Correlation of interfacial electronic structures and transport properties in organic light emitting diodes

2009 ◽  
Author(s):  
I-Wen Wu ◽  
Yu-Hung Chen ◽  
Chao-Kung Wang ◽  
Chih-I Wu
Keyword(s):  
Transport Properties ◽  
Electronic Structures ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light

The photophysical properties and electronic structures of bis[1]benzothieno[6,7-d:6′,7′-d′]benzo[1,2-b:4,5-b′]dithiophene (BBTBDT) derivatives as hole-transporting materials for organic light-emitting diodes (OLEDs)

2019 ◽  
Vol 43 (40) ◽  
pp. 15899-15909 ◽  
Author(s):  
Mohamed Bourass ◽  
Najia Komiha ◽  
Oum Keltoum Kabbaj ◽  
Nuha Wazzan ◽  
Mourad Chemek ◽  
...  
Keyword(s):  
Electronic Structures ◽  
Light Emitting Diodes ◽  
Photophysical Properties ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Hole Transporting ◽  
Hole Transporting Materials

The compounds with the D–π–A structure are found to be good candidates for blue-emitting materials.

Solution processable nanocomposites based on silsesquioxane cores for use in organic light emitting diodes (OLEDs)

2004 ◽  
Vol 847 ◽  
Author(s):  
Alan Sellinger ◽  
Ryo Tamaki ◽  
Richard M. Laine ◽  
Kazunori Ueno ◽  
Hiroshi Tanabe ◽  
...  
Keyword(s):  
Transport Properties ◽  
Light Emitting Diodes ◽  
Dip Coating ◽  
Organic Light Emitting Diodes ◽  
Hole Injection ◽  
High Yield ◽  
Hybrid Thin Film ◽  
Light Emitting ◽  
New Family ◽  
Organic Light

ABSTRACTA new family of materials that synergistically combine the attributes of both organic and inorganic properties for use in organic light emitting diodes (OLEDs) is presented. The hybrid materials are based on 3-D inorganic cores of octavinylsilsesquioxanes (OVS). The resultant materials have high Tg's (120–210°C), are formed from minimal step/high yield reactions and readily available starting reagents, are monodisperse (PDI<1.1), can be highly purified via common chroma-tographic techniques, and form defect-free amorphous films via spin-dip coating. For example TPD is known for its good hole injection/transport properties in OLED applications but suffers from a low Tg (65°C). TPD-OVS hybrid material has a Tg of 142°C while maintaining similar injection/transport properties to TPD. Photoluminescence analysis of the hybrid thin film reveals: 1) a 30 nm blue shift versus their dilute solution counterparts; and 2) 5 hour annealing cycles to within 10°C of their Tg show no indication of eximer formation (no red shift) that often causes reduced efficiencies in polymer LEDs.

scholarly journals Phenanthro[9,10-d]triazole and imidazole derivatives: high triplet energy host materials for blue phosphorescent organic light emitting devices

2019 ◽  
Vol 6 (6) ◽  
pp. 1179-1186 ◽  
Author(s):  
Muazzam Idris ◽  
Caleb Coburn ◽  
Tyler Fleetham ◽  
JoAnna Milam-Guerrero ◽  
Peter I. Djurovich ◽  
...  
Keyword(s):  
Transport Properties ◽  
Light Emitting Diodes ◽  
Wide Bandgap ◽  
Organic Light Emitting Diodes ◽  
Triplet Energy ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Host Materials ◽  
Blue Phosphorescent

A class of wide bandgap host materials is introduced as an alternative to carbazole-based hosts to enhance the efficiency and transport properties of organic light emitting diodes (OLEDs).

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