Journal
DYES AND PIGMENTS
Volume 137, Issue -, Pages 36-42Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2016.09.051
Keywords
Hole transport; Fluorene; Indole; OLEDs; Host
Ask authors/readers for more resources
A series of novel hole transport materials based on fluorene and indole were designed, synthesized and well characterized. The carbazole and triphenylamine groups, which have excellent charge carrier mobility and low ionization potential, were introduced by coupling reactions. Ultraviolet visible (UV-vis) spectral, photoluminescence (PL) spectral, cyclic voltammetry (CV), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) measurements were performed to investigate the photophysical properties, thermal properties and electrochemical properties of these materials. The results implied that all these materials have excellent thermal stabilities with the 5% weight loss at 409 456 degrees C. The OLED devices based on the as-prepared materials were fabricated to investigate their hole transport ability. It turns out that device based on compound c exhibited the best performance with a maximum current efficiency of 3.74 cd/A and turn-on voltage at 4.0 V. The device performances indicated that the as-prepared materials can serve as highly efficient hole transport materials in OLED devices. (C) 2016 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available