scholarly journals Red Organic Light-Emitting-Diodes based on a N-Annulated Perylene Diimide Dimer

2019 ◽  
Author(s):  
Sergey V. Dayneko ◽  
Mohammad Rahmati ◽  
Majid Pahlevani ◽  
Gregory Welch
Keyword(s):  
Red Light ◽  
Organic Light Emitting Diodes ◽  
Perylene Diimide ◽  
Solution Processed ◽  
Light Emitting ◽  
Blend Films ◽  
Roll To Roll ◽  
Red Oleds ◽  
Halogenated Solvents ◽  
Composition Ratios

<p>In this contribution we report on solution processed red OLEDs based upon a N-annulated perylene diimide dimer, namely tPDI<sub>2</sub>N-EH, a red-light emitting molecule. OLED devices with the architecture of glass/ITO/PEDOT:PSS/EML/LiF/Ag (EML = emitting layer) were fabricated with EMLs comprised of tPDI<sub>2</sub>N-EH neat and blended with poly (9,9-dicotylfluorene, PFO), all solution processed from non-halogenated solvents. The photophysical and electrophysical performance of PFO:tPDI<sub>2</sub>N-EH-blend films with different composition ratios were investigated. The PFO:tPDI<sub>2</sub>N-EH-based OLEDs with a 2:18 ratio exhibited best performance. The PFO:tPDI<sub>2</sub>N-EH-based OLEDs gave red electroluminescence with the emission wavelength of 635 nm and the CIE (international commission on illumination) coordinates of (x = 0.672, y = 0.321). OLEDs with EMLs fabricated using roll-to-roll compatible methods are also demonstrated.</p>

scholarly journals Red Organic Light-Emitting-Diodes based on a N-Annulated Perylene Diimide Dimer

2019 ◽  
Author(s):  
Sergey V. Dayneko ◽  
Mohammad Rahmati ◽  
Majid Pahlevani ◽  
Gregory Welch
Keyword(s):  
Red Light ◽  
Organic Light Emitting Diodes ◽  
Perylene Diimide ◽  
Solution Processed ◽  
Light Emitting ◽  
Blend Films ◽  
Roll To Roll ◽  
Red Oleds ◽  
Halogenated Solvents ◽  
Composition Ratios

<p>In this contribution we report on solution processed red OLEDs based upon a N-annulated perylene diimide dimer, namely tPDI<sub>2</sub>N-EH, a red-light emitting molecule. OLED devices with the architecture of glass/ITO/PEDOT:PSS/EML/LiF/Ag (EML = emitting layer) were fabricated with EMLs comprised of tPDI<sub>2</sub>N-EH neat and blended with poly (9,9-dicotylfluorene, PFO), all solution processed from non-halogenated solvents. The photophysical and electrophysical performance of PFO:tPDI<sub>2</sub>N-EH-blend films with different composition ratios were investigated. The PFO:tPDI<sub>2</sub>N-EH-based OLEDs with a 2:18 ratio exhibited best performance. The PFO:tPDI<sub>2</sub>N-EH-based OLEDs gave red electroluminescence with the emission wavelength of 635 nm and the CIE (international commission on illumination) coordinates of (x = 0.672, y = 0.321). OLEDs with EMLs fabricated using roll-to-roll compatible methods are also demonstrated.</p>

Solution processed red organic light-emitting-diodes using an N-annulated perylene diimide fluorophore

2020 ◽  
Vol 8 (7) ◽  
pp. 2314-2319 ◽  
Author(s):  
Sergey V. Dayneko ◽  
Mohammad Rahmati ◽  
Majid Pahlevani ◽  
Gregory C. Welch
Keyword(s):  
Light Emitting Diodes ◽  
Red Light ◽  
Organic Light Emitting Diodes ◽  
Perylene Diimide ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light ◽  
Red Oleds

In this contribution we report on solution processed red OLEDs based upon an N-annulated perylene diimide dimer, namely tPDI2N-EH, a red-light emitting molecule.

Efficient solution-processed red all-fluorescent organic light-emitting diodes employing thermally activated delayed fluorescence materials as assistant hosts: molecular design strategy and exciton dynamic analysis

2017 ◽  
Vol 5 (21) ◽  
pp. 5223-5231 ◽  
Author(s):  
Dongjun Chen ◽  
Xinyi Cai ◽  
Xiang-Long Li ◽  
Zuozheng He ◽  
Chengsong Cai ◽  
...  
Keyword(s):  
Efficient Solution ◽  
Molecular Design ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Solution Processed ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Förster Energy Transfer ◽  
Red Oleds

Efficient Förster energy transfer process from TADF assistant hosts to fluorescent dye affords efficient solution-processed red OLEDs with a maximum EQE of 8.0%.

scholarly journals Solution-Processed Efficient Blue Phosphorescent Organic Light-Emitting Diodes (PHOLEDs) Enabled by Hole-Transport Material Incorporated Single Emission Layer

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 554
Author(s):  
Taeshik Earmme
Keyword(s):  
Light Emitting Diodes ◽  
Blue Emission ◽  
Hole Transport ◽  
Organic Light Emitting Diodes ◽  
Emission Layer ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light ◽  
Single Emission ◽  
Blue Phosphorescent

Solution-processed blue phosphorescent organic light-emitting diodes (PHOLEDs) based on a single emission layer with small-molecule hole-transport materials (HTMs) are demonstrated. Various HTMs have been readily incorporated by solution-processing to enhance hole-transport properties of the polymer-based emission layer. Poly(N-vinylcarbazole) (PVK)-based blue emission layer with iridium(III) bis(4,6-(di-fluorophenyl)pyridinato-N,C2′)picolinate (FIrpic) triplet emitter blended with solution-processed 1,1-bis[(di-4-tolylamino)phenyl]cyclohexane (TAPC) gave luminous efficiency of 21.1 cd/A at a brightness of 6220 cd/m2 with an external quantum efficiency (EQE) of 10.6%. Blue PHOLEDs with solution-incorporated HTMs turned out to be 50% more efficient compared to the reference device without HTMs. The high hole mobility, high triplet energy of HTM, and favorable energy transfer between HTM blended PVK host and FIrpic blue dopant were found to be important factors for achieving high device performance. The results are instructive to design and/or select proper hole-transport materials in solution-processed single emission layer.

Development of efficient solution-processed red phosphorescent organic light-emitting diodes using carrier transport materials

2010 ◽  
Vol 160 (15-16) ◽  
pp. 1623-1626 ◽  
Author(s):  
Myungkwan Song ◽  
Jin Su Park ◽  
Chul-Hyun Kim ◽  
Jang Soo Kim ◽  
Yeong-Soon Gal ◽  
...  
Keyword(s):  
Carrier Transport ◽  
Efficient Solution ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light

scholarly journals Horizontal molecular orientation in solution-processed organic light-emitting diodes

2015 ◽  
Vol 106 (6) ◽  
pp. 063301 ◽  
Author(s):  
L. Zhao ◽  
T. Komino ◽  
M. Inoue ◽  
J.-H. Kim ◽  
J. C. Ribierre ◽  
...  
Keyword(s):  
Molecular Orientation ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light
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