Trapping mechanisms and dynamics in bis-triarylamine based photorefractive polymer composites

Canek Fuentes-Hernandez, Jayan Thomas, Gerald Meredith, Nasser N Peyghambarian, Seth R. Marder, Bernard Kippelen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We report on the trapping mechanisms in bis-triarylamine (PATPD) based polymer composites. Although exceptional stability under continuous operation has been reported in PATPD-based composites, a small degradation of the response time in photorefractive devices under continuous operation has been found when improved styrene-based chromophores, with high figure-of-merit, are used. The accumulation of relatively large densities (∼10 17 cm -3) of filled traps is observed even though to first approximation the transport manifold has the lowest ionization potential of all the moieties in the composite, so no apparent deep trapping sites are to be present. The results of spectroscopic studies where the formation of chromophore aggregates is explored and correlated with the formation of hole-trapping sites that dominate the temporal evolution of the photogenerated current density and C 60 anion accumulation after several minutes of continuous operation will be presented and compared with numerical simulations considering a two-trapping site model in materials containing the chromophore DBDC.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsK. Meerholz
Pages96-102
Number of pages7
Volume5521
DOIs
StatePublished - 2004
EventOrganic Holographic Materials and Applications II - Denver, CO, United States
Duration: Aug 5 2004Aug 5 2004

Other

OtherOrganic Holographic Materials and Applications II
CountryUnited States
CityDenver, CO
Period8/5/048/5/04

Fingerprint

Chromophores
trapping
chromophores
composite materials
Composite materials
polymers
Polymers
Ionization potential
Styrene
Current density
Negative ions
styrenes
figure of merit
ionization potentials
Degradation
Computer simulation
traps
current density
degradation
anions

Keywords

  • Photogenerated current density
  • Photorefractive polymers
  • Trapping

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Fuentes-Hernandez, C., Thomas, J., Meredith, G., Peyghambarian, N. N., Marder, S. R., & Kippelen, B. (2004). Trapping mechanisms and dynamics in bis-triarylamine based photorefractive polymer composites. In K. Meerholz (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 5521, pp. 96-102). [17] https://doi.org/10.1117/12.562924

Trapping mechanisms and dynamics in bis-triarylamine based photorefractive polymer composites. / Fuentes-Hernandez, Canek; Thomas, Jayan; Meredith, Gerald; Peyghambarian, Nasser N; Marder, Seth R.; Kippelen, Bernard.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / K. Meerholz. Vol. 5521 2004. p. 96-102 17.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fuentes-Hernandez, C, Thomas, J, Meredith, G, Peyghambarian, NN, Marder, SR & Kippelen, B 2004, Trapping mechanisms and dynamics in bis-triarylamine based photorefractive polymer composites. in K Meerholz (ed.), Proceedings of SPIE - The International Society for Optical Engineering. vol. 5521, 17, pp. 96-102, Organic Holographic Materials and Applications II, Denver, CO, United States, 8/5/04. https://doi.org/10.1117/12.562924
Fuentes-Hernandez C, Thomas J, Meredith G, Peyghambarian NN, Marder SR, Kippelen B. Trapping mechanisms and dynamics in bis-triarylamine based photorefractive polymer composites. In Meerholz K, editor, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 5521. 2004. p. 96-102. 17 https://doi.org/10.1117/12.562924
Fuentes-Hernandez, Canek ; Thomas, Jayan ; Meredith, Gerald ; Peyghambarian, Nasser N ; Marder, Seth R. ; Kippelen, Bernard. / Trapping mechanisms and dynamics in bis-triarylamine based photorefractive polymer composites. Proceedings of SPIE - The International Society for Optical Engineering. editor / K. Meerholz. Vol. 5521 2004. pp. 96-102
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