The photophysics of luminescence in multilayered organic nanofibers

Luciana Tavares, Francesco Quochi, Clemens Simbrunner, Günther Schwabegger, Horst-Günter Rubahn, Jakob Kjelstrup-Hansen

Publikation: Konferencebidrag uden forlag/tidsskriftPosterForskning

Resumé

Multilayered crystalline nanofibers are exemplary model system for the study of exciton dynamics and lasing in organic materials due to their well-defined morphology, high luminescence efficiencies, and color tunability. The multi-layered nanofibers are composed of alternating layers of two different organic molecules (para-hexaphenyl (p6P) donor and α-sexithiophene (6T) acceptor materials). The excited donor (p6P) is able to sensitize the acceptor (6T) via resonance energy transfer (Förster) as a consequence of the overlap between the p6P photo emission spectrum and the 6T absorption spectrum. The highly efficient exciton diffusion in p6P and energy transfer to 6T in these nanofibers is quantified by time-resolved photoluminescence (PL) studies, where the extracted amplitudes and time constants are used to explain the PL temperature dependence obtained in steady state measurements. This enables us to extract the activation energy for exciton diffusion in crystalline p6P (19 meV). The weak PL temperature dependence of the acceptor material (6T) and hence its high quantum yield in combination with the small activation energy for exciton diffusion of the donor material (p6P) explain the high efficiency of the exciton diffusion and energy transfer in this system.
OriginalsprogEngelsk
Publikationsdato1. nov. 2014
StatusUdgivet - 1. nov. 2014
Begivenhed2014 MRS Fall Meeting - Boston, USA
Varighed: 30. nov. 20145. dec. 2014

Konference

Konference2014 MRS Fall Meeting
LandUSA
ByBoston
Periode30/11/201405/12/2014

Fingeraftryk

Nanofibers
Luminescence
Energy transfer
Photoluminescence
Activation energy
Crystalline materials
Quantum yield
Absorption spectra
LDS 751
Color
Temperature
Molecules

Citer dette

Tavares, L., Quochi, F., Simbrunner, C., Schwabegger, G., Rubahn, H-G., & Kjelstrup-Hansen, J. (2014). The photophysics of luminescence in multilayered organic nanofibers. Poster session præsenteret på 2014 MRS Fall Meeting, Boston, USA.
Tavares, Luciana ; Quochi, Francesco ; Simbrunner, Clemens ; Schwabegger, Günther ; Rubahn, Horst-Günter ; Kjelstrup-Hansen, Jakob. / The photophysics of luminescence in multilayered organic nanofibers. Poster session præsenteret på 2014 MRS Fall Meeting, Boston, USA.
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title = "The photophysics of luminescence in multilayered organic nanofibers",
abstract = "Multilayered crystalline nanofibers are exemplary model system for the study of exciton dynamics and lasing in organic materials due to their well-defined morphology, high luminescence efficiencies, and color tunability. The multi-layered nanofibers are composed of alternating layers of two different organic molecules (para-hexaphenyl (p6P) donor and α-sexithiophene (6T) acceptor materials). The excited donor (p6P) is able to sensitize the acceptor (6T) via resonance energy transfer (F{\"o}rster) as a consequence of the overlap between the p6P photo emission spectrum and the 6T absorption spectrum. The highly efficient exciton diffusion in p6P and energy transfer to 6T in these nanofibers is quantified by time-resolved photoluminescence (PL) studies, where the extracted amplitudes and time constants are used to explain the PL temperature dependence obtained in steady state measurements. This enables us to extract the activation energy for exciton diffusion in crystalline p6P (19 meV). The weak PL temperature dependence of the acceptor material (6T) and hence its high quantum yield in combination with the small activation energy for exciton diffusion of the donor material (p6P) explain the high efficiency of the exciton diffusion and energy transfer in this system.",
author = "Luciana Tavares and Francesco Quochi and Clemens Simbrunner and G{\"u}nther Schwabegger and Horst-G{\"u}nter Rubahn and Jakob Kjelstrup-Hansen",
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Tavares, L, Quochi, F, Simbrunner, C, Schwabegger, G, Rubahn, H-G & Kjelstrup-Hansen, J 2014, 'The photophysics of luminescence in multilayered organic nanofibers', 2014 MRS Fall Meeting, Boston, USA, 30/11/2014 - 05/12/2014.

The photophysics of luminescence in multilayered organic nanofibers. / Tavares, Luciana ; Quochi, Francesco; Simbrunner, Clemens; Schwabegger, Günther ; Rubahn, Horst-Günter; Kjelstrup-Hansen, Jakob.

2014. Poster session præsenteret på 2014 MRS Fall Meeting, Boston, USA.

Publikation: Konferencebidrag uden forlag/tidsskriftPosterForskning

TY - CONF

T1 - The photophysics of luminescence in multilayered organic nanofibers

AU - Tavares, Luciana

AU - Quochi, Francesco

AU - Simbrunner, Clemens

AU - Schwabegger, Günther

AU - Rubahn, Horst-Günter

AU - Kjelstrup-Hansen, Jakob

PY - 2014/11/1

Y1 - 2014/11/1

N2 - Multilayered crystalline nanofibers are exemplary model system for the study of exciton dynamics and lasing in organic materials due to their well-defined morphology, high luminescence efficiencies, and color tunability. The multi-layered nanofibers are composed of alternating layers of two different organic molecules (para-hexaphenyl (p6P) donor and α-sexithiophene (6T) acceptor materials). The excited donor (p6P) is able to sensitize the acceptor (6T) via resonance energy transfer (Förster) as a consequence of the overlap between the p6P photo emission spectrum and the 6T absorption spectrum. The highly efficient exciton diffusion in p6P and energy transfer to 6T in these nanofibers is quantified by time-resolved photoluminescence (PL) studies, where the extracted amplitudes and time constants are used to explain the PL temperature dependence obtained in steady state measurements. This enables us to extract the activation energy for exciton diffusion in crystalline p6P (19 meV). The weak PL temperature dependence of the acceptor material (6T) and hence its high quantum yield in combination with the small activation energy for exciton diffusion of the donor material (p6P) explain the high efficiency of the exciton diffusion and energy transfer in this system.

AB - Multilayered crystalline nanofibers are exemplary model system for the study of exciton dynamics and lasing in organic materials due to their well-defined morphology, high luminescence efficiencies, and color tunability. The multi-layered nanofibers are composed of alternating layers of two different organic molecules (para-hexaphenyl (p6P) donor and α-sexithiophene (6T) acceptor materials). The excited donor (p6P) is able to sensitize the acceptor (6T) via resonance energy transfer (Förster) as a consequence of the overlap between the p6P photo emission spectrum and the 6T absorption spectrum. The highly efficient exciton diffusion in p6P and energy transfer to 6T in these nanofibers is quantified by time-resolved photoluminescence (PL) studies, where the extracted amplitudes and time constants are used to explain the PL temperature dependence obtained in steady state measurements. This enables us to extract the activation energy for exciton diffusion in crystalline p6P (19 meV). The weak PL temperature dependence of the acceptor material (6T) and hence its high quantum yield in combination with the small activation energy for exciton diffusion of the donor material (p6P) explain the high efficiency of the exciton diffusion and energy transfer in this system.

M3 - Poster

ER -

Tavares L, Quochi F, Simbrunner C, Schwabegger G, Rubahn H-G, Kjelstrup-Hansen J. The photophysics of luminescence in multilayered organic nanofibers. 2014. Poster session præsenteret på 2014 MRS Fall Meeting, Boston, USA.