The role of intermolecular coupling in the photophysics of disordered organic semiconductors: Aggregate emission in regioregular polythiophene
arXiv:cond-mat/0702663 · doi:10.1103/PhysRevLett.98.206406
Abstract
We address the role of excitonic coulping on the nature of photoexcitations in the conjugated polymer regioregular poly(3-hexylthiophene). By means of temperature-dependent absorption and photoluminescence spectroscopy, we show that optical emission is overwhelmingly dominated by weakly coupled H-aggregates. The relative absorbance of the 0-0 and 0-1 vibronic peaks provides a powerfully simple means to extract the magnitude of the intermolecular coupling energy, approximately 5 and 30 meV for films spun from isodurene and chloroform solutions respectively.
10 pages, 4 figures, published in Phys. Rev. Lett
Cited by in corpus (30)
- Multi-phase semicrystalline microstructures drive exciton dissociation in neat plastic semiconductors
- Determining exciton bandwidth and film microstructure in polythiophene films using linear absorption spectroscopy
- Watching the coherent birth of polaron pairs in conjugated polymers
- Charge separation by photoexcitation in semicrystalline polymeric semiconductors: An intrinsic or extrinsic mechanism?
- Spin-enhanced organic bulk heterojunction photovoltaic solar cells
- Two-dimensional spatial coherence of excitons in semicrystalline polymeric semiconductors: The effect of molecular weight
- Optimized auxiliary oscillators for the simulation of general open quantum systems
- Dissipation-assisted matrix product factorization
- Singlet-triplet annihilation limits exciton yield in poly(3-hexylthiophene)
- Intrinsically distinct hole and electron transport in conjugated polymers controlled by intra and intermolecular interactions
- How to Reduce Charge Recombination in Organic Solar Cells: There Are Still Lessons to Learn from P3HT:PCBM
- Resolving ultrafast exciton migration in organic solids at the nanoscale
- Controlling the Manifold of Polariton States Through Molecular Disorder
- Photophysics of charge-transfer excitons in thin films of π-conjugated polymers
- Evidence for Excimer Photoexcitations in an Ordered π-Conjugated Polymer Film
- Frenkel biexcitons in hybrid HJ photophysical aggregates
- Correlated-electron description of the photophysics of thin films of -conjugated polymers
- Excitonic coupling dominates the homogeneous photoluminescence excitation linewidth in semicrystalline polymeric semiconductors
- Mapping Microstructural Dynamics up to the Nanosecond of the Conjugated Polymer P3HT in the Solid State
- Chain Conformation and Exciton Delocalization in a Push-Pull Conjugated Polymer
- Mesoscopic order and the dimentionality of long-range resonance energy transfer in supramolecular semiconductors
- Charge-transfer excitons in strongly coupled organic semiconductors
- Signatures of four-particle correlations associated with exciton-carrier interactions in coherent spectroscopy on bulk GaAs
- Impact of Local Stiffness on Entropy Driven Microscopic Dynamics of Polythiophene
- Molecular Water Lilies: Orienting Single Molecules in a Polymer Film by Solvent Vapor Annealing
- Formation of a highly ordered red phase in a MEH-PPV: polystyrene pseudogels
- Unraveling the chromophoric disorder of poly(3-hexylthiophene)
- Transient strain induced electronic structure modulation in a semiconducting polymer imaged by scanning ultrafast electron microscopy
- Mesoscopic Quantum Emitters from Deterministic Aggregates of Conjugated Polymers
- Perturbation of Exciton Aggregate Coupling by Optical Excitation in Crystalline Perfluoropentacene Films