Transient electroluminescence from PPV under strong voltage pulses

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

Transient electroluminescence from PPV under strong voltage pulses

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

Weizmann Institute of Science, Israel

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	Materials Research Society Symposium - Proceedings
Editors	J.R. Reynolds, A.K.Y. Jen, M.F. Rubner, L.Y. Chiang, L.R. Dalton
Publisher	MRS
Pages	15-20
Number of pages	6
Volume	488
Publication status	Published - 1997
Event	Proceedings of the 1997 MRS Fall Meeting - Boston, MA, USA Duration: Dec 1 1997 → Dec 5 1997

Other

Other	Proceedings of the 1997 MRS Fall Meeting
City	Boston, MA, USA
Period	12/1/97 → 12/5/97

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials

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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. 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.

Transient electroluminescence from PPV under strong voltage pulses. / Savvate'ev, V.; Pogreb, R.; Davidov, D.; Chayet, H.; Neumann, Ronny; Avny, Y.

Materials Research Society Symposium - Proceedings. ed. / J.R. Reynolds; A.K.Y. Jen; M.F. Rubner; L.Y. Chiang; L.R. Dalton. Vol. 488 MRS, 1997. p. 15-20.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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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.",

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AU - Savvate'ev, V.

AU - Pogreb, R.

AU - Davidov, D.

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AU - Neumann, Ronny

AU - Avny, Y.

PY - 1997

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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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