Surface and bulk phenomena in conjugated polymers devices

F. Cacialli, J. S. Kim, T. M. Brown, J. Morgado, M. Granström, R. H. Friend, G. Gigli, R. Cingolani, L. Favaretto, G. Barbarella, Rusli Daik, W. J. Feast

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

We report a number of investigations into a variety of surface and bulk phenomena which are particularly relevant to the design of polymer optoelectronic devices, and in particular to light-emitting diodes (LEDs). First, we consider the surface properties of the most common anode, a thin layer of indium tin oxide (ITO), as modified by chemical and physical treatments. We show how the treatments affect the electrode workfunction, surface energy, morphology, sheet resistance and therefore, the LEDs efficiency and lifetime. We will also consider the effect of a conducting polymer hole-transport layer, such as poly(styrene sulfonate) doped poly(3,4-ethylene dioxythiophene) (PEDOT), incorporated between the ITO and the active layer. Secondly, we turn our attention to the optimisation of the photoluminescence (PL) efficiency, and report examples of how the polymer microstructure and possibly the engineering of disorder in a class of poly(p-phenylene vinylene)s and poly- or oligo-thiophenes can determine a significant increase of the PL efficiencies in the solid state.

Original languageEnglish
Pages (from-to)7-11
Number of pages5
JournalSynthetic Metals
Volume109
Issue number1
DOIs
Publication statusPublished - 1 Mar 2000
Externally publishedYes

Fingerprint

Conjugated polymers
Thiophenes
Thiophene
thiophenes
Tin oxides
indium oxides
Indium
tin oxides
Light emitting diodes
Photoluminescence
Polymers
polymers
light emitting diodes
photoluminescence
Styrene
Sheet resistance
Conducting polymers
conducting polymers
optoelectronic devices
sulfonates

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics

Cite this

Cacialli, F., Kim, J. S., Brown, T. M., Morgado, J., Granström, M., Friend, R. H., ... Feast, W. J. (2000). Surface and bulk phenomena in conjugated polymers devices. Synthetic Metals, 109(1), 7-11. https://doi.org/10.1016/S0379-6779(99)00188-5

Surface and bulk phenomena in conjugated polymers devices. / Cacialli, F.; Kim, J. S.; Brown, T. M.; Morgado, J.; Granström, M.; Friend, R. H.; Gigli, G.; Cingolani, R.; Favaretto, L.; Barbarella, G.; Daik, Rusli; Feast, W. J.

In: Synthetic Metals, Vol. 109, No. 1, 01.03.2000, p. 7-11.

Research output: Contribution to journalArticle

Cacialli, F, Kim, JS, Brown, TM, Morgado, J, Granström, M, Friend, RH, Gigli, G, Cingolani, R, Favaretto, L, Barbarella, G, Daik, R & Feast, WJ 2000, 'Surface and bulk phenomena in conjugated polymers devices', Synthetic Metals, vol. 109, no. 1, pp. 7-11. https://doi.org/10.1016/S0379-6779(99)00188-5
Cacialli F, Kim JS, Brown TM, Morgado J, Granström M, Friend RH et al. Surface and bulk phenomena in conjugated polymers devices. Synthetic Metals. 2000 Mar 1;109(1):7-11. https://doi.org/10.1016/S0379-6779(99)00188-5
Cacialli, F. ; Kim, J. S. ; Brown, T. M. ; Morgado, J. ; Granström, M. ; Friend, R. H. ; Gigli, G. ; Cingolani, R. ; Favaretto, L. ; Barbarella, G. ; Daik, Rusli ; Feast, W. J. / Surface and bulk phenomena in conjugated polymers devices. In: Synthetic Metals. 2000 ; Vol. 109, No. 1. pp. 7-11.
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