All-solution-processed perovskite light-emitting diodes with all metal oxide transport layers

2018 ◽  
Vol 54 (94) ◽  
pp. 13283-13286 ◽  
Author(s):  
Lin Liu ◽  
Zhibin Wang ◽  
Wenda Sun ◽  
Jin Zhang ◽  
Siqian Hu ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Light Emitting Diodes ◽  
Device Structure ◽  
Solution Processed ◽  
Light Emitting ◽  
Conventional Device

Stable all-solution-processed perovskite light-emitting diodes with all metal oxide transport layers were successfully realized based on an ITO/NiOx/CsPbBr3/ZnMgO/Al conventional device structure.

scholarly journals Colloidal metal oxide nanocrystals as charge transporting layers for solution-processed light-emitting diodes and solar cells

2017 ◽  
Vol 46 (6) ◽  
pp. 1730-1759 ◽  
Author(s):  
Xiaoyong Liang ◽  
Sai Bai ◽  
Xin Wang ◽  
Xingliang Dai ◽  
Feng Gao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Metal Oxide ◽  
Light Emitting Diodes ◽  
Solution Processed ◽  
Light Emitting ◽  
Colloidal Metal

This review bridges the chemistry of colloidal oxide nanocrystals and their application as charge transporting interlayers in solution-processed optoelectronics.

All-solution-processed blue small molecular organic light-emitting diodes with multilayer device structure

2009 ◽  
Vol 10 (8) ◽  
pp. 1610-1614 ◽  
Author(s):  
Jia-Da You ◽  
Shin-Rong Tseng ◽  
Hsin-Fei Meng ◽  
Feng-Wen Yen ◽  
I-Feng Lin ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Device Structure ◽  
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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