Finely Tuned Blue Iridium Complexes with Varying Horizontal Emission Dipole Ratios and Quantum Yields for Phosphorescent Organic Light-Emitting Diodes

2014 ◽  
Vol 3 (2) ◽  
pp. 211-220 ◽  
Author(s):  
Jeong-Hwan Lee ◽  
Ganguri Sarada ◽  
Chang-Ki Moon ◽  
Woosum Cho ◽  
Kwon-Hyeon Kim ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Quantum Yields ◽  
Iridium Complexes ◽  
Light Emitting ◽  
Organic Light

Dendritic Iridium(III)-Encapsulated Complexes for Organic Light Emitting Diodes

2006 ◽  
Vol 965 ◽  
Author(s):  
Ho-Jin Son ◽  
Won-Sik Han ◽  
Kyu-Bum Choi ◽  
Dae-Hyun Kim ◽  
Jaejung Ko ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Single Layer ◽  
Organic Light Emitting Diodes ◽  
Quantum Yields ◽  
Iridium Complexes ◽  
Light Emitting ◽  
Organic Light ◽  
Large Enhancement ◽  
Molecular Charge ◽  
Intra Molecular Charge Transfer

ABSTRACTThe syntxhesis, photo-physics, and electroluminescence of new types of Iridium(III)-encapsulated dendrimers are described. Thus, four different iridium complexes [Ir(III)(C^N)2(LX), Blue-DCBP, Green-DCBP, Yellow-DCBP, and Red-DCBP] with ancillary ligand tethered to the CBP dendritic unit were synthesized and investigated for their photo-physical properties. A large enhancement in electroluminescence performance was observed by using these dendrimers as host/dopant hybrid materials in layered emitting diodes. In particular, host/dopant ratio can be systematically adjusted by varying dendritic generations. These results demonstrate that new Ir(III)-encapsulated dendrimers can be used as potential single-layer materials for organic light emitting diodes. Large difference in the intra-molecular charge transfer phosphorescence quantum yields and electroluminescence effiencies were observed among dendriritic generations.

Using phosphorescent PtAu3 clusters for superior solution-processable organic light emitting diodes with very small efficiency roll-off

2018 ◽  
Vol 6 (33) ◽  
pp. 8966-8976 ◽  
Author(s):  
Nagarajan Natarajan ◽  
Lin-Xi Shi ◽  
Hui Xiao ◽  
Jin-Yun Wang ◽  
Li-Yi Zhang ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Quantum Yields ◽  
Light Emitting ◽  
Cluster Complexes ◽  
Organic Light ◽  
Solution Processable

Tetraphosphine-supported PtAu3 cluster complexes display intense phosphorescence with quantum yields of over 90% in doped films. High-efficiency solution-processable OLEDs are successfully achieved with extremely small EQE roll-off at a practical brightness over 1000 cd m−2.

Highly Efficient Phosphorescent Organic Light-Emitting Diodes Based on Novel Bipolar Iridium Complexes with Easily-Tuned Emission Colors by Adjusting Fluorine Substitution on Phenylpyridine Ligands

2021 ◽  
Author(s):  
Shuonan Chen ◽  
Xi Gai ◽  
Jie Liang ◽  
Kaiqi Ye ◽  
Yu Liu ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Iridium Complexes ◽  
Fluorine Substitution ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light

Two new phenylpyridine derivatives-based heteroleptic iridium complexes, (Fppy)2Ir(dipg) (Fppdg) and (CF3ppy)2Ir(dipg) (tFmppdg) with emission peaks of 545 nm and 581 nm respectively, were designed and synthesized by incorporation of a...

Sky-blue-emitting cationic iridium complexes with carbazole-type counter-anions and their use for efficient solution-processed organic light-emitting diodes

2020 ◽  
Vol 49 (26) ◽  
pp. 8967-8975
Author(s):  
Renyou Yu ◽  
Pei Wang ◽  
Xianwen Meng ◽  
Lei He
Keyword(s):  
Efficient Solution ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Iridium Complexes ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light

Cationic iridium complexes with carbazole-type counter-anions show enhanced performances compared to those with PF6− counter-anions in OLEDs.

Design of pyridinylphosphinate-based blue iridium phosphors for high-efficiency organic light-emitting diodes

2021 ◽  
Author(s):  
Zheng-Guang Wu ◽  
Bing Yang ◽  
Yu-Chen Qiu ◽  
Yang Wang ◽  
Hong Dai ◽  
...  
Keyword(s):  
Electron Mobility ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Blue Emission ◽  
Organic Light Emitting Diodes ◽  
Iridium Complexes ◽  
Light Emitting ◽  
Organic Light ◽  
Novel Design

Novel design for iridium complexes merging blue emission and good electron mobility for high-efficiency OLEDs.

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