Spin effects on the luminescence yield of organic light emitting diodes

Alexander L. Burin; Mark A. Ratner

doi:10.1063/1.477236

Spin effects on the luminescence yield of organic light emitting diodes

Alexander L. Burin^*, Mark A. Ratner

^*Corresponding author for this work

Chemistry

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

53 Scopus citations

Abstract

The influence of the excitation spectrum on the quantum yield is investigated for organic molecules used in light emitting diodes (LEDs). The significance of the competition between radiative and nonradiative recombination channels is pointed out. A system of master equations is proposed to describe the relaxation of lower levels of the excited molecule, and the solution for the fluorescence yield is obtained assuming relatively weak vibronic coupling. The results are used to interpret the experimental data in oligothiophenes, and general approaches are proposed to increase the relative weight of the radiative decay channel and correspondingly enhance the working properties of organic light emitting diodes. In particular, the fluorescence quantum yield can exceed the simple estimate of 0.25.

Original language	English (US)
Pages (from-to)	6092-6102
Number of pages	11
Journal	Journal of Chemical Physics
Volume	109
Issue number	14
DOIs	https://doi.org/10.1063/1.477236
State	Published - 1998

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

Access to Document

10.1063/1.477236

Fingerprint Dive into the research topics of 'Spin effects on the luminescence yield of organic light emitting diodes'. Together they form a unique fingerprint.

Cite this

@article{825a7e4c6a0d433e91bc6e8f323842db,

title = "Spin effects on the luminescence yield of organic light emitting diodes",

abstract = "The influence of the excitation spectrum on the quantum yield is investigated for organic molecules used in light emitting diodes (LEDs). The significance of the competition between radiative and nonradiative recombination channels is pointed out. A system of master equations is proposed to describe the relaxation of lower levels of the excited molecule, and the solution for the fluorescence yield is obtained assuming relatively weak vibronic coupling. The results are used to interpret the experimental data in oligothiophenes, and general approaches are proposed to increase the relative weight of the radiative decay channel and correspondingly enhance the working properties of organic light emitting diodes. In particular, the fluorescence quantum yield can exceed the simple estimate of 0.25.",

author = "Burin, {Alexander L.} and Ratner, {Mark A.}",

year = "1998",

doi = "10.1063/1.477236",

language = "English (US)",

volume = "109",

pages = "6092--6102",

journal = "Journal of Chemical Physics",

issn = "0021-9606",

publisher = "American Institute of Physics Publising LLC",

number = "14",

}

TY - JOUR

T1 - Spin effects on the luminescence yield of organic light emitting diodes

AU - Burin, Alexander L.

AU - Ratner, Mark A.

PY - 1998

Y1 - 1998

N2 - The influence of the excitation spectrum on the quantum yield is investigated for organic molecules used in light emitting diodes (LEDs). The significance of the competition between radiative and nonradiative recombination channels is pointed out. A system of master equations is proposed to describe the relaxation of lower levels of the excited molecule, and the solution for the fluorescence yield is obtained assuming relatively weak vibronic coupling. The results are used to interpret the experimental data in oligothiophenes, and general approaches are proposed to increase the relative weight of the radiative decay channel and correspondingly enhance the working properties of organic light emitting diodes. In particular, the fluorescence quantum yield can exceed the simple estimate of 0.25.

AB - The influence of the excitation spectrum on the quantum yield is investigated for organic molecules used in light emitting diodes (LEDs). The significance of the competition between radiative and nonradiative recombination channels is pointed out. A system of master equations is proposed to describe the relaxation of lower levels of the excited molecule, and the solution for the fluorescence yield is obtained assuming relatively weak vibronic coupling. The results are used to interpret the experimental data in oligothiophenes, and general approaches are proposed to increase the relative weight of the radiative decay channel and correspondingly enhance the working properties of organic light emitting diodes. In particular, the fluorescence quantum yield can exceed the simple estimate of 0.25.

UR - http://www.scopus.com/inward/record.url?scp=0032497454&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032497454&partnerID=8YFLogxK

U2 - 10.1063/1.477236

DO - 10.1063/1.477236

M3 - Article

AN - SCOPUS:0032497454

VL - 109

SP - 6092

EP - 6102

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

IS - 14

ER -

Spin effects on the luminescence yield of organic light emitting diodes

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Cite this