Conjugated Conducting Polymers |
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Page 199
It has been found that upon doping new strong absorption bands appear at 0 . 7
– 0 . 8 eV , and in the infrared vibrational excitations at 900 , 1280 and 1390 cm -
1 ( 100 - 110 , 160 and 175 meV ) with a concomitant decrease of the intrinsic ...
It has been found that upon doping new strong absorption bands appear at 0 . 7
– 0 . 8 eV , and in the infrared vibrational excitations at 900 , 1280 and 1390 cm -
1 ( 100 - 110 , 160 and 175 meV ) with a concomitant decrease of the intrinsic ...
Page 201
45 eV peak and the IR modes vary with temperature and with the exciting light
intensity in the same way , whereas the absorption peak at 1 . 35 eV behaves
differently ( it disappears above about 200 K ) . The IR modes and the absorption
...
45 eV peak and the IR modes vary with temperature and with the exciting light
intensity in the same way , whereas the absorption peak at 1 . 35 eV behaves
differently ( it disappears above about 200 K ) . The IR modes and the absorption
...
Page 202
We turn now to experiments on photo - induced absorption in the picosecond
time domain . It was found that the absorption band at 0 . 45 eV appears with a
relative change in transmission of AT / T of about - 6 x 10 - 2 [ 4 . 96 ] . This
change is ...
We turn now to experiments on photo - induced absorption in the picosecond
time domain . It was found that the absorption band at 0 . 45 eV appears with a
relative change in transmission of AT / T of about - 6 x 10 - 2 [ 4 . 96 ] . This
change is ...
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Contents
Introduction | 1 |
An Overview of the Theory of rConjugated Polymers | 7 |
References | 114 |
Copyright | |
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absorption addition applied approach approximation atoms band behaviour bipolarons bond bond alternation calculations carriers chain charged chemical concentration conductivity configuration conjugated polymers contribution correlation corresponding Coulomb Coulomb interactions coupling decreases defects density dependence described determined dimerization discussed dopant doping effects electron electron-electron energy excitations expected experimental experiments field finite frequency function give ground Hamiltonian hopping Hubbard important increase indicated interactions interpretation involving lattice leads length Lett limit localized magnetic materials measurements metallic methods modes molecules motion neutral nuclear observed obtained optical pair parameter peak phonon Phys Physics polarons polyacetylene polyenes polymers position properties range relaxation resonance respect samples Sect separation shift shown shows similar single soliton spectra spectrum spin structure studies symmetry Synth temperature theoretical theory trans-(CH transition units valence values whereas