Sodium−Quinolate Complexes as Efficient Electron Injection Materials for Organic Light-Emitting Diode Devices

2011 ◽  
Vol 115 (5) ◽  
pp. 2433-2438 ◽  
Author(s):  
Xia Sun ◽  
Dong-Ying Zhou ◽  
Lihua Qiu ◽  
Liang-Sheng Liao ◽  
Feng Yan
2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Tsubasa Sasaki ◽  
Munehiro Hasegawa ◽  
Kaito Inagaki ◽  
Hirokazu Ito ◽  
Kazuma Suzuki ◽  
...  

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.


RSC Advances ◽  
2018 ◽  
Vol 8 (15) ◽  
pp. 8402-8411 ◽  
Author(s):  
Jayaraman Jayabharathi ◽  
Sekar Panimozhi ◽  
Venugopal Thanikachalam ◽  
Annadurai Prabhakaran ◽  
Palanivel Jeeva

Ti-doped ZrO2 facilitates electron injection effectively, leading to enhanced current efficiency of 2.84 cd A−1 and power efficiency of 1.32 lm W−1


2000 ◽  
Vol 111-112 ◽  
pp. 327-330 ◽  
Author(s):  
S Barth ◽  
P Müller ◽  
H Riel ◽  
P.F Seidler ◽  
W Rieß ◽  
...  

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