Electroluminescence Applications of Fluorene-Benzotriazole Based Polymers With Double Bound Subunit

Kök C., Doyranlı C., Baycan Koyuncu F., Canımkurbey B., Mucur S., Koyuncu S.

NTERNATIONAL CHEMISTRY & BIOLOGY CONFERENCE’19, Kafr-Ash-Shaykh, Egypt, 01 August 2019, pp.67

  • Publication Type: Conference Paper / Summary Text
  • City: Kafr-Ash-Shaykh
  • Country: Egypt
  • Page Numbers: pp.67
  • Çanakkale Onsekiz Mart University Affiliated: Yes


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.