Modifying organic/metal interface via solvent treatment to improve electron injection in organic light emitting diodes

2011 ◽  
Vol 12 (11) ◽  
pp. 1858-1863 ◽  
Author(s):  
Qing Wang ◽  
Yan Zhou ◽  
Hua Zheng ◽  
Jian Shi ◽  
Chunzeng Li ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Electron Injection ◽  
Organic Light Emitting Diodes ◽  
Organic Metal ◽  
Metal Interface ◽  
Solvent Treatment ◽  
Light Emitting ◽  
Organic Light

scholarly journals Unravelling the electron injection/transport mechanism in organic light-emitting diodes

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Tsubasa Sasaki ◽  
Munehiro Hasegawa ◽  
Kaito Inagaki ◽  
Hirokazu Ito ◽  
Kazuma Suzuki ◽  
...  
Keyword(s):  
Work Function ◽  
Transport Mechanism ◽  
Light Emitting Diodes ◽  
Light Emitting Diode ◽  
Electron Injection ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Materials Used

AbstractAlthough significant progress has been made in the development of light-emitting materials for organic light-emitting diodes along with the elucidation of emission mechanisms, the electron injection/transport mechanism remains unclear, and the materials used for electron injection/transport have been basically unchanged for more than 20 years. Here, we unravelled the electron injection/transport mechanism by tuning the work function near the cathode to about 2.0 eV using a superbase. This extremely low-work function cathode allows direct electron injection into various materials, and it was found that organic materials can transport electrons independently of their molecular structure. On the basis of these findings, we have realised a simply structured blue organic light-emitting diode with an operational lifetime of more than 1,000,000 hours. Unravelling the electron injection/transport mechanism, as reported in this paper, not only greatly increases the choice of materials to be used for devices, but also allows simple device structures.

A Robust Yellow-Emitting Metallophosphor with Electron-Injection/-Transporting Traits for Highly Efficient White Organic Light-Emitting Diodes

ChemPhysChem ◽  
2011 ◽  
Vol 12 (15) ◽  
pp. 2836-2843 ◽  
Author(s):  
Guijiang Zhou ◽  
Xiaolong Yang ◽  
Wai-Yeung Wong ◽  
Qi Wang ◽  
Si Suo ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Electron Injection ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light
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