New semiconductor device physics in polymer diodes and transistors

Burroughes, J. H.; Jones, C.A.; Friend, Richard H.

doi:10.1038/335137a0

Cited by 668 publications

(258 citation statements)

References 15 publications

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“…By charge-injection doping at an MS interface, one can use the polymer semiconductor as the active element in thin-film diodes (Tomozawa et al, 1987(Tomozawa et al, , 1989 and field-effect transistors (FET's) (Burroughes et al, 1988;Garnier et al, 1994;Drury et al, 1998). Tomozawa et al (1987Tomozawa et al ( , 1989) demonstrated the first example of an electronic device component fabricated by casting the active polymer directly from solution; even these early diodes exhibited excellent current-voltage characteristics.…”

Section: E Charge Injection At a Metal-semiconducting Polymer (Ms) Imentioning

confidence: 99%

Nobel Lecture: Semiconducting and metallic polymers: The fourth generation of polymeric materials

2001

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Section: E Charge Injection At a Metal-semiconducting Polymer (Ms) Imentioning

confidence: 99%

Nobel Lecture: Semiconducting and metallic polymers: The fourth generation of polymeric materials

2001

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“…[4][5][6][7][8][9] Different from the traditional conductors, the charge carriers in conjugated polymers are some self-localized nonlinear excitations, such as solitons, polarons, or bipolarons, which are inherent features of quasi-one-dimensional conducting polymer associated with various structural and charge distortions, depending on the properties of the polymer chain as well as on the concentration of charge doping. [8][9][10][11][12] In trans-PA, the most important quasi-particles responsible for the charge transport are solitons serving as domain walls to distinguish the two opposite bond length alternation patterns which might coexist in undisturbed trans-PA because of the two-fold ground state energetical degeneracy.…”

Section: Introductionmentioning

confidence: 99%

Effect of Electron−Electron Interactions on the Charge Carrier Transitions intrans-Polyacetylene

Schollwöck

2010

J. Phys. Chem. A

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By employing a newly developed nonadiabatic dynamical simulation method, which is a combination of classical molecular dynamics (MD) and the adaptive time-dependent density matrix renormalization group (TDDMRG), we investigate the dynamics of charge carrier transitions in trans-polyacetylene (PA) with the inclusion of both electron-phonon and electron-electron interactions. The calculations are performed within a modified Su-Schrieffer-Heeger (SSH) model in which electron-electron interactions are taken into account via the combination with extended Hubbard model (EHM). We find that removing an electron from a trans-PA chain bearing a positively charged polaron leads to the formation of a pair of charged solitons. Furthermore, we study the effect of electron-electron interactions on such charge carrier transitions in trans-PA. Our results show that increasing the on-site Coulomb interaction U and the nearest-neighbor Coulomb repulsion V will not change the qualitative behavior of the transition from a polaron to a soliton pair in the evolution process but will quantitatively reduce the moving velocities of the both formed solitons significantly and change the conditions for the soliton collisions. * Electronic address: haibo.ma.cn@gmail.com † Electronic address: schollwoeck@lmu.de 2

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“…1 Conjugated polymers are now used as active materials in a wide variety of prototype applications such as light emitting diodes 2 and organic transistors. 3,4 As a first stage of an investigation it is important to obtain insight into the electronic properties of the undoped neutral compounds and to determine the characteristics of hole injection processes and light emission in connection with luminescence phenomena. Most of the interesting chemistry and physics of conjugated polymers is associated with the details of the electronic structure at the valence and conduction band edges and, in this connection, various electron spectroscopies can be used as tools for diagnosis of the relevant electronic and geometric properties.…”

Section: Introductionmentioning

confidence: 99%

Resonant and nonresonant x-ray scattering spectra of some poly(phenylenevinylene)s

Guo

Magnuson

Såthe

et al. 1998

The Journal of Chemical Physics

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The electronic structure of some poly͑phenylenevinylene͒s have been investigated by resonant and nonresonant x-ray inelastic scattering spectroscopies. The nonresonant as well as all resonant spectra for each polymer demonstrate benzene-like features, indicating a local character of the x-ray emission in which the phenyl ring acts as a building block. Theoretical simulations of x-ray energies and intensities taking the repeat unit as a model molecule of the polymer agree with the experimental spectra fairly well. The edges of the occupied bands have been identified in the nonresonant spectra of each polymer. By subtracting the emission energy of the highest occupied molecular orbital in the nonresonant spectrum from the core excitation energy in the resonant spectrum an alternative way to determine the optical band gap is obtained. As for free benzene the outer band in the polymer spectra show a depletion of the emission going from the nonresonant to the resonant x-ray emission spectra. It is demonstrated that this transition, which is strictly symmetry forbidden for free benzene, becomes effectively forbidden in the polymer case as a result of strong interference effects, and it is argued that this is the general case for resonant x-ray emission of conjugated polymers as far as the frozen orbital approximation holds.

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New semiconductor device physics in polymer diodes and transistors

Cited by 668 publications

References 15 publications

Nobel Lecture: Semiconducting and metallic polymers: The fourth generation of polymeric materials

Nobel Lecture: Semiconducting and metallic polymers: The fourth generation of polymeric materials

Effect of Electron−Electron Interactions on the Charge Carrier Transitions intrans-Polyacetylene

Resonant and nonresonant x-ray scattering spectra of some poly(phenylenevinylene)s

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