ELECTROLUMINESCENCE-DETECTED, CONDUCTIVITY-DETECTED, AND PHOTOCONDUCTIVITY-DETECTED MAGNETIC-RESONANCE STUDY OF POLY(P-PHENYLENEVINYLENE)-BASED LIGHT-EMITTING-DIODES

L S  SWANSON; J  SHINAR; A R  BROWN; D D C  BRADLEY; R H  FRIEND; P L  BURN; A  KRAFT; A B  HOLMES

ELECTROLUMINESCENCE-DETECTED, CONDUCTIVITY-DETECTED, AND PHOTOCONDUCTIVITY-DETECTED MAGNETIC-RESONANCE STUDY OF POLY(P-PHENYLENEVINYLENE)-BASED LIGHT-EMITTING-DIODES

L S SWANSON, J SHINAR, A R BROWN, D D C BRADLEY, R H FRIEND, P L BURN, A KRAFT, A B HOLMES

Research output: Contribution to journal › Article › peer-review

Abstract

The strong electroluminescence (EL)-detected magnetic resonance of poly(p-phenylenevinylene) (PPV)-based light emitting diodes is compared to the conductivity (sigma)-, photoconductivity (sigma(ph))- and photoluminescence (PL)-detected resonances. In contrast to the narrow PL-enhancing resonance assigned to polaron fusion into singlet excitons, strong EL- and sigma-quenching resonances are attributed to the spin-dependent polaron-to-bipolaron decay. While the half-field PL-detected resonance reveals only one triplet exciton resonance, believed to result from triplet-triplet fusion into singlets, the half-field EL- and sigma-detected resonances yield two distinct triplets. While both are sigma-enhancing, one is EL-quenching. The nature of the two triplet states is discussed.

Original language	English
Pages (from-to)	241-248
Number of pages	8
Journal	Synthetic Metals
Volume	55
Issue number	1
Publication status	Published - 15 Mar 1993

Cite this

@article{c26855c7ddaa4495b9917d9c079f3aca,

title = "ELECTROLUMINESCENCE-DETECTED, CONDUCTIVITY-DETECTED, AND PHOTOCONDUCTIVITY-DETECTED MAGNETIC-RESONANCE STUDY OF POLY(P-PHENYLENEVINYLENE)-BASED LIGHT-EMITTING-DIODES",

abstract = "The strong electroluminescence (EL)-detected magnetic resonance of poly(p-phenylenevinylene) (PPV)-based light emitting diodes is compared to the conductivity (sigma)-, photoconductivity (sigma(ph))- and photoluminescence (PL)-detected resonances. In contrast to the narrow PL-enhancing resonance assigned to polaron fusion into singlet excitons, strong EL- and sigma-quenching resonances are attributed to the spin-dependent polaron-to-bipolaron decay. While the half-field PL-detected resonance reveals only one triplet exciton resonance, believed to result from triplet-triplet fusion into singlets, the half-field EL- and sigma-detected resonances yield two distinct triplets. While both are sigma-enhancing, one is EL-quenching. The nature of the two triplet states is discussed.",

author = "SWANSON, {L S} and J SHINAR and BROWN, {A R} and BRADLEY, {D D C} and FRIEND, {R H} and BURN, {P L} and A KRAFT and HOLMES, {A B}",

year = "1993",

month = mar,

day = "15",

language = "English",

volume = "55",

pages = "241--248",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier",

number = "1",

}

TY - JOUR

T1 - ELECTROLUMINESCENCE-DETECTED, CONDUCTIVITY-DETECTED, AND PHOTOCONDUCTIVITY-DETECTED MAGNETIC-RESONANCE STUDY OF POLY(P-PHENYLENEVINYLENE)-BASED LIGHT-EMITTING-DIODES

AU - SWANSON, L S

AU - SHINAR, J

AU - BROWN, A R

AU - BRADLEY, D D C

AU - FRIEND, R H

AU - BURN, P L

AU - KRAFT, A

AU - HOLMES, A B

PY - 1993/3/15

Y1 - 1993/3/15

N2 - The strong electroluminescence (EL)-detected magnetic resonance of poly(p-phenylenevinylene) (PPV)-based light emitting diodes is compared to the conductivity (sigma)-, photoconductivity (sigma(ph))- and photoluminescence (PL)-detected resonances. In contrast to the narrow PL-enhancing resonance assigned to polaron fusion into singlet excitons, strong EL- and sigma-quenching resonances are attributed to the spin-dependent polaron-to-bipolaron decay. While the half-field PL-detected resonance reveals only one triplet exciton resonance, believed to result from triplet-triplet fusion into singlets, the half-field EL- and sigma-detected resonances yield two distinct triplets. While both are sigma-enhancing, one is EL-quenching. The nature of the two triplet states is discussed.

AB - The strong electroluminescence (EL)-detected magnetic resonance of poly(p-phenylenevinylene) (PPV)-based light emitting diodes is compared to the conductivity (sigma)-, photoconductivity (sigma(ph))- and photoluminescence (PL)-detected resonances. In contrast to the narrow PL-enhancing resonance assigned to polaron fusion into singlet excitons, strong EL- and sigma-quenching resonances are attributed to the spin-dependent polaron-to-bipolaron decay. While the half-field PL-detected resonance reveals only one triplet exciton resonance, believed to result from triplet-triplet fusion into singlets, the half-field EL- and sigma-detected resonances yield two distinct triplets. While both are sigma-enhancing, one is EL-quenching. The nature of the two triplet states is discussed.

M3 - Article

SN - 0379-6779

VL - 55

SP - 241

EP - 248

JO - Synthetic Metals

JF - Synthetic Metals

IS - 1

ER -

ELECTROLUMINESCENCE-DETECTED, CONDUCTIVITY-DETECTED, AND PHOTOCONDUCTIVITY-DETECTED MAGNETIC-RESONANCE STUDY OF POLY(P-PHENYLENEVINYLENE)-BASED LIGHT-EMITTING-DIODES

Abstract

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