scholarly journals Magneto-Electroluminescence in ITO/MEH-PPV:PEO:LiCF3SO3/Al Polymer Light-Emitting Electrochemical Cells

Micromachines ◽  
2019 ◽  
Vol 10 (8) ◽  
pp. 546 ◽  
Author(s):  
Mingpeng Zhu ◽  
Xueting Yuan ◽  
Gang Ni
Keyword(s):  
Magnetic Field ◽  
Organic Light Emitting Diodes ◽  
Electrochemical Cells ◽  
Magnetic Field Effects ◽  
Light Emitting ◽  
Lorentzian Line ◽  
Field Effects ◽  
A Value ◽  
Organic Light ◽  
Current Voltage

Magnetic field effects (MFE) have been extensively studied in organic light emitting diodes because of their potential application in organic spintronics devices. However, only a few studies on MFE in organic light-emitting electrochemical cells (LEC) have been reported. In this paper, magnetic field effects on the electroluminescence of an LEC device with the structure of ITO/MEH-PPV:PEO:LiCF3SO3/Al were studied at various temperatures. The luminance–current–voltage curves of the device shows the typical bi-polar characteristics of LECs; positive magnetic electroluminescence (MEL) was observed with a value of about 2.5% (B = 42 mT, 250 K), showing a Lorentzian line shape. With a decrease in temperature, the MEL value and the threshold voltage increased accordingly, below the possible mechanism is discussed.

Peculiar magnetic field effects in organic light-emitting diodes with different metal cathodes

2012 ◽  
Vol 42 (5) ◽  
pp. 475-481
Author(s):  
QiaoMing ZHANG ◽  
YanLian LEI ◽  
YinTao YOU ◽  
ZuHong XIONG ◽  
Lin CHEN ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Magnetic Field Effects ◽  
Light Emitting ◽  
Field Effects ◽  
Organic Light

Magnetic Field Effects on Current, Electroluminescence and Photocurrent in Alq3 Organic Light Emitting Diodes

2006 ◽  
Vol 52 ◽  
pp. 53-61
Author(s):  
Govindarajan Veeraraghavan ◽  
Tho Duc Nguyen ◽  
Yu Gang Sheng ◽  
Omer Mermer ◽  
Markus Wohlgenannt
Keyword(s):  
Magnetic Field ◽  
Frequency Response ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Magnetic Field Effects ◽  
Magnetoresistance Effect ◽  
Light Emitting ◽  
Field Effects ◽  
Organic Light ◽  
Comparable Magnitude

We report on the experimental observation of large magnetoresistance in Alq3 organic light-emitting diodes (OLEDs). Very similar magnetic field effects (MFEs) of comparable magnitude are also observed in electroluminescence and photocurrent measurements. We also report on the frequency response of the magnetoresistance effect at frequencies below 100 kHz. To the best of our knowledge, the mechanism causing these MFE is currently not known.

Device-spectroscopy of magnetic field effects in several different polymer organic light-emitting diodes

2010 ◽  
Vol 160 (3-4) ◽  
pp. 320-324 ◽  
Author(s):  
T.D. Nguyen ◽  
Y. Sheng ◽  
J. Rybicki ◽  
G. Veeraraghavan ◽  
M. Wohlgenannt
Keyword(s):  
Magnetic Field ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Magnetic Field Effects ◽  
Light Emitting ◽  
Field Effects ◽  
Organic Light
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