Poly(p-phenylenevinylene) light-emitting diodes: Enhanced electroluminescent efficiency through charge carrier confinement

A. R. Brown; D. D.C. Bradley; J. H. Burroughes; R. H. Friend; N. C. Greenham; P. L. Burn; A. B. Holmes; A. Kraft

doi:10.1063/1.108094

Poly(p-phenylenevinylene) light-emitting diodes: Enhanced electroluminescent efficiency through charge carrier confinement

A. R. Brown, D. D.C. Bradley, J. H. Burroughes, R. H. Friend, N. C. Greenham, P. L. Burn, A. B. Holmes, A. Kraft

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

669 Scopus citations

Abstract

We have fabricated light-emitting diodes with poly(p-phenylenevinylene) as the emissive layer, and with an electron-transporting layer formed from a solid state dispersion of 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole in poly(methyl methacrylate), placed between this and the negative electrode. These structures show typically a tenfold improvement in efficiency in the low-voltage regime and an eightfold improvement in the high-voltage regime over devices without the electron-transporting layer. Typical efficiencies are about 0.8% photons/electron. We consider that the role of the electron-transport layer is to confine holes to the emissive layer.

Original language	English (US)
Journal	Applied Physics Letters
Volume	61
Issue number	23
DOIs	https://doi.org/10.1063/1.108094
State	Published - Dec 1 1992
Externally published	Yes

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title = "Poly(p-phenylenevinylene) light-emitting diodes: Enhanced electroluminescent efficiency through charge carrier confinement",

abstract = "We have fabricated light-emitting diodes with poly(p-phenylenevinylene) as the emissive layer, and with an electron-transporting layer formed from a solid state dispersion of 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole in poly(methyl methacrylate), placed between this and the negative electrode. These structures show typically a tenfold improvement in efficiency in the low-voltage regime and an eightfold improvement in the high-voltage regime over devices without the electron-transporting layer. Typical efficiencies are about 0.8% photons/electron. We consider that the role of the electron-transport layer is to confine holes to the emissive layer.",

author = "Brown, {A. R.} and Bradley, {D. D.C.} and Burroughes, {J. H.} and Friend, {R. H.} and Greenham, {N. C.} and Burn, {P. L.} and Holmes, {A. B.} and A. Kraft",

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T1 - Poly(p-phenylenevinylene) light-emitting diodes: Enhanced electroluminescent efficiency through charge carrier confinement

AU - Brown, A. R.

AU - Bradley, D. D.C.

AU - Burroughes, J. H.

AU - Friend, R. H.

AU - Greenham, N. C.

AU - Burn, P. L.

AU - Holmes, A. B.

AU - Kraft, A.

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

PY - 1992/12/1

Y1 - 1992/12/1

N2 - We have fabricated light-emitting diodes with poly(p-phenylenevinylene) as the emissive layer, and with an electron-transporting layer formed from a solid state dispersion of 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole in poly(methyl methacrylate), placed between this and the negative electrode. These structures show typically a tenfold improvement in efficiency in the low-voltage regime and an eightfold improvement in the high-voltage regime over devices without the electron-transporting layer. Typical efficiencies are about 0.8% photons/electron. We consider that the role of the electron-transport layer is to confine holes to the emissive layer.

AB - We have fabricated light-emitting diodes with poly(p-phenylenevinylene) as the emissive layer, and with an electron-transporting layer formed from a solid state dispersion of 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole in poly(methyl methacrylate), placed between this and the negative electrode. These structures show typically a tenfold improvement in efficiency in the low-voltage regime and an eightfold improvement in the high-voltage regime over devices without the electron-transporting layer. Typical efficiencies are about 0.8% photons/electron. We consider that the role of the electron-transport layer is to confine holes to the emissive layer.

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U2 - 10.1063/1.108094

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VL - 61

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 23

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Poly(p-phenylenevinylene) light-emitting diodes: Enhanced electroluminescent efficiency through charge carrier confinement

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