Conjugated Conducting PolymersHelmut G. Kiess, Dionys Baeriswyl |
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Page 87
... excitonic effects ; in conventional physical terminology , an exciton is a neutral excited state consisting of an electron - hole pair in either a spin singlet or spin triplet state , bound by Coulomb forces . Since these forces are ...
... excitonic effects ; in conventional physical terminology , an exciton is a neutral excited state consisting of an electron - hole pair in either a spin singlet or spin triplet state , bound by Coulomb forces . Since these forces are ...
Page 88
... excitons bound entirely by e - p coupling , the exciton being the neutral counterpart of the ( charged ) bipolarons discussed in Sect . 1.3 . In the absence of inter - chain coupling , the singlet exciton formed in this manner would ...
... excitons bound entirely by e - p coupling , the exciton being the neutral counterpart of the ( charged ) bipolarons discussed in Sect . 1.3 . In the absence of inter - chain coupling , the singlet exciton formed in this manner would ...
Page 197
... exciton population reduces the oscillator strength for the exciton transition since states forming exciton wavefunctions are no longer available . In one- dimensional systems the saturation density Ns for excitons is simply determined ...
... exciton population reduces the oscillator strength for the exciton transition since states forming exciton wavefunctions are no longer available . In one- dimensional systems the saturation density Ns for excitons is simply determined ...
Contents
Introduction | 1 |
An Overview of the Theory of лConjugated Polymers | 7 |
7 | 65 |
Copyright | |
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A.J. Heeger atoms Baeriswyl band band gap behaviour bipolarons bond alternation bond lengths calculations chain charged solitons Chem chemical shift cis-(CH conducting polymers configuration conjugated polymers Coulomb interactions coupling Cryst D.K. Campbell defects dependence dimerization discussed dopant doping doping levels e-e interactions electron correlation electron spin electron-electron interactions electron-phonon ENDOR energy excitations exciton experimental finite polyenes frequency function Hamiltonian Hartree-Fock hopping Hubbard model Hückel inter-chain kink lattice Lett linewidth magnetic Metals molecular molecules neutral solitons nonlinear nonlinear optical nuclear observed obtained one-dimensional optical absorption optical gap parameter peak Peierls Peierls-Hubbard model phonon Phys polarons polyacetylene polyenes polypyrrole polythiophene properties proton quantum quasi-particles Raman relaxation resonance Sect shown in Fig Solid State Commun spectra spectrum spin density SSH model structure susceptibility symmetry Synth temperature theoretical theory trans trans-(CH trans-polyacetylene transition triplet valence bond values Vardeny