Covalent bonding of coumarin molecules to sol-gel matrices for organic light-emitting device applications

2000 ◽  
Author(s):  
Ari H. O. Karkkainen ◽  
Osmo E. O. Hormi ◽  
Juha T. Rantala
Keyword(s):  
Sol Gel ◽  
Covalent Bonding ◽  
Light Emitting ◽  
Organic Light ◽  
Device Applications

The Study of Hole Injection in OLEDs with Ultra-Thin Sol-Gel TiO2 Layer

2011 ◽  
Vol 189-193 ◽  
pp. 42-46
Author(s):  
You Wang Hu ◽  
Xiao Yan Sun ◽  
Jian Duan
Keyword(s):  
Sol Gel ◽  
Hole Transport ◽  
Organic Light Emitting Diodes ◽  
Transport Layer ◽  
Hole Injection ◽  
Hole Transport Layer ◽  
Carrier Injection ◽  
Light Emitting ◽  
Organic Light ◽  
Pre Treatment

Organic light-emitting diodes (OLEDs) with inserting an ultrathin sol–gel titanium oxide (TiO2) buffer layer between the ITO anode and hole transport layer (HTL) were fabricated. The carrier injection and the device efficiency were affected by surface morphology of TiO2, which was changed by different plasma pre-treatment of ITO. Treated by CF4 plasma, the TiO2 layer is the smoothest, and treated by H2 plasma it is like island. The TiO2 layer like island is favor of carrier injection from the anode, which was attributed to the point discharged.

All Solution-Processed Quintuple-Layer Organic Light-Emitting Diodes Containing Organic-Inorganic Hybrid Active Layers Fabricated by Sol-Gel Method

2018 ◽  
Vol 777 ◽  
pp. 113-120
Author(s):  
Yusuke Jitsui ◽  
Naoki Ohtani
Keyword(s):  
Thin Films ◽  
Active Layer ◽  
Light Emitting Diodes ◽  
Sol Gel ◽  
Organic Light Emitting Diodes ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Gel Method ◽  
Organic Layers ◽  
Organic Light

Organic-inorganic hybrid thin films were fabricated using the sol-gel method and applied to multi-layer organic light-emitting diodes (OLEDs) as an active layer. A polymer emissive material poly (9,9-dioctyl-fluorene-co-N-4-butylphenyl-diphenylamine) (TFB) was solved in a sol-gel reaction accelerator perhydropolysilazane (PHPS). The PHPS solution turned into SiO2 by humidity treatment. Thus, the TFB:PHPS solution became SiO2 thin films in which the organic emissive material TFB was dispersed. All the organic layers of OLEDs can be fabricated using solution-process because the organic-inorganic hybrid active layer is not soluble with the adjacent organic layers. Consequently, we successfully fabricated quintuple-layer OLEDs consisting of the following five organic films: hole-injection, hole-transporting, active (organic-inorganic hybrid) electron-transporting, and electron-injection layers. Electroluminescence (EL) was successfully observed.

Tungsten Oxide Buffer Layers Fabricated in an Inert Sol-Gel Process at Room-Temperature for Blue Organic Light-Emitting Diodes

2013 ◽  
Vol 25 (30) ◽  
pp. 4113-4116 ◽  
Author(s):  
Stefan Höfle ◽  
Michael Bruns ◽  
Stefan Strässle ◽  
Claus Feldmann ◽  
Uli Lemmer ◽  
...  
Keyword(s):  
Tungsten Oxide ◽  
Room Temperature ◽  
Light Emitting Diodes ◽  
Sol Gel ◽  
Organic Light Emitting Diodes ◽  
Buffer Layers ◽  
Light Emitting ◽  
Organic Light ◽  
Sol Gel Process

Novel 1,8-naphthalimide derivatives for standard-red organic light-emitting device applications

2015 ◽  
Vol 3 (20) ◽  
pp. 5259-5267 ◽  
Author(s):  
Shuai Luo ◽  
Jie Lin ◽  
Jie Zhou ◽  
Yi Wang ◽  
Xingyuan Liu ◽  
...  
Keyword(s):  
High Performance ◽  
Performance Standard ◽  
Light Emitting ◽  
Organic Light ◽  
Device Applications

A 1,8-naphthalimide derivative has been demonstrated to be a high performance standard-red EL material.

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