Theory of photoexcitations in conjugated polymers: The effects of Coulomb interactions

Persistent Link:
http://hdl.handle.net/10150/282176
Title:
Theory of photoexcitations in conjugated polymers: The effects of Coulomb interactions
Author:
Chandross, Michael Evan, 1968-
Issue Date:
1996
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Many-body Coulomb interactions make understanding the complete excitation spectra of conjugated polymers a formidable task, and a variety of sophisticated experimental and theoretical techniques have been used in an attempt to elucidate their complicated electronic structure. It is thus crucial to have a intuitive, physical picture in order to interpret the wide range of available experimental data. We present the results of calculations within an exciton basis which allows for a simple pictorial description of all linear and nonlinear excitations in conjugated polymers, and settles a number of longstanding controversies. The exciton basis further allows us to justify the application of single configuration interaction (SCI) techniques to the understanding of nonlinear optical experiments in the low energy region. We show that SCI can give a clear, self-consistent picture of the photoexcitations in poly(para-phenylene vinylene), a conjugated polymer which has attracted much recent interest.
Type:
text; Dissertation-Reproduction (electronic)
Keywords:
Physics, Condensed Matter.
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Graduate College; Physics
Degree Grantor:
University of Arizona
Advisor:
Mazumdar, Sumitendra

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleTheory of photoexcitations in conjugated polymers: The effects of Coulomb interactionsen_US
dc.creatorChandross, Michael Evan, 1968-en_US
dc.contributor.authorChandross, Michael Evan, 1968-en_US
dc.date.issued1996en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractMany-body Coulomb interactions make understanding the complete excitation spectra of conjugated polymers a formidable task, and a variety of sophisticated experimental and theoretical techniques have been used in an attempt to elucidate their complicated electronic structure. It is thus crucial to have a intuitive, physical picture in order to interpret the wide range of available experimental data. We present the results of calculations within an exciton basis which allows for a simple pictorial description of all linear and nonlinear excitations in conjugated polymers, and settles a number of longstanding controversies. The exciton basis further allows us to justify the application of single configuration interaction (SCI) techniques to the understanding of nonlinear optical experiments in the low energy region. We show that SCI can give a clear, self-consistent picture of the photoexcitations in poly(para-phenylene vinylene), a conjugated polymer which has attracted much recent interest.en_US
dc.typetexten_US
dc.typeDissertation-Reproduction (electronic)en_US
dc.subjectPhysics, Condensed Matter.en_US
thesis.degree.namePh.D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplinePhysicsen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorMazumdar, Sumitendraen_US
dc.identifier.proquest9713418en_US
dc.identifier.bibrecord.b34417199en_US
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