Book chapter
Spectroscopy of Long‐Lived Photoexcitations in π‐Conjugated Systems
Photophysics of Molecular Materials, pp.183-259
Wiley‐VCH Verlag GmbH & Co. KGaA
11/25/2005
DOI: 10.1002/3527607323.ch5
Abstract
This chapter contains sections titled:
Introduction
Basic Properties of π‐Conjugated Polymers
Optical Transitions of Photoexcitations in Conducting Polymers
Optical Transitions of Solitons in Polymers with Degenerate Ground State
Optical Transitions of Charged Excitations in NDGS Polymers
The Polaron Excitation
The Bipolaron Excitation
The π‐Dimer and the Delocalized Polaron Excitations
Optical Transitions of Neutral Excitations in NDGS Polymers
Singlet Excitons
Triplet Excitons
Polaron Pairs
Infrared Active Vibrational Modes
Experimental Methods
Photomodulation Spectroscopy of Long‐Lived Photoexcitations
Optically Detected Magnetic Resonance Techniques
The Electron Spin
Electron Spin Resonance
Basic Principles of µ‐Wave Resonant Transitions
ESR Signal Strength and Population Statistics of Spin‐Up and Spin‐Down Levels
Magnetic Resonance Spectroscopy of Long‐Lived Photoexcited States in π‐Conjugated Polymers
The ODMR Setup
Recombination, Relaxation and Generation Processes
Mono‐ and Bimolecular Recombination Mechanisms
Recombination Kinetics
Steady‐State Case
Frequency Response
Generalized Coordinates
Dispersive Kinetics: Frequency Domain
Lifetime Distribution for Dispersive Processes
Inhomogeneous Distribution of Recombination Lifetimes: General Case
Polaron Recombination and Quantum Efficiency of OLEDs
Polaron Recombination in OLEDs
Spin‐Dependent Exciton Formation Cross‐Sections
Photoinduced Absorption: Spectroscopy and Dynamics
Red Polythiophenes: Regio‐Regular, Regio‐Random
Photomodulation Studies of RRa‐P3HT
Photomodulation Studies in RR‐P3HT
The Polaron Relaxation Energy
The Spectral Anti‐Resonances
Recombination Kinetics
Poly(p‐phenylenebipyridinevinylene)
Poly(phenylenevinylene)
Photophysics of a Blue‐Emitting Polyfluorene
Electronic Structure of PFO Phases
Photoexcitation Dynamics in PFO
Measuring the Conjugation Length Using Photoinduced Absorption Spectroscopy
ODMR Spectroscopy: Measurement of Spin‐Dependent Polaron Recombination Rates
Spin‐Dependent Exciton Formation Probed by PADMR Spectroscopy
Spin‐Dependent Exciton Formation Probed by PLDMR Spectroscopy
Quantitative Modeling of Spin‐Dependent Recombination Spectroscopy
Material Dependence of Spin‐Dependent Exciton Formation Rates
The Relation Between Spin‐Dependent Exciton Formation Rates and the Singlet Exciton Yield in OLEDs
Conclusion
Details
- Title: Subtitle
- Spectroscopy of Long‐Lived Photoexcitations in π‐Conjugated Systems
- Creators
- Markus Wohlgenannt - University of IowaEitan Ehrenfreund - Technion – Israel Institute of TechnologyZ. Valy Vardeny - University of Utah
- Contributors
- Guglielmo Lanzani (Editor) - Politecnico di Milano
- Resource Type
- Book chapter
- Publication Details
- Photophysics of Molecular Materials, pp.183-259
- Publisher
- Wiley‐VCH Verlag GmbH & Co. KGaA; Weinheim, FRG
- DOI
- 10.1002/3527607323.ch5
- Number of pages
- 77
- Language
- English
- Date published
- 11/25/2005
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984428773902771
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