High photo and electroluminescence efficiency oligothiophenes

Authors :: Giuseppe Gigli
M Ani
Franco Cacialli
R. Cingolani
L. Favaretto
G. Barbarella
Gigli, Giuseppe
Anni, Marco
G., Barbarella
L., Favaretto
F., Cacialli
Cingolani, Roberto
Source :: Physica E: Low-dimensional Systems and Nanostructures. 7:612-615
Publication Year :: 2000
Publisher :: Elsevier BV, 2000.
Abstract: We report photo and electroluminescence efficiency of a thiophene oligomer functionalized to enhance its solid-state efficiency. We find that the absolute PL quantum yield is up to 37% for spin-coated thin films of the compound. The material has been used as active material in organic light-emitting diodes (LEDs). EL efficiencies up to 0.9 cd/A are demonstrated in LEDs prepared with a blend indium tin oxide and Ca–Al electrodes.