A. Bolognesi et al., Photoluminescence and electroluminescence in Langmuir-Blodgett films of poly(3-decylmethoxythiophene), SYNTH METAL, 98(2), 1998, pp. 123-127
The photoluminescence (PL) and electroluminescence (EL) of poly(3-decylmeth
oxythiophene) have been studied for devices fabricated using both the spin-
coating, and Langmuir-Blodgett (LB) technique. Strong thermochromic effects
in the FL, correlated to a thermal transition in the polymer, are observed
for the spin-coated films while negligible thermal dependence of the PL is
observed in the LB films. A blue shift of the EL with respect to PL is obs
erved for the LB films and is associated to partial polymer degradation. By
analysing the time evolution of EL during the first minutes of device oper
ation, the processes related to annealing and Al diffusion at the electrode
/polymer interface are discussed. (C) 1998 Elsevier Science S.A. All rights
reserved.