Directed migration of additives to form top interlayers in polymer light emitting diodes

2017 ◽  
Vol 5 (48) ◽  
pp. 12744-12751 ◽  
Author(s):  
L. Nouzman ◽  
G. L. Frey
Keyword(s):  
Light Emitting Diodes ◽  
Solution Processing ◽  
Light Emitting ◽  
Emissive Layer ◽  
Directed Migration ◽  
Polymer Light Emitting Diodes ◽  
Cathode Interface

A new methodology to self-generate interlayers at the emissive layer/cathode interface in OLEDs that is fully compatible with solution processing and enhances device performances.

Highly Promoting the Performances of Polymer Light-Emitting Diodes via Control of the Residue of a Polar Solvent on an Emissive Layer

2017 ◽  
Vol 9 (22) ◽  
pp. 18399-18404 ◽  
Author(s):  
Qiaoli Niu ◽  
Hengsheng Wu ◽  
Wentao Huang ◽  
Jing Tong ◽  
Fengye Ye ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Polar Solvent ◽  
Light Emitting ◽  
Emissive Layer ◽  
Polymer Light Emitting Diodes

scholarly journals Study on the Optoelectronic Properties of UV Luminescent Polymer: ZnO Nanoparticles Dispersed PANI

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
J. Kayathri ◽  
N. RaniMeiyammai ◽  
S. Rani ◽  
K. P. Bhuvana ◽  
K. Palanivelu ◽  
...  
Keyword(s):  
Thin Films ◽  
Zno Nanoparticles ◽  
Light Emitting Diodes ◽  
Hexagonal Wurtzite Structure ◽  
Film Material ◽  
Potassium Persulphate ◽  
Visible Absorption ◽  
Light Emitting ◽  
Emissive Layer ◽  
Polymer Light Emitting Diodes

The present work is focused on the synthesis and characterization of a new polymer thin film material suitable for emissive layer in polymer light-emitting diodes. Thin films of polyaniline and ZnO nanoparticles dispersed polyaniline have been prepared and investigated for the suitability of emissive layer in polymer light emitting diodes. ZnO nanoparticles have been synthesized using wet chemical method and characterized using powder X-ray diffraction. Diffraction pattern reveals that the ZnO nanoparticles are grown in hexagonal wurtzite structure with the preferential orientation of (001) plane. Polyaniline was synthesized using potassium persulphate (initiator) at room temperature. ZnO nanoparticles are then dispersed in different doping level (5%, 10%, 15% 20% and 50%) with polyaniline. Thin films of ZnO dispersed polyaniline (PANI/ZnO) were prepared and characterized using scanning electron microscopy in order to investigate the surface morphology of the film. The optical characteristics and the suitability of film as emissive layer were analyzed using UV-visible absorption and fluorescence spectroscopy.

White polymer light emitting diodes based on PVK: the effect of the electron injection barrier on transport properties, electroluminescence and controlling the electroplex formation

2016 ◽  
Vol 18 (48) ◽  
pp. 33077-33084 ◽  
Author(s):  
Dipjyoti Das ◽  
Peddaboodi Gopikrishna ◽  
Rahul Narasimhan ◽  
Ashish Singh ◽  
Anamika Dey ◽  
...  
Keyword(s):  
Charge Transport ◽  
Transport Properties ◽  
Light Emitting Diodes ◽  
Electron Injection ◽  
Light Emitting ◽  
Emissive Layer ◽  
Polymer Light Emitting Diodes ◽  
Injection Barrier

The influence of the electron injection barrier on charge transport, brightness and EL properties of WPLEDs with PVK as an emissive layer has been reported.

Solution-Processed Organic Light-Emitting Diodes Using a Photo-Crosslinkable Hole-Transporting Layer

2020 ◽  
Vol 20 (8) ◽  
pp. 4661-4665
Author(s):  
Jeong Yong Park ◽  
Jae-Ho Jang ◽  
Ji-Hoon Lee ◽  
Do-Hoon Hwang
Keyword(s):  
Organic Solvents ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Solution Processing ◽  
Solution Processed ◽  
Solution Deposition ◽  
Light Emitting ◽  
Emissive Layer ◽  
Organic Light ◽  
Hole Transporting

Photo-crosslinkable hole transporting layer (HTL) consisting of a blend of poly(bis-4-butylphenyl-N,N-bisphenyl)benzidine (poly-TPD) and bis(4-azido-2,3,5,6-tetrafluorobenzoate) (FPA) was applied to red and green organic light-emitting diodes (OLEDs) by solution processing. This photocrosslinking reaction rendered the HTL insoluble in organic solvents and enabled subsequent solution deposition of an upper emissive layer. The solvent resistance of the photo-crosslinked poly-TPD:FPA (1 wt%) film was enhanced compared to that of the non-crosslinked neat poly-TPD film. Solution-processed red and green OLEDs with the poly-TPD:FPA (1 wt%) photo-crosslinked HTL exhibited higher device performances than those with the non-crosslinked poly-TPD HTL.

Sign in / Sign up

Export Citation Format

Share Document