitizer by approx. 400 mV, while all other physical parameters of the materials remain essentially identical. Furthermore, the lifetime of the mobile charge carriers is found to correlate linearly with the reduction potential, thus indicating a decrease in recombination rates for stronger accepting capability of the sensitizer. Finally, we found that pre-illumination enhanced the holographic sensitivity. The effect is found to be most pronounced for the strongest acceptor due to reduced recombination of the preformed carriers. Overall, the PPCs reported here feature the currently highest sensitivity in the NIR spectral region.
dc.formatapplication/pdf
dc.languageeng
dc.publisherJournal of Materials Chemistry
dc.relationcitation:Kober, Sebastian, et al., (2010), Influence of the sensitizer reduction potential on the sensitivity of photorefractive polymer composites†, Journal of Materials Chemistry. Vol. 20(29):6170-6175
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/4.0
dc.subjectinfo:eu-repo/classification/Inspec/Photorefractive polymer composites
dc.subjectinfo:eu-repo/classification/cti/1
dc.subjectinfo:eu-repo/classification/cti/22
dc.subjectinfo:eu-repo/classification/cti/2209
dc.subjectinfo:eu-repo/classification/cti/2209
dc.titleInfluence of the sensitizer reduction potential on the sensitivity of photorefractive polymer composites†
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/acceptedVersion
dc.audiencestudents
dc.audienceresearchers
dc.audiencegeneralPublic


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