Modulated Infrared Electroluminescence From Organic Light-Emitting Diodes

Modulated infrared electroluminescence from organic light-emitting diodes (OLEDs) based on rare earth complexes (tris-dibenzoylmethanato-mono-bathophenanthroline) erbium or neodymium were fabricated. The modulations were realized by varying the device configuration and by varying an applied forward...

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Bibliographic Details
Published in:Journal of lightwave technology 2009-06, Vol.27 (11), p.1522-1526
Main Authors: Faxin Zang, Tze-Chien Sum, Furong Zhu, Zi-Ruo Hong, Xiaoyan Sun, Wen Lian Li, Huan, C.H.A.
Format: Article
Language:English
Subjects:
Applied sciences
Bias
Biological materials
Circuits
Electroluminescence
Electronics
Erbium
Exact sciences and technology
Information, signal and communications theory
Infrared
Modulated infrared electroluminescence
Modulation
Modulation, demodulation
Neodymium
Optical materials
Optical modulation
Optoelectronic devices
organic light emitting devices
Organic light emitting diodes
Rare earth metals
rare-earth complexes and recombination zone
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Semiconductor materials
Signal and communications theory
Telecommunications and information theory
Wavelength division multiplexing
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Summary:Modulated infrared electroluminescence from organic light-emitting diodes (OLEDs) based on rare earth complexes (tris-dibenzoylmethanato-mono-bathophenanthroline) erbium or neodymium were fabricated. The modulations were realized by varying the device configuration and by varying an applied forward bias at room temperature. We found that the intensity of EL peak at 1.54 mum was reduced by a factor of almost 20 times as the Nd complex layer thickness in the OLEDs was increased from 1 nm to 5 nm. The intensity ratio of the 1.54 mum (Nd) to 1.06 mum (Er) decreases from 0.82 to 0.53 as the forward bias increases from 6.5 V to 18 V. The effects of the modulation of these IR emissions were also discussed.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2009.2013872