Recent development of organic light-emitting diode utilizing energy transfer from exciplex to phosphorescent emitter

2016 ◽  
Author(s):  
Satoshi Seo ◽  
Satoko Shitagaki ◽  
Nobuharu Ohsawa ◽  
Hideko Inoue ◽  
Kunihiko Suzuki ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light

Cohosts with efficient host-to-emitter energy transfer for stable blue phosphorescent organic light-emitting diodes

2021 ◽  
Author(s):  
Soo-Ghang Ihn ◽  
Eun Suk Kwon ◽  
Yongsik Jung ◽  
Jong Soo Kim ◽  
Sungho Nam ◽  
...  
Keyword(s):  
Energy Transfer ◽  
High Performance ◽  
Light Emitting Diode ◽  
Organic Light Emitting Diodes ◽  
Operating Voltage ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Low Efficiency ◽  
Blue Phosphorescent

We present a high-performance blue phosphorescent organic light-emitting diode exhibiting a low operating voltage (4.1 V), high external quantum efficiency (23.4%, at 500 cd m-2) with a low efficiency roll-off...

Direct Observation of Efficient Triplet–Triplet Energy Transfer in Phosphorescent Organic Light-Emitting Diode

2013 ◽  
Vol 6 (5) ◽  
pp. 052104 ◽  
Author(s):  
Hirohiko Fukagawa ◽  
Takahisa Shimizu ◽  
Yoshichika Osada ◽  
Taisuke Kamada ◽  
Yukihiro Kiribayashi ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Direct Observation ◽  
Light Emitting Diode ◽  
Triplet Energy ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Triplet Energy Transfer

scholarly journals Investigation of Energy Transfer in a Blend of electroluminescent Conducting Polymers

2011 ◽  
Vol 21 (4) ◽  
pp. 373
Author(s):  
Nguyen Nang Dinh ◽  
Nguyen Phuong Hoai Nam ◽  
Do Ngoc Chung
Keyword(s):  
Energy Transfer ◽  
Light Emitting Diode ◽  
Weight Fraction ◽  
Relative Content ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Current Voltage ◽  
Photonic Efficiency

With the aim of improving the photonic efficiency of an organic light emitting diode a blend of electroluminescent polymers, poly[9-vinylcarbarzole] (PVK) and poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) was prepared. The energy transfer in the blend was investigated through the comparison of absorption, photoluminescence (PL) and current-voltage (I-V) characteristics of the blend and standard polymers. The obtained results showed that energy transfer from PVK to MEH-PPV enable to form localized excited-state complexes (e.g. exciplexes) in MEH-PPV. The PL intensity of the blended polymers was enhanced as the relative content of MEH-PPV was increased, and particularly, the highest improved PL was observed for an weight fraction of 15 wt{\%} of MEH-PPV in PVK. Organic light emitting diodes made from these blends would exhibit a large photonic efficiency.

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