Lamellar Organic Light-Emitting Crystals Exhibiting Spectral Gain and 3.6% External Quantum Efficiency in Transistors

2021 ◽  
pp. 428-432
Author(s):  
Liqun Liu ◽  
Chang Cai ◽  
Zejian Zhang ◽  
Shitong Zhang ◽  
Jian Deng ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Light Emitting ◽  
Organic Light

An oligocarbazole-encapsulated heteroleptic red iridium complex for solution-processed nondoped phosphorescent organic light-emitting diodes with over 10% external quantum efficiency

2017 ◽  
Vol 5 (23) ◽  
pp. 5749-5756 ◽  
Author(s):  
Lingcheng Chen ◽  
Shumeng Wang ◽  
Zhimin Yan ◽  
Junqiao Ding ◽  
Lixiang Wang
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Iridium Complex ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light

By fully encapsulating the heteroleptic red Ir complex with carbazole dendrons, solution-processed nondoped electrophosphorescent devices reveal over 10% EQE.

scholarly journals An external quantum efficiency of >20% from solution-processed poly(dendrimer) organic light-emitting diodes

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Fatemeh Maasoumi ◽  
Ross D. Jansen-van Vuuren ◽  
Paul E. Shaw ◽  
Emma V. Puttock ◽  
Ravi Chandra Raju Nagiri ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light

scholarly journals Organic Light-Emitting Diodes with 30% External Quantum Efficiency Based on a Horizontally Oriented Emitter

2013 ◽  
Vol 23 (31) ◽  
pp. 3896-3900 ◽  
Author(s):  
Sei-Yong Kim ◽  
Won-Ik Jeong ◽  
Christian Mayr ◽  
Young-Seo Park ◽  
Kwon-Hyeon Kim ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light

High-performance narrow spectrum green phosphorescent top-emitting organic light-emitting devices with external quantum efficiency up to 38%

2021 ◽  
Author(s):  
Xiaokang Li ◽  
Wenxing Liu ◽  
Kai Chen ◽  
Ruixia Wu ◽  
Guo-Jun Liu ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
High Performance ◽  
Cavity Length ◽  
Strong Dependence ◽  
Emission Peak ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Micro Cavity

Abstract In this work, we have experimentally demonstrated the efficacy of micro-cavity effect in realizing high-performance top-emitting organic light-emitting diodes (TEOLEDs). By optimizing the thickness of top Yb/Ag electrode and cavity length, highly efficient green TEOLED with external quantum efficiency as high as 38% was achieved. A strong dependence of electroluminescent (EL) performances and spectrum on cavity length was observed, and there was also a significant angle dependence of EL spectrum. Ultimately, ultra-high current efficiency up to 161.17 cd/A (3.2 V) was obtained by the device with emission peak at 552 nm, which is 35 nm longer than the intrinsic emission peak (517 nm) of utilized green emitter. Interestingly, this device displayed narrow emission with full-width at half-maximum (FWHM) of less than 20 nm, which was obtained by increasing the Ag layer thickness.

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