Photoluminescence lifetimes and efficiencies of PPV-type materials

Christian M. Heller; Ian H. Campbell; Bernhard K. Laurich; Darryl L. Smith; Donal D.C. Bradley; Paul L. Burn; John P. Ferraris; Klaus Mullen

Photoluminescence lifetimes and efficiencies of PPV-type materials

Christian M. Heller, Ian H. Campbell, Bernhard K. Laurich, Darryl L. Smith, Donal D.C. Bradley, Paul L. Burn, John P. Ferraris, Klaus Mullen

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

1 Scopus citations

Abstract

High photoluminescence (PL) efficiencies are desired to increase the brightness and operating lifetimes of organic light-emitting diodes. We present data on the transient PL-decay of PPV-type oligomers composed of 3 to 5 phenylene rings in blends and as pure films. The variation of the PL-decay with temperature, emission energy, and excitation energy is studied, and the changes in lifetime are correlated with the changes in relative efficiency. The results are compared with those of thin films of PPV. In blends the PL-decay is essentially independent of the number of phenylene rings of the oligomer. The temperature dependence of the oligomer blends is smaller than in the case of polymer films. In the oligomer blends, the PL spectrum changes with excitation energy and emission energy, indicating an inhomogeneous distribution of molecular sites.

Original language	English (US)
Journal	International SAMPE Technical Conference
Volume	27
State	Published - Dec 1 1995
Externally published	Yes

Cite this

@article{e243558e5c4d4060b492db435f80df55,

title = "Photoluminescence lifetimes and efficiencies of PPV-type materials",

abstract = "High photoluminescence (PL) efficiencies are desired to increase the brightness and operating lifetimes of organic light-emitting diodes. We present data on the transient PL-decay of PPV-type oligomers composed of 3 to 5 phenylene rings in blends and as pure films. The variation of the PL-decay with temperature, emission energy, and excitation energy is studied, and the changes in lifetime are correlated with the changes in relative efficiency. The results are compared with those of thin films of PPV. In blends the PL-decay is essentially independent of the number of phenylene rings of the oligomer. The temperature dependence of the oligomer blends is smaller than in the case of polymer films. In the oligomer blends, the PL spectrum changes with excitation energy and emission energy, indicating an inhomogeneous distribution of molecular sites.",

author = "Heller, {Christian M.} and Campbell, {Ian H.} and Laurich, {Bernhard K.} and Smith, {Darryl L.} and Bradley, {Donal D.C.} and Burn, {Paul L.} and Ferraris, {John P.} and Klaus Mullen",

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year = "1995",

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day = "1",

language = "English (US)",

volume = "27",

journal = "International SAMPE Technical Conference",

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TY - JOUR

T1 - Photoluminescence lifetimes and efficiencies of PPV-type materials

AU - Heller, Christian M.

AU - Campbell, Ian H.

AU - Laurich, Bernhard K.

AU - Smith, Darryl L.

AU - Bradley, Donal D.C.

AU - Burn, Paul L.

AU - Ferraris, John P.

AU - Mullen, Klaus

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

PY - 1995/12/1

Y1 - 1995/12/1

N2 - High photoluminescence (PL) efficiencies are desired to increase the brightness and operating lifetimes of organic light-emitting diodes. We present data on the transient PL-decay of PPV-type oligomers composed of 3 to 5 phenylene rings in blends and as pure films. The variation of the PL-decay with temperature, emission energy, and excitation energy is studied, and the changes in lifetime are correlated with the changes in relative efficiency. The results are compared with those of thin films of PPV. In blends the PL-decay is essentially independent of the number of phenylene rings of the oligomer. The temperature dependence of the oligomer blends is smaller than in the case of polymer films. In the oligomer blends, the PL spectrum changes with excitation energy and emission energy, indicating an inhomogeneous distribution of molecular sites.

AB - High photoluminescence (PL) efficiencies are desired to increase the brightness and operating lifetimes of organic light-emitting diodes. We present data on the transient PL-decay of PPV-type oligomers composed of 3 to 5 phenylene rings in blends and as pure films. The variation of the PL-decay with temperature, emission energy, and excitation energy is studied, and the changes in lifetime are correlated with the changes in relative efficiency. The results are compared with those of thin films of PPV. In blends the PL-decay is essentially independent of the number of phenylene rings of the oligomer. The temperature dependence of the oligomer blends is smaller than in the case of polymer films. In the oligomer blends, the PL spectrum changes with excitation energy and emission energy, indicating an inhomogeneous distribution of molecular sites.

UR - http://www.scopus.com/inward/record.url?scp=0029458098&partnerID=8YFLogxK

M3 - Article

VL - 27

JO - International SAMPE Technical Conference

JF - International SAMPE Technical Conference

ER -

Photoluminescence lifetimes and efficiencies of PPV-type materials

Abstract

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