Electroluminescence-, conductivity-, 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

doi:10.1016/0379-6779(93)90940-X

Electroluminescence-, conductivity-, 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

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14 Scopus citations

Abstract

The strong electroluminescence (EL)-detected magnetic resonance of poly(p-phenylenevinylene) (PPV)-based light emitting diodes is compared to the conductivity (σ)-, photoconductivity (σph)- and photoluminescence (PL)-detected resonances. In contrast to the narrow PL-enhancing resonance assigned to polaron fusion into singlet excitons, strong EL- and σ-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 σ-detected resonances yield two distinct triplets. While both are σ-enhancing, one is EL-quenching. The nature of the two triplet states is discussed. © 1993.

Original language	English (US)
Journal	Synthetic Metals
Volume	55
Issue number	1
DOIs	https://doi.org/10.1016/0379-6779(93)90940-X
State	Published - Mar 15 1993
Externally published	Yes

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title = "Electroluminescence-, conductivity-, 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 (σ)-, photoconductivity (σph)- and photoluminescence (PL)-detected resonances. In contrast to the narrow PL-enhancing resonance assigned to polaron fusion into singlet excitons, strong EL- and σ-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 σ-detected resonances yield two distinct triplets. While both are σ-enhancing, one is EL-quenching. The nature of the two triplet states is discussed. {\textcopyright} 1993.",

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.}",

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doi = "10.1016/0379-6779(93)90940-X",

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T1 - Electroluminescence-, conductivity-, 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.

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

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 (σ)-, photoconductivity (σph)- and photoluminescence (PL)-detected resonances. In contrast to the narrow PL-enhancing resonance assigned to polaron fusion into singlet excitons, strong EL- and σ-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 σ-detected resonances yield two distinct triplets. While both are σ-enhancing, one is EL-quenching. The nature of the two triplet states is discussed. © 1993.

AB - The strong electroluminescence (EL)-detected magnetic resonance of poly(p-phenylenevinylene) (PPV)-based light emitting diodes is compared to the conductivity (σ)-, photoconductivity (σph)- and photoluminescence (PL)-detected resonances. In contrast to the narrow PL-enhancing resonance assigned to polaron fusion into singlet excitons, strong EL- and σ-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 σ-detected resonances yield two distinct triplets. While both are σ-enhancing, one is EL-quenching. The nature of the two triplet states is discussed. © 1993.

UR - https://linkinghub.elsevier.com/retrieve/pii/037967799390940X

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DO - 10.1016/0379-6779(93)90940-X

M3 - Article

SN - 0379-6779

VL - 55

JO - Synthetic Metals

JF - Synthetic Metals

IS - 1

ER -

Electroluminescence-, conductivity-, and photoconductivity-detected magnetic resonance study of poly(p-phenylenevinylene)-based light emitting diodes

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