Exciplex formation at the organic solid-state interface: Yellow emission in organic light-emitting diodes using green-fluorescent tris(8-quinolinolato)aluminum and hole-transporting molecular materials with low ionization potentials

1998 ◽  
Vol 72 (6) ◽  
pp. 636-638 ◽  
Author(s):  
Koji Itano ◽  
Hiromitsu Ogawa ◽  
Yasuhiko Shirota
Keyword(s):  
Solid State ◽  
Ionization Potentials ◽  
Organic Light Emitting Diodes ◽  
Yellow Emission ◽  
Light Emitting ◽  
Exciplex Formation ◽  
Organic Light ◽  
Organic Solid ◽  
Hole Transporting ◽  
Green Fluorescent

Progress on ultraviolet organic electroluminescence and lasing

2020 ◽  
Vol 8 (42) ◽  
pp. 14665-14694 ◽  
Author(s):  
Minyu Chen ◽  
Yingjie Liao ◽  
Yang Lin ◽  
Tao Xu ◽  
Weixia Lan ◽  
...  
Keyword(s):  
Solid State ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Solid State Lasers ◽  
Organic Electroluminescence ◽  
Light Emitting ◽  
Practical Applications ◽  
Organic Chromophores ◽  
Organic Light ◽  
Organic Solid

This review focusses on UV organic light-emitting diodes and organic solid-state lasers, and covers their recent development from organic chromophores and device configuration to practical applications.

scholarly journals High efficiency blue organic light-emitting diodes with below-bandgap electroluminescence

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Maria Vasilopoulou ◽  
Abd. Rashid bin Mohd Yusoff ◽  
Matyas Daboczi ◽  
Julio Conforto ◽  
Anderson Emanuel Ximim Gavim ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
High Mobility ◽  
Organic Light Emitting Diodes ◽  
Triplet Energy ◽  
Material Interface ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light ◽  
Hole Transporting

AbstractBlue organic light-emitting diodes require high triplet interlayer materials, which induce large energetic barriers at the interfaces resulting in high device voltages and reduced efficiencies. Here, we alleviate this issue by designing a low triplet energy hole transporting interlayer with high mobility, combined with an interface exciplex that confines excitons at the emissive layer/electron transporting material interface. As a result, blue thermally activated delay fluorescent organic light-emitting diodes with a below-bandgap turn-on voltage of 2.5 V and an external quantum efficiency (EQE) of 41.2% were successfully fabricated. These devices also showed suppressed efficiency roll-off maintaining an EQE of 34.8% at 1000 cd m−2. Our approach paves the way for further progress through exploring alternative device engineering approaches instead of only focusing on the demanding synthesis of organic compounds with complex structures.

Low driving voltage and high stability organic light-emitting diodes with rhenium oxide-doped hole transporting layer

2007 ◽  
Vol 91 (1) ◽  
pp. 011113 ◽  
Author(s):  
Dong-Seok Leem ◽  
Hyung-Dol Park ◽  
Jae-Wook Kang ◽  
Jae-Hyun Lee ◽  
Ji Whan Kim ◽  
...  
Keyword(s):  
High Stability ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Driving Voltage ◽  
Rhenium Oxide ◽  
Light Emitting ◽  
Organic Light ◽  
Hole Transporting

Solution-processable highly efficient deep-red and orange organic light-emitting diodes based on multi-functional Ir(iii) complexes

2017 ◽  
Vol 5 (38) ◽  
pp. 10029-10038 ◽  
Author(s):  
Woosum Cho ◽  
Ganguri Sarada ◽  
Athithan Maheshwaran ◽  
Yeong-Soon Gal ◽  
Yeonsig Nam ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Improve Performance ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light ◽  
Hole Transporting ◽  
Solution Processable

Linking the hole transporting/electron transporting functional moieties to the Ir(iii) complex is a key strategy to improve performance of PhOLEDs.

Effect of Double Hole-Transporting Structure on Color Purity of Blue Organic Light-Emitting Diodes (BOLED)

2013 ◽  
Vol 311 ◽  
pp. 424-429
Author(s):  
Kan Lin Chen ◽  
Chien Jung Huang ◽  
Zong Jin Wu ◽  
Chih Chieh Kang ◽  
Wen Ray Chen ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Organic Light Emitting Diodes ◽  
Blue Color ◽  
Color Purity ◽  
Television System ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Hole Transporting ◽  
The Right

A blue organic light-emitting diode (OLED) with a double hole-transporting (DHT) structure has been developed. The blue color purity was improved by modulation the thickness of CBP layer. When the thicknesses of left CBP and right CBP are respectively 8 nm and 2 nm, the more pure blue coordinates are (0.155, 0.079), which are very close to the blue coordinates of the national television system committee (NTSC) standard (0.14, 0.08). Furthermore the current density, brightness and the luminous efficiency of device with the left CBP of 8 nm and the right CBP of 2 nm are respectively 144.7 mA/cm2, 1065 cd/m2 and 0.93 cd/A.

Growth and Crystal Structure of Alq3 Single Crystals. A new structure showing π–π and CH-π interactions.

2004 ◽  
Vol 829 ◽  
Author(s):  
Ali N. Rashid ◽  
Donald C. Craig
Keyword(s):  
Crystal Structure ◽  
Thin Films ◽  
Solid State ◽  
Single Crystals ◽  
Metal Chelate ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
The Past ◽  
Organic Light ◽  
Available Information

Tris-(8-hydroxyquinoline) aluminum III (Alq3) is a stable metal chelate that has received a great deal of attention over the past years due to its use in the fabrication of organic light emitting diodes (OLED).[1,2] Despite all the interest in this remarkable material very little information on its' solid-state properties and packing exists. Nearly all of the available information comes from studies that have been carried out on vacuum deposited thin films.[1]

scholarly journals Pure exciplex-based white organic light-emitting diodes with imitation daylight emissions

RSC Advances ◽  
2018 ◽  
Vol 8 (53) ◽  
pp. 30582-30588 ◽  
Author(s):  
Dian Luo ◽  
Chung-Tsung Hsieh ◽  
Yen-Po Wang ◽  
Thomas C. Chuang ◽  
Hsin-Hua Chang ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Hole Transporting ◽  
White Oleds ◽  
Hole Transporting Material

Three hole-transporting material (HTM)/electron-transporting material (ETM) combinations are chosen to generate blue, green and red exciplexes, allowing us to design precise device architectures for the fabrication of exciplex-based white OLEDs with daylight-like emissions.

Synthesis, characterization, and hole-transporting properties of benzotriazatruxene derivatives

2019 ◽  
Vol 7 (47) ◽  
pp. 15035-15041 ◽  
Author(s):  
Tianchai Chooppawa ◽  
Supawadee Namuangruk ◽  
Hiroshi M. Yamamoto ◽  
Vinich Promarak ◽  
Paitoon Rashatasakhon
Keyword(s):  
Field Effect ◽  
Light Emitting Diodes ◽  
Field Effect Transistors ◽  
Organic Light Emitting Diodes ◽  
Organic Field Effect Transistors ◽  
Light Emitting ◽  
Organic Light ◽  
Hole Transporting ◽  
Derivatives Of ◽  
Hole Transporting Materials

Four derivatives of benzotriazatruxene are synthesized and tested as hole-transporting materials in organic field-effect transistors and organic light-emitting diodes.

Sign in / Sign up

Export Citation Format

Share Document