Highly emissive carbazole-functionalized homopoly(spirobifluorene) for deep-blue polymer light-emitting diodes

2017 ◽  
Vol 8 (14) ◽  
pp. 2182-2188 ◽  
Author(s):  
Keyan Bai ◽  
Shumeng Wang ◽  
Lei Zhao ◽  
Junqiao Ding ◽  
Lixiang Wang
Keyword(s):  
Light Emitting Diodes ◽  
Side Chain ◽  
Light Emitting ◽  
Deep Blue ◽  
Polymer Light Emitting Diodes

By fully replacing the alkyloxy side chain with a carbazole, a highly emissive homopolymer P(Cz-SF) is developed for deep-blue PLEDs.

P-146: Fluorene-Based Deep Blue Polymer Light-Emitting Diodes

2005 ◽  
Vol 36 (1) ◽  
pp. 858 ◽  
Author(s):  
Yong Kyun Lee ◽  
Soon Kab Kwon ◽  
Moon Hyo Kang ◽  
Jun Young Kim ◽  
Tae Jin Park ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Light Emitting ◽  
Deep Blue ◽  
Polymer Light Emitting Diodes

scholarly journals Deep blue polymer light emitting diodes based on easy to synthesize, non-aggregating polypyrene

2011 ◽  
Vol 19 (S6) ◽  
pp. A1281 ◽  
Author(s):  
Roman Trattnig ◽  
Teresa M. Figueira-Duarte ◽  
Dominik Lorbach ◽  
Wolfgang Wiedemair ◽  
Stefan Sax ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Light Emitting ◽  
Deep Blue ◽  
Polymer Light Emitting Diodes

scholarly journals High brightness deep blue/violet fluorescent polymer light-emitting diodes (PLEDs)

2015 ◽  
Vol 3 (37) ◽  
pp. 9664-9669 ◽  
Author(s):  
Javan H. Cook ◽  
José Santos ◽  
Hameed A. Al-Attar ◽  
Martin R. Bryce ◽  
Andrew P. Monkman
Keyword(s):  
Light Emitting Diodes ◽  
High Brightness ◽  
Light Emitting ◽  
Deep Blue ◽  
Polymer Light Emitting Diodes ◽  
Fluorescent Polymer

New deep blue/violet emitting co-polymers are reported. In simple PLED architectures efficiency values as high as ηext,max 1.4% and Lmax 565 cd m−2 with CIEx,y (0.16, 0.07) are obtained.

Synthesis of Carbazole-Based Polymers with 1,3,4-Oxadiazole Pendant Group and Their Application in Organic Light-Emitting Diodes

2008 ◽  
Vol 8 (9) ◽  
pp. 4846-4850
Author(s):  
Hui Wang ◽  
Jeong-Tak Ryu ◽  
Chao Cao ◽  
Younghwan Kwon
Keyword(s):  
Light Emitting Diodes ◽  
Band Gap Energy ◽  
Side Chain ◽  
Visible Absorption ◽  
Homo Energy ◽  
Light Emitting ◽  
Hole Transporting ◽  
Palladium Catalyzed ◽  
Polymer Light Emitting Diodes ◽  
Uv Visible

Structurally well-defined copolymers with high solubility were prepared via palladium-catalyzed polycondensation of N-(2-ethylhexyl)-3,6-dibromocarbazole with 2-aryl-5-(4-aminophenyl)-1,3,4-oxadiazole (aryl = phenyl, p-methylphenyl, p-methoxyphenyl). Copolymers consisted of alkylcarbazole groups in the main chain and 1,3,4-oxadiazole pendants in the side chain. The influence of their aryl substituents on physical, optical, band gaps and electroluminescent characteristics of the copolymers was investigated. Both UV-Visible absorption and photoluminescence emission peaks of the copolymers were similar to each other. The band gap energy of the polymers was measured in the range of 2.84∼2.88 eV, and HOMO energy in the range of −5.13∼−5.18 eV. These copolymers were used as hole-transporting layers (HTL) in the light-emitting diodes with Alq3 as an emitting layer. Compared to devices with P-H and P-OCH3 used as HTL, it should be noted that device with P-CH3 used as HTL showed higher luminescence. Maximum luminescence of devices was measured to be 276cd/m2 at 14 V with P-H, 625 cd/m2 at 15 V with P-CH3, and 471 cd/m2 at 14 V with P-OCH3. This might be due to effect of subtle changes in HOMO energy level of polymers with changing substituent groups. Phosphorescent polymer light emitting diodes were also fabricated with an emitting layer consisting of P-CH3 matrix and a red phosphorescent dopant (Ir-PIQCH).

scholarly journals Efficient deep blue fluorescent polymer light-emitting diodes (PLEDs)

2014 ◽  
Vol 2 (28) ◽  
pp. 5587-5592 ◽  
Author(s):  
Javan H. Cook ◽  
José Santos ◽  
Haiying Li ◽  
Hameed A. Al-Attar ◽  
Martin R. Bryce ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Light Emitting ◽  
Deep Blue ◽  
Polymer Light Emitting Diodes ◽  
Fluorescent Polymer

New conjugated electroluminescent triphenylamine-containing polymers with side-chain pyridin-2-ylimidazo[1,5-a]pyridine groups for polymer light-emitting diodes

2013 ◽  
Vol 450 (2) ◽  
pp. 165-172 ◽  
Author(s):  
M. L. Keshtov ◽  
Fang-Chung Chen ◽  
E. I. Maltsev ◽  
D. V. Marochkin ◽  
V. S. Kochurov ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Side Chain ◽  
Light Emitting ◽  
Polymer Light Emitting Diodes
Sign in / Sign up

Export Citation Format

Share Document