The role of ultrafast torsional relaxation in the emission from polythiophene aggregates

An understanding of aggregation effects in organic semiconductors is essential for their effective use in optoelectronic devices. Typically, the electronic dynamics in such systems are heavily dependant upon the aggregation state, and dynamics often occur on sub-nanosecond timescales.

[1]  Jenny Clark,et al.  Determining exciton bandwidth and film microstructure in polythiophene films using linear absorption spectroscopy , 2009, 0903.1670.

[2]  Jenny Clark,et al.  Determining exciton coherence from the photoluminescence spectral line shape in poly(3-hexylthiophene) thin films. , 2009, The Journal of chemical physics.

[3]  W. Warta,et al.  Solar cell efficiency tables (version 33) , 2009 .

[4]  L. Herz,et al.  Dynamics of excited-state conformational relaxation and electronic delocalization in conjugated porphyrin oligomers. , 2008, Journal of the American Chemical Society.

[5]  L. Herz,et al.  Theory of non-Condon emission from the interchain exciton in conjugated polymer aggregates. , 2007, The Journal of chemical physics.

[6]  V. Sundström,et al.  Ultrafast dynamics of singlet-singlet and singlet-triplet exciton annihilation in poly(3-2 '-methoxy-5 '-octylphenyl)thiophene films , 2007 .

[7]  Jenny Clark,et al.  Role of intermolecular coupling in the photophysics of disordered organic semiconductors: aggregate emission in regioregular polythiophene. , 2007, Physical review letters.

[8]  C. Sheng,et al.  Experimental determination of the charge/neutral branching ratio η in the photoexcitation of π -conjugated polymers by broadband ultrafast spectroscopy , 2007 .

[9]  L. Herz,et al.  Intermolecular interaction effects on the ultrafast depolarization of the optical emission from conjugated polymers. , 2007, Physical review letters.

[10]  R. Friend,et al.  Anomalous energy transfer dynamics due to torsional relaxation in a conjugated polymer. , 2006, Physical review letters.

[11]  Jenny Clark,et al.  Molecular-weight dependence of interchain polaron delocalization and exciton bandwidth in high-mobility conjugated polymers , 2006 .

[12]  F. Spano.  Absorption in regio-regular poly(3-hexyl)thiophene thin films: Fermi resonances, interband coupling and disorder , 2006 .

[13]  Y. Aso,et al.  Intrachain photoluminescence properties of conjugated polymers as revealed by long oligothiophenes and polythiophenes diluted in an inactive solid matrix , 2006 .

[14]  F. Spano,et al.  Modeling disorder in polymer aggregates: the optical spectroscopy of regioregular poly(3-hexylthiophene) thin films. , 2005, The Journal of chemical physics.

[15]  G. R. Webster,et al.  Ultrafast depolarization of the fluorescence in a conjugated polymer , 2005 .

[16]  H. Sirringhaus,et al.  Effect of interchain interactions on the absorption and emission of poly(3-hexylthiophene) , 2003 .

[17]  A R Bishop,et al.  Conformational dynamics of photoexcited conjugated molecules. , 2002, Physical review letters.

[18]  R. Österbacka,et al.  Photoexcitation dynamics in regioregular and regiorandom polythiophene films , 2001 .

[19]  V. Sundström,et al.  Luminescence quenching by inter-chain aggregates in substituted polythiophenes , 2001 .

[20]  R. T. Phillips,et al.  Exciton migration to chain aggregates in conjugated polymers: influence of side-chain substitution , 2001 .

[21]  R. T. Phillips,et al.  Effects of aggregation on the excitation transfer in perylene-end-capped polyindenofluorene studied by time-resolved photoluminescence spectroscopy , 2001 .

[22]  S. P. Kennedy,et al.  Time-resolved site-selective spectroscopy of poly(p-phenylene vinylene) , 2001 .

[23]  M. Baumgarten,et al.  Franck-Condon spectra and electron-libration coupling in para-polyphenyls , 2001 .

[24]  R. T. Phillips,et al.  Effects of interchain interactions, polarization anisotropy, and photo-oxidation on the ultrafast photoluminescence decay from a polyfluorene , 2000 .

[25]  B. Hecht,et al.  Single-Molecule Imaging Revealing the Deformation-Induced Formation of a Molecular Polymer Blend , 2000 .

[26]  Charles E. Swenberg,et al.  Electronic Processes in Organic Crystals and Polymers , 1999 .

[27]  E. W. Meijer,et al.  Two-dimensional charge transport in self-organized, high-mobility conjugated polymers , 1999, Nature.

[28]  O. Inganäs,et al.  PHOTOPHYSICS OF SUBSTITUTED POLYTHIOPHENES , 1999 .

[29]  H. Sirringhaus,et al.  Integrated optoelectronic devices based on conjugated polymers , 1998, Science.

[30]  C. Weder,et al.  Highly polarized luminescence from oriented conjugated polymer/polyethylene blend films , 1997 .

[31]  Homer Antoniadis,et al.  Organic Electroluminescent Devices , 1996, Science.

[32]  R. Friend,et al.  Chromism and luminescence in regioregular poly(3-dodecylthiophene) , 1996 .

[33]  J. Brédas,et al.  Nature of photoexcitations in poly (paraphenylene vinylene) and its oligomers , 1994 .

[34]  A. Heeger,et al.  Highly ordered conjugated polymers in polyethylene : orientation by mesoepitaxy , 1991 .

[35]  Smith,et al.  Percolation on a self-assembled network: Decoration of polyethylene gels with conducting polymer. , 1990, Physical review letters.