The Ultrafast Photophysics of Pentacene Coupled to Surface Plasmon Active Nanohole Films

Justin C. Johnson; III H.Reilly Thomas; Allison C. Kanarr; Jao Van De Lagemaat

doi:10.1021/jp901419s

The Ultrafast Photophysics of Pentacene Coupled to Surface Plasmon Active Nanohole Films

Justin C. Johnson, III H.Reilly Thomas, Allison C. Kanarr, Jao Van De Lagemaat

Research output: Contribution to journal › Article › peer-review

35 Scopus Citations

Abstract

Pentacene, a model organic semiconductor, is shown to couple with surface plasmon (SP) active silver nanohole films to produce enhanced excited-state absorption. In addition, the dynamics of triplet formation and decay on a subpicosecond time scale are altered due to the coupling of the excited state with the resonant SP, possibly involving the interplay between singlet fission and triplet-triplet annihilation. Shifting the resonance of the SP with respect to the pentacene excitations and introducing a dielectric spacer between pentacene and metal lead to changes in the spectra and dynamics that can be explained qualitatively. These results are compared with recent literature reports of molecule/plasmon hybridization and are placed in context with efforts to utilize SPs for enhanced solar energy conversion.

Original language	American English
Pages (from-to)	6871-6877
Number of pages	7
Journal	Journal of Physical Chemistry C
Volume	113
Issue number	16
DOIs	https://doi.org/10.1021/jp901419s https://doi.org/10.1021/jp901419s
State	Published - 23 Apr 2009
Externally published	Yes

NREL Publication Number

NREL/JA-270-45221

Keywords

basic sciences
nanomaterials

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abstract = "Pentacene, a model organic semiconductor, is shown to couple with surface plasmon (SP) active silver nanohole films to produce enhanced excited-state absorption. In addition, the dynamics of triplet formation and decay on a subpicosecond time scale are altered due to the coupling of the excited state with the resonant SP, possibly involving the interplay between singlet fission and triplet-triplet annihilation. Shifting the resonance of the SP with respect to the pentacene excitations and introducing a dielectric spacer between pentacene and metal lead to changes in the spectra and dynamics that can be explained qualitatively. These results are compared with recent literature reports of molecule/plasmon hybridization and are placed in context with efforts to utilize SPs for enhanced solar energy conversion.",

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doi = "10.1021/jp901419s",

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AU - Johnson, Justin C.

AU - Thomas, III H.Reilly

AU - Kanarr, Allison C.

AU - Van De Lagemaat, Jao

PY - 2009/4/23

Y1 - 2009/4/23

N2 - Pentacene, a model organic semiconductor, is shown to couple with surface plasmon (SP) active silver nanohole films to produce enhanced excited-state absorption. In addition, the dynamics of triplet formation and decay on a subpicosecond time scale are altered due to the coupling of the excited state with the resonant SP, possibly involving the interplay between singlet fission and triplet-triplet annihilation. Shifting the resonance of the SP with respect to the pentacene excitations and introducing a dielectric spacer between pentacene and metal lead to changes in the spectra and dynamics that can be explained qualitatively. These results are compared with recent literature reports of molecule/plasmon hybridization and are placed in context with efforts to utilize SPs for enhanced solar energy conversion.

AB - Pentacene, a model organic semiconductor, is shown to couple with surface plasmon (SP) active silver nanohole films to produce enhanced excited-state absorption. In addition, the dynamics of triplet formation and decay on a subpicosecond time scale are altered due to the coupling of the excited state with the resonant SP, possibly involving the interplay between singlet fission and triplet-triplet annihilation. Shifting the resonance of the SP with respect to the pentacene excitations and introducing a dielectric spacer between pentacene and metal lead to changes in the spectra and dynamics that can be explained qualitatively. These results are compared with recent literature reports of molecule/plasmon hybridization and are placed in context with efforts to utilize SPs for enhanced solar energy conversion.

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KW - nanomaterials

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The Ultrafast Photophysics of Pentacene Coupled to Surface Plasmon Active Nanohole Films

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