Electromodulation studies of a polyfluorene light-emitting diode

Paul A. Lane; Paul J. Brewer; Donal D.C. Bradley; Andrew De Mello; John C. De Mello

doi:10.1117/12.563257

Electromodulation studies of a polyfluorene light-emitting diode

Paul A. Lane, Paul J. Brewer, Donal D.C. Bradley, Andrew De Mello, John C. De Mello

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

Abstract

Electromodulation (EM) spectroscopy has been used to probe the electric field distribution in polymer light-emitting diodes. Below the turn-on bias, the EM spectrum is dominated by electroabsorption of the emissive layer. The electroabsorption signal vanishes at the turn-on bias. Under operation, the EM spectrum is due to by excited state absorption from injected charge and bleaching of the ground state absorption of the emissive layer. We conclude that the internal electric field is effectively screened by accumulation of trapped electrons at the anode.

Original language	English (US)
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
DOIs	https://doi.org/10.1117/12.563257
State	Published - Dec 1 2004
Externally published	Yes

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title = "Electromodulation studies of a polyfluorene light-emitting diode",

abstract = "Electromodulation (EM) spectroscopy has been used to probe the electric field distribution in polymer light-emitting diodes. Below the turn-on bias, the EM spectrum is dominated by electroabsorption of the emissive layer. The electroabsorption signal vanishes at the turn-on bias. Under operation, the EM spectrum is due to by excited state absorption from injected charge and bleaching of the ground state absorption of the emissive layer. We conclude that the internal electric field is effectively screened by accumulation of trapped electrons at the anode.",

author = "Lane, {Paul A.} and Brewer, {Paul J.} and Bradley, {Donal D.C.} and {De Mello}, Andrew and {De Mello}, {John C.}",

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T1 - Electromodulation studies of a polyfluorene light-emitting diode

AU - Lane, Paul A.

AU - Brewer, Paul J.

AU - Bradley, Donal D.C.

AU - De Mello, Andrew

AU - De Mello, John C.

N1 - Generated from Scopus record by KAUST IRTS on 2019-11-27

PY - 2004/12/1

Y1 - 2004/12/1

N2 - Electromodulation (EM) spectroscopy has been used to probe the electric field distribution in polymer light-emitting diodes. Below the turn-on bias, the EM spectrum is dominated by electroabsorption of the emissive layer. The electroabsorption signal vanishes at the turn-on bias. Under operation, the EM spectrum is due to by excited state absorption from injected charge and bleaching of the ground state absorption of the emissive layer. We conclude that the internal electric field is effectively screened by accumulation of trapped electrons at the anode.

AB - Electromodulation (EM) spectroscopy has been used to probe the electric field distribution in polymer light-emitting diodes. Below the turn-on bias, the EM spectrum is dominated by electroabsorption of the emissive layer. The electroabsorption signal vanishes at the turn-on bias. Under operation, the EM spectrum is due to by excited state absorption from injected charge and bleaching of the ground state absorption of the emissive layer. We conclude that the internal electric field is effectively screened by accumulation of trapped electrons at the anode.

UR - http://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.563257

UR - http://www.scopus.com/inward/record.url?scp=13444259809&partnerID=8YFLogxK

U2 - 10.1117/12.563257

DO - 10.1117/12.563257

M3 - Conference contribution

BT - Proceedings of SPIE - The International Society for Optical Engineering

ER -

Electromodulation studies of a polyfluorene light-emitting diode

Abstract

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