Efficient yellow electroluminescence of four iridium(iii) complexes with benzo[d]thiazole derivatives as main ligands

2018 ◽  
Vol 47 (24) ◽  
pp. 8032-8040 ◽  
Author(s):  
Zhi-Gang Niu ◽  
Jun Chen ◽  
Peng Tan ◽  
Wei Sun ◽  
You-Xuan Zheng ◽  
...  
Keyword(s):  
Current Efficiency ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Thiazole Derivatives ◽  
Maximum Current

Four yellow iridium(iii) complexes with benzo[d]thiazole derivatives as the main ligands display good device performances with a maximum current efficiency of up to 69.8 cd A−1 and a maximum external quantum efficiency of up to 24.3%.

Efficient electroluminescence of bluish green iridium complexes with 2-(3,5-bis(trifluoromethyl)phenyl)pyrimidine and 2-(3,5-bis(trifluoromethyl)phenyl)-5-fluoropyrimidine as the main ligands

2018 ◽  
Vol 5 (7) ◽  
pp. 1545-1552 ◽  
Author(s):  
Hua-Bo Han ◽  
Zheng-Guang Wu ◽  
You-Xuan Zheng
Keyword(s):  
Current Efficiency ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Iridium Complexes ◽  
Bluish Green ◽  
Maximum Current

Four bluish green iridium complexes with high photoluminescence quantum efficiencies were applied in OLEDs, and they showed a maximum current efficiency of 74.70 cd A−1 and a maximum external quantum efficiency of 35.0% with mild efficiency roll-off.

Efficient bluish green electroluminescence of iridium complexes with good electron mobility

2018 ◽  
Vol 42 (16) ◽  
pp. 13351-13357 ◽  
Author(s):  
Hua-Bo Han ◽  
Zheng-Guang Wu ◽  
You-Xuan Zheng
Keyword(s):  
Current Efficiency ◽  
Quantum Efficiency ◽  
Electron Mobility ◽  
External Quantum Efficiency ◽  
Iridium Complexes ◽  
Bluish Green ◽  
Maximum Current

Two efficient bluish green iridium complexes with good electron mobility were applied in efficient OLEDs, showing a maximum current efficiency of 71.18 cd A−1 and a maximum external quantum efficiency of 27.7%.

scholarly journals Photoluminescence and electroluminescence of deep red iridium(iii) complexes with 2,3-diphenylquinoxaline derivatives and 1,3,4-oxadiazole derivatives ligands

RSC Advances ◽  
2017 ◽  
Vol 7 (59) ◽  
pp. 37021-37031 ◽  
Author(s):  
Yi-Ming Jing ◽  
You-Xuan Zheng
Keyword(s):  
Current Efficiency ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Maximum Current ◽  
Oxadiazole Derivatives

OLEDs using efficient deep red iridium(iii) complexes display good electroluminescence performances with maximum current efficiency and external quantum efficiency of up to 14.0 cd A−1and 17.8%, respectively, and the efficiency roll-off is mild.

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.

Efficient deep red electroluminescence of iridium(iii) complexes with 2,3-diphenylquinoxaline derivatives and tetraphenylimidodiphosphinate

2017 ◽  
Vol 5 (15) ◽  
pp. 3714-3724 ◽  
Author(s):  
Yi-Ming Jing ◽  
Fang-Zhou Wang ◽  
You-Xuan Zheng ◽  
Jing-Lin Zuo
Keyword(s):  
Current Efficiency ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Maximum Current ◽  
Red Oleds

Efficient deep red OLEDs based on iridium(iii) complexes show a maximum current efficiency and external quantum efficiency of up to 16.6 cd A−1and 19.9%, respectively, with mild efficiency roll-off.

Photoluminescence and electroluminescence of an iridium(iii) complex with 2′,6′-bis(trifluoromethyl)-2,4′-bipyridine and 2-(5-phenyl-1,3,4-thiadiazol-2-yl)phenol ligands

2017 ◽  
Vol 41 (8) ◽  
pp. 3029-3035 ◽  
Author(s):  
Yi-Ming Jing ◽  
You-Xuan Zheng
Keyword(s):  
Electron Transport ◽  
Current Efficiency ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Greenish Yellow ◽  
Maximum Current

Efficient greenish yellow OLEDs based on an iridium(iii) complex containing electron transport ligands of 2′,6′-bis(trifluoromethyl)-2,4′-bipyridine and 2-(5-phenyl-1,3,4-thiadiazol-2-yl)phenol show a maximum current efficiency of 54.5 cd A−1and a maximum external quantum efficiency of 16.1%.

Efficient green photoluminescence and electroluminescence of iridium complexes with high electron mobility

2018 ◽  
Vol 47 (46) ◽  
pp. 16543-16550 ◽  
Author(s):  
Hua-Bo Han ◽  
Zheng-Guang Wu ◽  
Zhi-Ping Yan ◽  
Yue Zhao ◽  
You-Xuan Zheng
Keyword(s):  
Current Efficiency ◽  
Quantum Efficiency ◽  
Electron Mobility ◽  
External Quantum Efficiency ◽  
High Electron ◽  
Iridium Complexes ◽  
High Electron Mobility ◽  
Maximum Current ◽  
Green Photoluminescence

Two green iridium complexes with high photoluminescence quantum efficiency were applied in OLEDs showing a maximum current efficiency of 92.76 cd A−1 and a maximum external quantum efficiency of 31.8%, and the efficiency roll-off ratio is low.

scholarly journals Red to orange thermally activated delayed fluorescence polymers based on 2-(4-(diphenylamino)-phenyl)-9H-thioxanthen-9-one-10,10-dioxide for efficient solution-processed OLEDs

RSC Advances ◽  
2021 ◽  
Vol 11 (40) ◽  
pp. 24794-24806
Author(s):  
Praetip Khammultri ◽  
Pongsakorn Chasing ◽  
Chirawat Chitpakdee ◽  
Supawadee Namuangruk ◽  
Taweesak Sudyoadsuk ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Current Efficiency ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Efficient Solution ◽  
Delayed Fluorescence ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Maximum Current ◽  
Orange Color

TADF conjugated polymers having 2-(4-(diphenylamino)-phenyl)-9H-thioxanthen-9-one-10,10-dioxide as a TADF unit showed red/orange color emissions and enabled OLED devices with a maximum external quantum efficiency of 10.44% and a maximum current efficiency of 14.97 cd A−1

scholarly journals Pyridinyl-Carbazole Fragments Containing Host Materials for Efficient Green and Blue Phosphorescent OLEDs

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4615
Author(s):  
Dovydas Blazevicius ◽  
Daiva Tavgeniene ◽  
Simona Sutkuviene ◽  
Ernestas Zaleckas ◽  
Ming-Ruei Jiang ◽  
...  
Keyword(s):  
Current Efficiency ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Power Efficiency ◽  
Triplet Energy ◽  
New Host ◽  
High Brightness ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Host Materials

Pyridinyl-carbazole fragments containing low molar mass compounds as host derivatives H1 and H2 were synthesized, investigated, and used for the preparation of electro-phosphorescent organic light-emitting devices (PhOLEDs). The materials demonstrated high stability against thermal decomposition with the decomposition temperatures of 361–386 °C and were suitable for the preparation of thin amorphous and homogeneous layers with very high values of glass transition temperatures of 127–139 °C. It was determined that triplet energy values of the derivatives are, correspondingly, 2.82 eV for the derivative H1 and 2.81 eV for the host H2. The new derivatives were tested as hosts of emitting layers in blue, as well as in green phosphorescent OLEDs. The blue device with 15 wt.% of the iridium(III)[bis(4,6-difluorophenyl)-pyridinato-N,C2′]picolinate (FIrpic) emitter doping ratio in host material H2 exhibited the best overall characteristics with a power efficiency of 24.9 lm/W, a current efficiency of 23.9 cd/A, and high value of 10.3% of external quantum efficiency at 100 cd/m2. The most efficient green PhOLED with 10 wt% of Ir(ppy)3 {tris(2-phenylpyridine)iridium(III)} in the H2 host showed a power efficiency of 34.1 lm/W, current efficiency of 33.9 cd/A, and a high value of 9.4% for external quantum efficiency at a high brightness of 1000 cd/m2, which is required for lighting applications. These characteristics were obtained in non-optimized PhOLEDs under an ordinary laboratory atmosphere and could be improved in the optimization process. The results demonstrate that some of the new host materials are very promising components for the development of efficient phosphorescent devices.

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%.

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