Transient electroluminescence from PPV under strong voltage pulses

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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
Title of host publicationMaterials Research Society Symposium - Proceedings
EditorsJ.R. Reynolds, A.K.Y. Jen, M.F. Rubner, L.Y. Chiang, L.R. Dalton
PublisherMRS
Pages15-20
Number of pages6
Volume488
Publication statusPublished - 1997
EventProceedings of the 1997 MRS Fall Meeting - Boston, MA, USA
Duration: Dec 1 1997Dec 5 1997

Other

OtherProceedings of the 1997 MRS Fall Meeting
CityBoston, MA, USA
Period12/1/9712/5/97

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Savvate'ev, V., Pogreb, R., Davidov, D., Chayet, H., Neumann, R., & Avny, Y. (1997). Transient electroluminescence from PPV under strong voltage pulses. In J. R. Reynolds, A. K. Y. Jen, M. F. Rubner, L. Y. Chiang, & L. R. Dalton (Eds.), Materials Research Society Symposium - Proceedings (Vol. 488, pp. 15-20). MRS.