Approaches for fabricating high efficiency organic light emitting diodes

2015 ◽  
Vol 3 (13) ◽  
pp. 2974-3002 ◽  
Author(s):  
Jwo-Huei Jou ◽  
Sudhir Kumar ◽  
Abhishek Agrawal ◽  
Tsung-Han Li ◽  
Snehashis Sahoo
Keyword(s):  
Energy Saving ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Materials ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light

Highly efficient OLEDs are extremely demanded for the design of highly competitive energy-saving displays and lightings. In this article, we have systematically reviewed some most effective organic materials, eleven device architectural approaches, and outcoupling techniques to realize the high efficiency OLEDs.

A replacement for incandescent bulbs: high-efficiency blue-hazard free organic light-emitting diodes

2017 ◽  
Vol 5 (1) ◽  
pp. 176-182 ◽  
Author(s):  
J. H. Jou ◽  
H. H. Yu ◽  
F. C. Tung ◽  
C. H. Chiang ◽  
Z. K. He ◽  
...  
Keyword(s):  
Energy Saving ◽  
Light Source ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light

A blue-hazard free, healthy light source will become the mainstream of future lighting wherein higher energy saving is always a must.

High efficiency above 20% in polymeric thermally activated delayed fluorescent organic light-emitting diodes by a host embedded backbone structure

2019 ◽  
Vol 10 (35) ◽  
pp. 4872-4878 ◽  
Author(s):  
Yun Hwan Park ◽  
Ho Jin Jang ◽  
Jun Yeob Lee
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Light Emitting Diode ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Thermally Activated ◽  
Highly Efficient ◽  
Organic Light ◽  
Backbone Structure

A highly efficient polymeric thermally activated delayed fluorescent (TADF) organic light-emitting diode was developed by synthesizing a copolymer with 9-vinylcarbazole (VCz) and TADF repeating units.

Highly efficient orange and deep-red organic light emitting diodes with long operational lifetimes using carbazole–quinoline based bipolar host materials

2014 ◽  
Vol 2 (30) ◽  
pp. 6183-6191 ◽  
Author(s):  
Chin-Hsien Chen ◽  
Lun-Chia Hsu ◽  
P. Rajamalli ◽  
Yu-Wei Chang ◽  
Fang-Iy Wu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light ◽  
Host Materials ◽  
Operational Lifetime

A new series of carbazole–quinoline based host materials for orange and red PhOLEDs are synthesized. A record-high efficiency with long operational lifetime is achieved.

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.

Highly efficient deep-red organic light-emitting diodes using exciplex-forming co-hosts and thermally activated delayed fluorescence sensitizers with extended lifetime

2019 ◽  
Vol 7 (31) ◽  
pp. 9531-9536 ◽  
Author(s):  
Dan Li ◽  
Liang-Sheng Liao
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Highly Efficient ◽  
Organic Light

High-efficiency deep-red phosphorescent OLEDs with a narrow FWHM based on exciplex-forming co-hosts and TADF sensitizers realized an EQE of 21.5%.

Trifluoromethane modification of thermally activated delayed fluorescence molecules for high-efficiency blue organic light-emitting diodes

2018 ◽  
Vol 54 (59) ◽  
pp. 8261-8264 ◽  
Author(s):  
Masayuki Yokoyama ◽  
Ko Inada ◽  
Youichi Tsuchiya ◽  
Hajime Nakanotani ◽  
Chihaya Adachi
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Highly Efficient ◽  
Organic Light

Highly efficient blue and green thermally activated delayed fluorescence (TADF) molecules bearing trifluoromethane-modified carbazole groups were developed.

Effect of dielectric character of electron transporting materials on the performance of organic light-emitting diodes

MRS Advances ◽  
2018 ◽  
Vol 3 (59) ◽  
pp. 3445-3451 ◽  
Author(s):  
Rohit Ashok Kumar Yadav ◽  
Deepak Kumar Dubey ◽  
Sun-Zen Chen ◽  
Sujith Sudheendran Swayamprabha ◽  
Tzu-Wei Liang ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Materials ◽  
Structure Design ◽  
Organic Light Emitting Diodes ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Light Emitting ◽  
Organic Light

AbstractOrganic light-emitting diodes (OLEDs) have progressively attracted generous attention because of their versatile applications in solid state lighting and full color displays. High-efficiency is crucial for OLED devices being energy saving and to have a longer lifespan. Numerous approaches have been attempted to attain high-efficiency OLEDs via newly synthesized organic materials, light-extraction structure design and energy-efficient device architectures. The organic materials used in optoelectronic devices have inherently low dielectric constant. In this work, we demonstrate a comprehensive model to quantitatively investigate the role of dielectric constant of the electron transporting material on the electric field distribution, charge drift and exciton recombination probability across the emissive layer (EML) and electron transport layer (ETL) in organic light-emitting diode via commercialized electrical simulation package SETFOS.

Highly efficient crystalline organic light-emitting diodes

2018 ◽  
Vol 6 (33) ◽  
pp. 8879-8884 ◽  
Author(s):  
Xinxiao Yang ◽  
Xiao Feng ◽  
Jianhui Xin ◽  
Panlong Zhang ◽  
Haibo Wang ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Light Emitting Diode ◽  
Organic Light Emitting Diodes ◽  
High Quality ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Highly Efficient ◽  
Organic Light

An efficient crystalline organic light-emitting diode based on high-quality crystalline heteroepitaxy films has been constructed, which exhibits high efficiency.

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