Transient electroluminescence from PPV under strong voltage pulses

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

doi:10.1557/proc-488-15

Transient electroluminescence from PPV under strong voltage pulses

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

Weizmann Institute of Science, Israel

Research output: Contribution to journal › Conference 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 language	English
Pages (from-to)	15-20
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	488
DOIs	https://doi.org/10.1557/proc-488-15
Publication status	Published - 1997
Event	Proceedings of the 1997 MRS Fall Meeting - Boston, MA, USA Duration: Nov 30 1997 → Dec 4 1997

ASJC Scopus subject areas

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

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Savvate'ev, V., Pogreb, R., Davidov, D., Chayet, H., Neumann, R., & Avny, Y. (1997). Transient electroluminescence from PPV under strong voltage pulses. Materials Research Society Symposium - Proceedings, 488, 15-20. https://doi.org/10.1557/proc-488-15

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title = "Transient electroluminescence from PPV under strong voltage pulses",

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.",

author = "V. Savvate'ev and R. Pogreb and D. Davidov and H. Chayet and R. Neumann and Y. Avny",

year = "1997",

doi = "10.1557/proc-488-15",

language = "English",

volume = "488",

pages = "15--20",

journal = "Materials Research Society Symposium - Proceedings",

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note = "Proceedings of the 1997 MRS Fall Meeting ; Conference date: 30-11-1997 Through 04-12-1997",

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T1 - Transient electroluminescence from PPV under strong voltage pulses

AU - Savvate'ev, V.

AU - Pogreb, R.

AU - Davidov, D.

AU - Chayet, H.

AU - Neumann, R.

AU - Avny, Y.

PY - 1997

Y1 - 1997

N2 - 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.

AB - 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.

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