P-152: Efficient Blue Phosphorescent OLEDs Employing Novel Oligocarbazoles as High-Triplet-Energy Host Materials

2007 ◽  
Vol 38 (1) ◽  
pp. 772-775 ◽  
Author(s):  
Ming-Han Tsai ◽  
Yun-Hua Hong ◽  
Chih-Hao Chang ◽  
Hai-Ching Su ◽  
Chung-Chih Wu ◽  
...  
Keyword(s):  
Triplet Energy ◽  
Host Materials ◽  
Blue Phosphorescent

Carbazolylphosphines and carbazolylphosphine oxides: facilely synthesized host materials with tunable mobilities and high triplet energy levels for blue phosphorescent OLEDs

2017 ◽  
Vol 5 (29) ◽  
pp. 7344-7351 ◽  
Author(s):  
Zifeng Zhao ◽  
Gang Yu ◽  
Qiaowen Chang ◽  
Xiaochen Liu ◽  
Yang Liu ◽  
...  
Keyword(s):  
Energy Levels ◽  
Triplet Energy ◽  
Charge Mobility ◽  
Highly Efficient ◽  
Host Materials ◽  
Blue Phosphorescent

Selectively modulating the charge mobility of host materials by the oxidation of phosphines for highly efficient blue phosphorescent OLEDs.

scholarly journals Electron-Rich 4-Substituted Spirobifluorenes: Toward a New Family of High Triplet Energy Host Materials for High-Efficiency Green and Sky Blue Phosphorescent OLEDs

2017 ◽  
Vol 9 (7) ◽  
pp. 6194-6206 ◽  
Author(s):  
Cassandre Quinton ◽  
Sébastien Thiery ◽  
Olivier Jeannin ◽  
Denis Tondelier ◽  
Bernard Geffroy ◽  
...  
Keyword(s):  
High Efficiency ◽  
Triplet Energy ◽  
New Family ◽  
Host Materials ◽  
Blue Phosphorescent

High-triplet-energy tri-carbazole derivatives as host materials for efficient solution-processed blue phosphorescent devices

2011 ◽  
Vol 21 (13) ◽  
pp. 4918 ◽  
Author(s):  
Wei Jiang ◽  
Lian Duan ◽  
Juan Qiao ◽  
Guifang Dong ◽  
Deqiang Zhang ◽  
...  
Keyword(s):  
Efficient Solution ◽  
Triplet Energy ◽  
Solution Processed ◽  
Carbazole Derivatives ◽  
Host Materials ◽  
Blue Phosphorescent

Silane coupling di-carbazoles with high triplet energy as host materials for highly efficient blue phosphorescent devices

2009 ◽  
Vol 19 (34) ◽  
pp. 6143 ◽  
Author(s):  
Dehua Hu ◽  
Ping Lu ◽  
Chunlei Wang ◽  
He Liu ◽  
Huan Wang ◽  
...  
Keyword(s):  
Triplet Energy ◽  
Highly Efficient ◽  
Host Materials ◽  
Silane Coupling ◽  
Blue Phosphorescent

scholarly journals Phosphine Sulfide-Based Bipolar Host Materials for Blue Phosphorescent Organic Light-Emitting Diodes

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 4079
Author(s):  
Gaozhan Xie ◽  
Jiangchao Wang ◽  
Yang Cao ◽  
Xudong Xue ◽  
Xiao Zhang ◽  
...  
Keyword(s):  
Power Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Triplet Energy ◽  
One Pot ◽  
Light Emitting ◽  
Organic Light ◽  
Host Materials ◽  
Blue Phosphorescent ◽  
Phosphine Sulfide

Three phosphine sulfide-based bipolar host materials, viz CzPhPS, DCzPhPS, and TCzPhPS, were facilely prepared through a one-pot synthesis in excellent yields. The developed hosts exhibit superior thermal stabilities with the decomposition temperatures (Td) all exceeding 350 °C and the melting temperatures (Tm) over 200 °C. In addition, their triplet energy (ET) levels are estimated to be higher than 3.0 eV, illustrating that they are applicable to serve as hosts for blue phosphorescent organic light-emitting diodes (PhOLEDs). The maxima luminance, current efficiency (CE), power efficiency (PE), and external quantum efficiency (EQE) of 17223 cd m−2, 36.7 cd A−1, 37.5 lm W−1, and 17.5% are achieved for the blue PhOLEDs hosted by CzPhPS. The PhOLEDs based on DCzPhPS and TCzPhPS show inferior device performance than that of CzPhPS, which might be ascribed to the deteriorated charge transporting balance as the increased number of the constructed carbazole units in DCzPhPS and TCzPhPS molecules would enhance the hole-transporting ability of the devices to a large extent. Our study demonstrates that the bipolar hosts derived from phosphine sulfide have enormous potential applications in blue PhOLEDs, and the quantity of donors should be well controlled to exploit highly efficient phosphine sulfide-based hosts.

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