Prof Laura Herz FRS: Publications

Exciton diffusion dynamics in an organic semiconductor nanostructure

Optics InfoBase Conference Papers (2004)

Authors:

C Daniel, C Silva, LM Herz, D Beljonne, FJM Hoeben, P Jonkheijm, APHJ Schenning, EW Meijer

Abstract:

We present ultrafast studies and Monte Carlo simulations of exciton diffusion dynamics in isolated supramolecular helices of conjugated oligomers. We model ultrafast energy relaxation, depolarization, and exciton bimolecular annihilation dynamics with unprecedented molecular detail.

Ultrafast charge photogeneration and exciton regeneration at polymeric semiconductor heterojunctions

Optics InfoBase Conference Papers (2004)

Authors:

AC Morteani, P Sreearunothai, LM Herz, RH Friend, C Silva

Abstract:

We investigate photoexcitation dynamics in blends of electron and hole transporting conjugated polymers. Excitons that dissociate at the heterojunction can be regenerated efficiently via geminate-pair recombination and endothermic energy transfer from intermediate exciplex states.

Morphology-dependent energy transfer within polyfluorene thin films -: art. no. 085201

PHYSICAL REVIEW B 69:8 (2004) ARTN 085201

Authors:

ALT Khan, P Sreearunothai, LM Herz, MJ Banach, A Köhler

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Exciton bimolecular annihilation dynamics in supramolecular nanostructures of conjugated oligomers

(2003)

Authors:

Clément Daniel, Laura M Herz, Carlos Silva, Freek JM Hoeben, Pascal Jonkheijm, Albertus PHJ Schenning, EW Meijer

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Exciton dynamics in supramolecular assemblies of p-phenylenevinylene oligomers

SYNTHETIC MET 139:3 (2003) 839-842

Authors:

LM Herz, C Daniel, C Silva, FJM Hoeben, APHJ Schenning, EW Meijer, RH Friend, RT Phillips

Abstract:

We have investigated the dynamics of photoexcitations in chiral assemblies of p-phenylenevinylene oligomers functionalized with hydrogen-bonding motifs. In the regime of low excitation densities, the luminescence transients are influenced by the migration of excitons to defect sites, indicative of fast diffusivity of excitons along the molecular assemblies. In addition, at high excitation densities, bimolecular exciton annihilation is shown to result in the fast depopulation of the stacks' excitonic energy levels. (C) 2003 Elsevier B.V. All rights reserved.

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Prof Laura Herz FRS

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Exciton diffusion dynamics in an organic semiconductor nanostructure

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Abstract:

Ultrafast charge photogeneration and exciton regeneration at polymeric semiconductor heterojunctions

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Abstract:

Morphology-dependent energy transfer within polyfluorene thin films -: art. no. 085201

Authors:

Exciton bimolecular annihilation dynamics in supramolecular nanostructures of conjugated oligomers

Authors:

Exciton dynamics in supramolecular assemblies of p-phenylenevinylene oligomers

Authors:

Abstract:

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Prof Laura Herz FRS

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Exciton diffusion dynamics in an organic semiconductor nanostructure

Authors:

Abstract:

Ultrafast charge photogeneration and exciton regeneration at polymeric semiconductor heterojunctions

Authors:

Abstract:

Morphology-dependent energy transfer within polyfluorene thin films -: art. no. 085201

Authors:

Exciton bimolecular annihilation dynamics in supramolecular nanostructures of conjugated oligomers

Authors:

Exciton dynamics in supramolecular assemblies of p-phenylenevinylene oligomers

Authors:

Abstract: