External Magnetic Field‐Driven Ambidextrous Circularly Polarized Electroluminescence from Organic Light‐Emitting Diodes Containing Racemic Cyclometalated Iridium(III) Complexes

ChemPhotoChem ◽  
2021 ◽  
Author(s):  
Kengo Hara ◽  
Ami Morimoto ◽  
Kana Matsudaira ◽  
Satoko Suzuki ◽  
Shigeyuki Yagi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Circularly Polarized ◽  
Organic Light

Configurationally stable helical tetradentate Pt(II) complexes for organic light-emitting diodes with circularly polarized electroluminescence

2021 ◽  
Author(s):  
Li Yuan ◽  
Ting-Ting Liu ◽  
Meng-Xi Mao ◽  
Xu-Feng Luo ◽  
You-Xuan Zheng
Keyword(s):  
Steric Hindrance ◽  
Light Emitting Diodes ◽  
Helical Structure ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Circularly Polarized ◽  
Organic Light

In this study, three pairs of tetradentate Pt(II) enantiomers with helical structure are reported. By changing a six-membered to five-membered metallocycle and replacing quinoline by benzo[h]quinoline with greater steric hindrance,...

Non-doped and doped circularly polarized organic light-emitting diodes with high performances based on chiral octahydro-binaphthyl delayed fluorescent luminophores

2019 ◽  
Vol 7 (23) ◽  
pp. 7045-7052 ◽  
Author(s):  
Zheng-Guang Wu ◽  
Zhi-Ping Yan ◽  
Xu-Feng Luo ◽  
Li Yuan ◽  
Wei-Qiu Liang ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Circularly Polarized ◽  
Organic Light ◽  
Fluorescent Materials ◽  
Low Efficiency

Two circularly polarized delayed fluorescent materials were applied in non-doped and doped CP-OLEDs with |gEL| up to 2.9 × 10−3, an EQEmax of 12.4% and a low efficiency roll-off.

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

Origin of magnetic field effect enhancement by electrical stress in organic light emitting diodes

2009 ◽  
Vol 105 (12) ◽  
pp. 123706 ◽  
Author(s):  
S. A. Bagnich ◽  
U. Niedermeier ◽  
C. Melzer ◽  
W. Sarfert ◽  
H. von Seggern
Keyword(s):  
Magnetic Field ◽  
Field Effect ◽  
Light Emitting Diodes ◽  
Magnetic Field Effect ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Electrical Stress ◽  
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.

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