Small single–triplet energy gap bipolar host materials for phosphorescent blue and white organic light emitting diodes

2013 ◽  
Vol 1 (33) ◽  
pp. 5008 ◽  
Author(s):  
Young Hoon Son ◽  
Young Jae Kim ◽  
Mi Jin Park ◽  
Hyoung-Yun Oh ◽  
Jung Soo Park ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Energy Gap ◽  
Organic Light Emitting Diodes ◽  
Triplet Energy ◽  
Light Emitting ◽  
Organic Light ◽  
Host Materials

Highly Efficient Phosphorescent Green Organic Light-Emitting Diodes with High Energy Gap Host Materials

2010 ◽  
Vol 530 (1) ◽  
pp. 83/[239]-90/[246]
Author(s):  
Hoe Min Kim ◽  
Ji Hyun Seo ◽  
Kum Hee Lee ◽  
Hyun Ju Kang ◽  
Seung Soo Yoon ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Energy Gap ◽  
High Energy ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light ◽  
Host Materials

Wide-Energy-Gap Host Materials for Blue Phosphorescent Organic Light-Emitting Diodes

2009 ◽  
Vol 21 (7) ◽  
pp. 1333-1342 ◽  
Author(s):  
Shanghui Ye ◽  
Yunqi Liu ◽  
Chong-an Di ◽  
Hongxia Xi ◽  
Weiping Wu ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Energy Gap ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Host Materials ◽  
Wide Energy ◽  
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.

Tuning the singlet–triplet energy gap of AIE luminogens: crystallization-induced room temperature phosphorescence and delay fluorescence, tunable temperature response, highly efficient non-doped organic light-emitting diodes

2015 ◽  
Vol 17 (2) ◽  
pp. 1134-1141 ◽  
Author(s):  
Jie Li ◽  
Yibin Jiang ◽  
Juan Cheng ◽  
Yilin Zhang ◽  
Huimin Su ◽  
...  
Keyword(s):  
Room Temperature ◽  
Light Emitting Diodes ◽  
Energy Gap ◽  
Temperature Response ◽  
Organic Light Emitting Diodes ◽  
Room Temperature Phosphorescence ◽  
Triplet Energy ◽  
Light Emitting ◽  
Organic Light ◽  
Delay Fluorescence

Tuning singlet–triplet energy gap of AIE luminogens: crystallization-induced phosphorescence, delay fluorescence and efficient non-doped OLEDs.

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