Abstract
Spin-coated polymer LEDs were characterized by UV-Vis and fluorescence spectroscopies. Electrochemical properties of poly 3 (2-(5-chlorobenzotriazolo) ethyl)thiophene LEDs as the emitting materials was studied by cyclic voltammetry. In cyclic voltammogram, PCBET shows reversible peaks at E0red = -2.1 V and E0ox = +0.91 V. Quantum efficiency of PCBET was much enhanced by introducing a benzotriazole moiety on the side chain.
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