Transient electroluminescence from PPV under strong voltage pulses

V. Savvate'ev, R. Pogreb, D. Davidov, H. Chayet, R. Neumann, Y. Avny

Research output: Contribution to journalConference article

Abstract

We have studied the transient electroluminescence (EL) from poly(phenylenevinylene), PPV, as a function of electric field under strong electric pulses up to fields of E ≈ 109 V/m with emphasis on (a) the time delay, τ, between the electric pulse and the onset of the EL emission pulse and (b) the EL intensity as a function of the field. A monotonic decrease of τ with increasing E is explained by an increase of the carriers mobility according to Frenkel-Poole model. The EL intensity at high fields is proportional to E3 suggesting that the contacts at the polymer-metal electrode interfaces are practically ohmic. We demonstrate significantly improved brightness, peak power and lifetimes for polymer-based light emitting diodes working under such a pulsed mode.

Original languageEnglish
Pages (from-to)15-20
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume488
DOIs
Publication statusPublished - 1997
EventProceedings of the 1997 MRS Fall Meeting - Boston, MA, USA
Duration: Nov 30 1997Dec 4 1997

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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