Highly Efficient Organic Light-Emitting Diodes with Low Efficiency Roll-Off Based on Iridium Complexes Containing Pinene Sterically Hindered Spacer

2016 ◽  
Vol 4 (11) ◽  
pp. 1726-1731 ◽  
Author(s):  
Yong-Hui Zhou ◽  
Qiu-Lei Xu ◽  
Hua-Bo Han ◽  
Yue Zhao ◽  
You-Xuan Zheng ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Iridium Complexes ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light ◽  
Sterically Hindered ◽  
Low Efficiency

Efficient organic light-emitting diodes based on iridium(III) complexes containing indolo[3,2,1-jk]carbazole derivatives with narrow emission bandwidths and low efficiency roll offs

2021 ◽  
Author(s):  
Xiang-Ji Liao ◽  
Jin-Jun Zhu ◽  
Li Yuan ◽  
Zhi-Ping Yan ◽  
Xu-Feng Luo ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Carbazole Derivatives ◽  
Highly Efficient ◽  
Organic Light ◽  
Low Efficiency ◽  
Narrow Emission

In this work, two cyclometalated ligands 2-(pyridin-2-yl)indolo[3,2,1-jk]carbazole (pyidcz) and 2-(4-(trifluoromethyl)pyridin-2-yl)indolo[3,2,1-jk]carbazole (tfpyidcz) using indolo[3,2,1-jk]carbazole unit were synthesized for highly efficient iridium(III) complexes (pyidcz)2Ir(tmd) and (tfpyidcz)2Ir(tmd) (tmd = 2,2,6,6-tetramethyl-3,5-heptanedione). The two Ir(III)...

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...

Multifunctional emitters for efficient simplified non-doped blueish green organic light emitting devices with extremely low efficiency roll-off

2017 ◽  
Vol 5 (26) ◽  
pp. 6527-6536 ◽  
Author(s):  
Amjad Islam ◽  
Dongdong Zhang ◽  
Xinhua Ouyang ◽  
Rongjuan Yang ◽  
Tao Lei ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Scientific Research ◽  
Industrial Applications ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Highly Efficient ◽  
Organic Light ◽  
Device Structures ◽  
Low Efficiency

Highly efficient organic light-emitting diodes (OLEDs) with simplified device structures are widely desired for both scientific research and industrial applications.

Deep-red iridium(iii) complexes cyclometalated by phenanthridine derivatives for highly efficient solution-processed organic light-emitting diodes

2016 ◽  
Vol 4 (16) ◽  
pp. 3492-3498 ◽  
Author(s):  
Bei Jiang ◽  
Yu Gu ◽  
Jingjing Qin ◽  
Xiaowen Ning ◽  
Shaolong Gong ◽  
...  
Keyword(s):  
Efficient Solution ◽  
Light Emitting Diodes ◽  
Simple Approach ◽  
Emission Peak ◽  
Organic Light Emitting Diodes ◽  
Iridium Complexes ◽  
Solution Processed ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light

The introduction of 4-tert-butyl-N-phenylaniline groups into phenanthridine derivatives is demonstrated as a simple approach to develop solution-processed deep-red iridium complexes. The resulting PhOLEDs achieve a maximum EQE of 5.2% with the emission peak at 682 nm.

Sky-blue iridium complexes with pyrimidine ligands for highly efficient phosphorescent organic light-emitting diodes

2020 ◽  
Vol 44 (21) ◽  
pp. 8743-8750
Author(s):  
Haiyang Ma ◽  
Di Liu ◽  
Jiuyan Li ◽  
Yongqiang Mei ◽  
Deli Li ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Iridium Complexes ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light ◽  
Cie Coordinates ◽  
Maximum Quantum Efficiency

Three sky blue heteroleptic Ir(III) complexes with emission peaks at 457–459 nm, have been developed. A maximum quantum efficiency of 21.23% with CIE coordinates of (0.15, 0.26) is realized in their PhOLEDs, representing a higher efficiencies and improved color purities than FIrpic.

Fluorine-free, highly efficient, blue-green and sky-blue-emitting cationic iridium complexes and their use for efficient organic light-emitting diodes

2018 ◽  
Vol 6 (6) ◽  
pp. 1509-1520 ◽  
Author(s):  
Lei He ◽  
Ying Lan ◽  
Dongxin Ma ◽  
Xiangzhi Song ◽  
Lian Duan
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Iridium Complexes ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light

Fluorine-free, highly efficient, blue-green and sky-blue-emitting cationic iridium complexes were developed, which showed high performances in organic light-emitting diodes.

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