Research Information System
NTERNATIONAL CHEMISTRY & BIOLOGY CONFERENCE’19, Kafr-Ash-Shaykh, Egypt, 01 August 2019, pp.67
The invention of organic light-emitting diodes (OLEDs) by Tang and Van Slyke [1] in the
late 1980s,. Then, Adachi, Saito, and Tsutsui [2] have been obtained well promised results in
early 1990s with the use of π-conjugated polymers. Subsequently, optoelectronic devices have
made great progress due to the development of π-conjugated polymers [3]. π-conjugated materials
are used in the active and charge carrier layers of OLEDs. OLEDs have many advantages, such as
self-emission, low operating voltage, fast switching time, easy manufacturing at low cost, and
potentials for full-color, flat-panel displays and flexible displays [4].
Fluorene-benzotriazole (SP3) and Fluorene-thiophene-benzotriazole (TP2) based
electroactive polymers with double bound subunit were synthesized by a Suzuki coupling
polymerization reaction to investigate their emissive performance for organic light emitting diodes
(OLEDs) applications. The stuructural characterizations, UV-Vis absorbance, photoluminescence
and electroluminescence characteristics of TP2 and SP3 were investigated in detail. The OLED
device configuration of TP2 and SP3 were used as emmisive layer constructed with
ITO/PEDOT:PSS (60 nm)/ emissive layer (35 nm)/ TPBi (5 nm) /Ca:Al. TP2 emitted a bright
yellow emission with a maximum brightness of 300 cd/m2
, and a maximum current efficiency of
0.6 cd/A. SP3 emitted a green yellow emission with a maximum brightness of 1000 cd/m2
, and a
maximum EL efficiency of 0.32 cd/A Device structure of TP2 and SP3 was modeled as a simple
combination of two resistors and a capacitor. All the results indicate that TP2 and SP3 have been a
promising candidate for optoelectronic materials used in OLEDs.