Efficient red phosphorescent Ir(iii) complexes based on rigid ligands with high external quantum efficiency and low efficiency roll-off

2020 ◽  
Vol 8 (18) ◽  
pp. 6168-6175 ◽  
Author(s):  
Sheng-Nan Liu ◽  
Kai-Ning Tong ◽  
Yue Zhao ◽  
Jin-Feng Cheng ◽  
Man-Keung Fung ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Highly Efficient ◽  
Low Efficiency

Two highly efficient red phosphorescent Ir(iii) complexes were prepared by the introduction of rigid cyclometalating ligands.

Highly efficient yellow electroluminescence of iridium complexes with good electron mobility

2018 ◽  
Vol 2 (7) ◽  
pp. 1284-1290 ◽  
Author(s):  
Hua-Bo Han ◽  
Xiao-Feng Ma ◽  
Zheng-Guang Wu ◽  
You-Xuan Zheng
Keyword(s):  
Current Efficiency ◽  
Quantum Efficiency ◽  
Electron Mobility ◽  
External Quantum Efficiency ◽  
Iridium Complexes ◽  
Highly Efficient ◽  
Maximum Current ◽  
Low Efficiency

Herein, two efficient yellow iridium complexes with good electron mobility were applied in OLEDs, showing a maximum current efficiency of 106.66 cd A−1 and an external quantum efficiency of 29.7% with low efficiency roll-off.

Photoluminescence and electroluminescence of cationic PtAu2 heterotrinuclear complexes with aromatic acetylides

2017 ◽  
Vol 46 (3) ◽  
pp. 865-874 ◽  
Author(s):  
Li-Yi Zhang ◽  
Liang-Jin Xu ◽  
Jin-Yun Wang ◽  
Xian-Chong Zeng ◽  
Zhong-Ning Chen
Keyword(s):  
Current Efficiency ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Solution Process ◽  
Heterometallic Complexes ◽  
Highly Efficient

Cationic PtAu2 heterometallic complexes are used as phosphorescent emitters for highly efficient electroluminescent OLEDs through a solution process with the highest current efficiency of 51.7 cd A−1 and external quantum efficiency of 14.5%.

Pyrene based materials for exceptionally deep blue OLEDs

2014 ◽  
Vol 2 (43) ◽  
pp. 9083-9086 ◽  
Author(s):  
Dennis Chercka ◽  
Seung-Jun Yoo ◽  
Martin Baumgarten ◽  
Jang-Joo Kim ◽  
Klaus Müllen
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Host System ◽  
Highly Efficient ◽  
Deep Blue ◽  
Blue Photoluminescence

A 2,7-functionalized pyrene-based emitter for highly efficient OLEDs has been developed. It offers an exceptional deep blue photoluminescence (CIE: x = 0.16, y = 0.024) and good external quantum efficiency (EQE) of 3.1% when employed in a guest–host system OLED.

scholarly journals Low efficiency roll-off blue TADF OLEDs employing a novel acridine–pyrimidine based high triplet energy host

2021 ◽  
Author(s):  
Francesco Rodella ◽  
Rishabh Saxena ◽  
Sergey Bagnich ◽  
Dovydas Banevičius ◽  
Gediminas Kreiza ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Host Material ◽  
Triplet Energy ◽  
Low Efficiency

A novel pyrimidine-based host material with a triplet energy of 3.07 eV was synthesized. Sky blue and blue OLEDs were fabricated, obtaining high external quantum efficiency and extremely low efficiency roll-off.

Non-halogenated solvent-processed highly efficient green Ir(iii) complexes with an external quantum efficiency exceeding 23% for phosphorescent organic light-emitting diodes

2020 ◽  
Vol 8 (37) ◽  
pp. 12959-12967
Author(s):  
Raja Kumaresan ◽  
Athithan Maheshwaran ◽  
Ho-Yeol Park ◽  
Kyungmin Sung ◽  
Jungmin Choi ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light

High efficiency green phosphorescent Ir(III) complexes with solubilizing groups introduced to enable non-halogenated solvent-based fabrication of PHOLEDs with high EQE and CE values.

scholarly journals Highly efficient non-doped blue organic light emitting diodes based on a D–π–A chromophore with different donor moieties

RSC Advances ◽  
2017 ◽  
Vol 7 (22) ◽  
pp. 13604-13614 ◽  
Author(s):  
Venugopal Thanikachalam ◽  
Palanivel Jeeva ◽  
Jayaraman Jayabharathi
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Light Emitting Diodes ◽  
Blue Emission ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light ◽  
Maximum Current

The non-doped OLED based on MPPIS-Cz exhibits blue emission with CIE of (0.16, 0.08), maximum current and external quantum efficiency of 1.52 cd A−1 and of 1.42%, respectively.

Highly efficient yellow phosphorescent organic light-emitting diodes with novel phosphine oxide-based bipolar host materials

2015 ◽  
Vol 3 (43) ◽  
pp. 11540-11547 ◽  
Author(s):  
Song Zhang ◽  
Qiu-Lei Xu ◽  
Jing-Cheng Xia ◽  
Yi-Ming Jing ◽  
You-Xuan Zheng ◽  
...  
Keyword(s):  
Phosphine Oxide ◽  
External Quantum Efficiency ◽  
Power Efficiency ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light ◽  
Host Materials ◽  
Maximum Current ◽  
Low Efficiency

Highly efficient yellow OLEDs based on bipolar host materials show a maximum current efficiency of 68.28 cd A−1, a maximum external quantum efficiency of 21.3% and a maximum power efficiency of 50.90 lm W−1 with low efficiency roll-off.

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