High Efficiency New Hole Injection Materials for Organic Light Emitting Diodes Based on Dimeric Phenothiazine and Phenoxazine Moiety Derivatives

2012 ◽  
Vol 12 (5) ◽  
pp. 4356-4360 ◽  
Author(s):  
Youngil Park ◽  
Beomjin Kim ◽  
Changjun Lee ◽  
Jaehyun Lee ◽  
Ji-Hoon Lee ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Hole Injection ◽  
Light Emitting ◽  
Organic Light ◽  
Injection Materials

Water-soluble pH neutral triazatruxene-based small molecules as hole injection materials for solution-processable organic light-emitting diodes

2019 ◽  
Vol 7 (26) ◽  
pp. 7900-7905 ◽  
Author(s):  
Yonghong Chen ◽  
Xiaofu Wu ◽  
Yang Liu ◽  
Liang Chen ◽  
Hua Li ◽  
...  
Keyword(s):  
Small Molecules ◽  
Light Emitting Diodes ◽  
Water Soluble ◽  
Organic Light Emitting Diodes ◽  
Hole Injection ◽  
Light Emitting ◽  
Organic Light ◽  
Solution Processable ◽  
Injection Materials

Water-soluble and pH neutral triazatruxene-based small molecules have been used as hole injection materials in solution-processable organic light-emitting diodes, achieving even better performance compared with PEDOT:PSS.

Efficient and bright phosphorescent organic light-emitting diodes adopting MoO3/PEDOT:PSS as dual hole injection layers

2019 ◽  
Vol 33 (24) ◽  
pp. 1950284
Author(s):  
Nan Zhang ◽  
Yang Chen ◽  
Yan-Hui Wang
Keyword(s):  
Indium Tin Oxide ◽  
High Performance ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Acid Corrosion ◽  
Organic Light Emitting Diodes ◽  
Superior Performance ◽  
Hole Injection ◽  
Light Emitting ◽  
Organic Light

It has been demonstrated that high efficiency and brightness can be achieved in phosphorescent organic light-emitting diodes (PHOLEDs) by using molybdenum oxide (MoO3)/poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) as dual hole injection layers (HILs) on indium tin oxide (ITO) substrate. The dual HILs were simply fabricated by spin-coating PEDOT:PSS solution on a thin MoO3 layer deposited by vacuum thermal evaporation. This work reveals that PEDOT:PSS coating on MoO3 resulted in a smoother surface, simultaneously MoO3 lamella prevented acid corrosion of PEDOT:PSS on ITO. Meanwhile, with the insertion of PEDOT:PSS and MoO3 as HILs between anode and hole transporting layer (HTL), the energy barrier has been reduced and gave rise to effective hole injection. OLEDs with dual HILs resulted in the maximum current efficiency (CE) of 61.3 cd A[Formula: see text] and maximum luminance of 112200 cd cm[Formula: see text], which showed a superior performance compared to those devices with single HIL of PEDOT:PSS or MoO3. Our results proved the composition of PEDOT:PSS and MoO3 as HILs were beneficial for high performance OLEDs.

High-efficiency fluorescent organic light-emitting diodes with MoO3 and PEDOT : PSS composition film as a hole injection layer

2014 ◽  
Vol 2 (45) ◽  
pp. 9620-9624 ◽  
Author(s):  
Hongmei Zhang ◽  
Qiang Fu ◽  
Wenjin Zeng ◽  
Dongge Ma
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Hole Injection ◽  
Light Emitting ◽  
Hole Injection Layer ◽  
Organic Light ◽  
Interfacial Modification ◽  
Low Efficiency

The high efficiency and low efficiency roll-off can be achieved in C545T-based green OLEDs with MoO3/PEDOT : PSS as the interfacial modification layer on ITO.

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