Electroluminescence in Both Original and Nano Particle Doped Polyimide Films

Tested electroluminescence (EL) of both original and inorganic nano particle doped polyimide films under dc field by experimental set-up made-home. The results showed that the luminescence of both polyimide films increased along with the electric field. Their pre-breakdown fields obtained by measuring EL were much similar. The pre-breakdown field of nano particle doped polyimide film was higher than the original´s, But, under the same field, the EL of the former was less than the latter´s. The EL of nano particle doped polyimide films had peak value whose width was about 60s after 430s, and the EL was higher than initial value throughout the descending region