Synthesis, characterization, and electroluminescent properties of pyridinylene vinylene modified phenylene vinylene copolymers
作者：tang rp, et al
關(guān)鍵字：electroluminescence
論文來源：期刊
具體來源：Journal of Electronic Materials
發(fā)表時(shí)間：2012年
Two random copolymers of phenylene vinylene and pyridinylene vinylene, ED-co-PyV-PPV and EM-co-PyV-PPV, were synthesized according to the Gilch route. The polymers possess good solubility in common solvents, and high thermal stability with 5% weight loss temperature above 378C. The weightaverage molecular weight (Mw) and polydispersity index of ED-co-PyV-PPV and EM-co-PyV-PPV are 3.12 9 105 and 1.40, and 2.30 9 105 and 1.96, respectively. Single-layer polymer light-emitting diodes (PLEDs) with indium
tin oxide (ITO)/poly(3,4-ethylenedioxythiophene) (PEDOT):poly(styrenesulfonate)
(PSS)/polymer/Ca/Al configuration were fabricated. The turn-on voltages of the PLEDs based on ED-co-PyV-PPV and EM-co-PyV-PPV were approximately 4.0 V and 2.8 V, respectively. The ED-co-PyV-PPV PLED device exhibited the maximum luminance of ca. 4380 cd/m2 with maximum electroluminescence (EL) efficiency of 6.35 cd/A.