Novel Er-doped organic complexes for application in 1.5 μm emitting solution-processed organic light emitting diodes (OLEDs)

2011 ◽  
Vol 1286 ◽  
Author(s):  
Carmen Coya ◽  
Angel Luis Álvarez ◽  
Jesús Martín Gil ◽  
María Martín ◽  
Pablo Martín Ramos ◽  
...  
Keyword(s):  
Thin Films ◽  
Indium Tin Oxide ◽  
Light Emitting Diodes ◽  
Electrical Response ◽  
Organic Light Emitting Diodes ◽  
Solution Processed ◽  
Excitation Light ◽  
Light Emitting ◽  
Organic Light ◽  
Erbium Ion

ABSTRACTWe describe the fabrication and characterization of solution processed organic light emitting diodes (OLEDs) based on novel near-infrared emitting erbium(III) complexes, consisting of three perfluoroalkyl-β-diketone ligands and 5-NO2-1,10-phenanthroline as chelating N,N-donor molecule. The function of N,N molecule is to saturate the coordination sphere of the erbium ion and to harvest excitation light that can be transferred to the excited states of the erbium ion. The devices have been fabricated by spin-coating, using 1 %wt methanol precursor solutions. These Er-complexes form very uniform thin films. The OLED structure is glass/indium–tin oxide(ITO) / poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT:PSS)/Er-complex/Ca/Al. The good electrical response, with low threshold voltages (a few volts), together with the very uniform thin films formed, made these complexes promising for IR emitting displays.

scholarly journals Solution processed SnO2:Sb transparent conductive oxide as an alternative to indium tin oxide for applications in organic light emitting diodes

2016 ◽  
Vol 4 (16) ◽  
pp. 3563-3570 ◽  
Author(s):  
M. Esro ◽  
S. Georgakopoulos ◽  
H. Lu ◽  
G. Vourlias ◽  
A. Krier ◽  
...  
Keyword(s):  
Thin Films ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Light Emitting Diodes ◽  
Spray Pyrolysis Technique ◽  
Transparent Conductive Oxide ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Conductive Oxide

Here, we present the deposition of antimony-doped tin oxide thin films using the ambient spray pyrolysis technique and demonstrate their implementation as transparent electrodes (anodes) in red, green and blue organic light emitting diodes.

Indium tin oxide modified transparent nanotube thin films as effective anodes for flexible organic light-emitting diodes

2008 ◽  
Vol 93 (8) ◽  
pp. 083306 ◽  
Author(s):  
Jianfeng Li ◽  
Liangbing Hu ◽  
Jun Liu ◽  
Lian Wang ◽  
Tobin J. Marks ◽  
...  
Keyword(s):  
Thin Films ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light

Highly oriented indium tin oxide thin films for organic light-emitting diodes

2002 ◽  
Author(s):  
Heungsoo Kim ◽  
James S. Horwitz ◽  
W. H. Kim ◽  
Zakya H. Kafafi ◽  
Douglas B. Chrisey
Keyword(s):  
Thin Films ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Oxide Thin Films ◽  
Light Emitting ◽  
Organic Light

High performance indium tin oxide-free solution-processed organic light emitting diodes based on inkjet-printed fine silver grid lines

2016 ◽  
Vol 1 (3) ◽  
pp. 035004 ◽  
Author(s):  
Felix Hermerschmidt ◽  
Ignasi Burgués-Ceballos ◽  
Achilleas Savva ◽  
Eleftherios D Sepos ◽  
Alexander Lange ◽  
...  
Keyword(s):  
Tin Oxide ◽  
Indium Tin Oxide ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Free Solution ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light

scholarly journals Bottom Contact Metal Oxide Interface Modification Improving the Efficiency of Organic Light Emitting Diodes

Materials ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5082
Author(s):  
Sergey M. Pozov ◽  
Apostolos Ioakeimidis ◽  
Ioannis T. Papadas ◽  
Chen Sun ◽  
Alexandra Z. Chrusou ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Indium Tin Oxide ◽  
Bottom Electrode ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Hole Injection ◽  
Solution Processed ◽  
Light Emitting ◽  
Interface Modification ◽  
Organic Light

The performance of solution-processed organic light emitting diodes (OLEDs) is often limited by non-uniform contacts. In this work, we introduce Ni-containing solution-processed metal oxide (MO) interfacial layers inserted between indium tin oxide (ITO) and poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) to improve the bottom electrode contact for OLEDs using the poly(p-phenylene vinylene) (PPV) derivative Super-Yellow (SY) as an emission layer. For ITO/Ni-containing MO/PEDOT:PSS bottom electrode structures we show enhanced wetting properties that result in an improved OLED device efficiency. Best performance is achieved using a Cu-Li co-doped spinel nickel cobaltite [(Cu-Li):NiCo2O4], for which the current efficiency and luminous efficacy of SY OLEDs increased, respectively, by 12% and 11% from the values obtained for standard devices without a Ni-containing MO interface modification between ITO and PEDOT:PSS. The enhanced performance was attributed to the improved morphology of PEDOT:PSS, which consequently increased the hole injection capability of the optimized ITO/(Cu-Li):NiCo2O4/PEDOT:PSS electrode.

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.

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