In situ measurement of the internal luminescence quantum efficiency in organic light-emitting diodes

Michael Flämmich; Malte Christian Gather; Norbert Danzg; Dirk Michaelis; Klaus Meerholz

doi:10.1063/1.3279144

In situ measurement of the internal luminescence quantum efficiency in organic light-emitting diodes

Michael Flämmich, Malte Christian Gather, Norbert Danzg, Dirk Michaelis, Klaus Meerholz

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

Abstract

The internal luminescencequantum efficiencyqq is one limiting factor for the performance of organic light-emitting diodes.Photoluminescencemeasurements are frequently used to estimate qq but these neglect effects of the local environment of the emissive sites and the electrical excitation mechanism. We present a method for the in situmeasurement of qq under electrical operation. The current efficiency of several devices with different emitter-cathode distances is quantitatively compared. Precise optical simulation allows determining qq without additional assumptions.

Original language	English
Pages (from-to)	263306
Number of pages	3
Journal	Applied Physics Letters
Volume	95
Issue number	26
DOIs	https://doi.org/10.1063/1.3279144
Publication status	Published - 29 Dec 2009

Keywords

Organic light emitting diodes
Laser efficiency
CATHODES
LUMINESCENCE
Quantum measurement theory

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10.1063/1.3279144

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@article{dd37eb5d66814fccac5d6e3cbce050bc,

title = "In situ measurement of the internal luminescence quantum efficiency in organic light-emitting diodes",

abstract = "The internal luminescencequantum efficiencyqq is one limiting factor for the performance of organic light-emitting diodes.Photoluminescencemeasurements are frequently used to estimate qq but these neglect effects of the local environment of the emissive sites and the electrical excitation mechanism. We present a method for the in situmeasurement of qq under electrical operation. The current efficiency of several devices with different emitter-cathode distances is quantitatively compared. Precise optical simulation allows determining qq without additional assumptions.",

keywords = "Organic light emitting diodes, Laser efficiency, CATHODES, LUMINESCENCE, Quantum measurement theory",

author = "Michael Fl{\"a}mmich and Gather, {Malte Christian} and Norbert Danzg and Dirk Michaelis and Klaus Meerholz",

note = "The authors acknowledge financial support from the German Ministry of Science and Education (BMBF) through the HOBBIT-project (Grant Nos. 13N8951 and 13N8952).",

year = "2009",

month = dec,

day = "29",

doi = "10.1063/1.3279144",

language = "English",

volume = "95",

pages = "263306",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "26",

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TY - JOUR

T1 - In situ measurement of the internal luminescence quantum efficiency in organic light-emitting diodes

AU - Flämmich, Michael

AU - Gather, Malte Christian

AU - Danzg, Norbert

AU - Michaelis, Dirk

AU - Meerholz, Klaus

N1 - The authors acknowledge financial support from the German Ministry of Science and Education (BMBF) through the HOBBIT-project (Grant Nos. 13N8951 and 13N8952).

PY - 2009/12/29

Y1 - 2009/12/29

N2 - The internal luminescencequantum efficiencyqq is one limiting factor for the performance of organic light-emitting diodes.Photoluminescencemeasurements are frequently used to estimate qq but these neglect effects of the local environment of the emissive sites and the electrical excitation mechanism. We present a method for the in situmeasurement of qq under electrical operation. The current efficiency of several devices with different emitter-cathode distances is quantitatively compared. Precise optical simulation allows determining qq without additional assumptions.

AB - The internal luminescencequantum efficiencyqq is one limiting factor for the performance of organic light-emitting diodes.Photoluminescencemeasurements are frequently used to estimate qq but these neglect effects of the local environment of the emissive sites and the electrical excitation mechanism. We present a method for the in situmeasurement of qq under electrical operation. The current efficiency of several devices with different emitter-cathode distances is quantitatively compared. Precise optical simulation allows determining qq without additional assumptions.

KW - Organic light emitting diodes

KW - Laser efficiency

KW - CATHODES

KW - LUMINESCENCE

KW - Quantum measurement theory

U2 - 10.1063/1.3279144

DO - 10.1063/1.3279144

M3 - Article

SN - 0003-6951

VL - 95

SP - 263306

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 26

ER -

In situ measurement of the internal luminescence quantum efficiency in organic light-emitting diodes

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Keywords

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