A new polyfluorene containing repeated ethylenoxy units linked to glycerol as side chains: Synthesis and application as an electron injection material in the fabrication of polymer light-emitting diodes

[Display omitted] ► A new polyfluorene (PF-GOH) was synthesized as an electron injection material. ► PLEDs were fabricated with a ITO/PEDOT:PSS/MEH-PPV/PF-GOH/Al configuration. ► The performance of the PLEDs was largely dependent on the solvent systems employed. ► The solvent dependency was attribut...

Full description

Saved in:
Bibliographic Details
Published in:Synthetic metals 2012-12, Vol.162 (23), p.2163-2170
Main Authors: Kwon, Jae-Taek, Moon, Byung Seuk, Shin, Jin-Koog, Lee, Soo-Hyoung, Lee, Sang-Hee, Lee, Youn-Sik
Format: Article
Language:English
Subjects:
Applied sciences
Electron injection material
Electronics
Exact sciences and technology
Optoelectronic devices
Organic polymers
Physicochemistry of polymers
PLED
Polyfluorene
Polymers with particular properties
Preparation, kinetics, thermodynamics, mechanism and catalysts
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] ► A new polyfluorene (PF-GOH) was synthesized as an electron injection material. ► PLEDs were fabricated with a ITO/PEDOT:PSS/MEH-PPV/PF-GOH/Al configuration. ► The performance of the PLEDs was largely dependent on the solvent systems employed. ► The solvent dependency was attributed to the uniformity in the PF-GOH layer thickness. A new polyfluorene derivative (PF-GOH) containing repeated ethylenoxy units linked to glycerol as side chains was synthesized as an electron injection material. The polymer was not very soluble in methanol, but reasonably soluble in mixed solvents such as methanol/ethylene glycol (EG) and isopropyl alcohol (IPA)/EG. Polymer light-emitting diodes (PLEDs) were fabricated with a ITO/PEDOT:PSS/MEH-PPV/PF-GOH/Al configuration. The PLEDs exhibited significantly improved performance in the presence of the PF-GOH layer compared to the device without the electron injection polymer layer. The performance of the PLEDs was largely dependent on the solvent systems employed. Among methanol, methanol/EG (3:1), and IPA/EG (1:1), the best performance was obtained when IPA/EG (1:1) was used. The improved performance was attributed to the more uniform thickness of the electron injection layer of PF-GOH, leading to much less current leakage.
ISSN:0379-6779
1879-3290
DOI:10.1016/j.synthmet.2012.09.010