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Abstract
Photoluminescent(PL) spectra of Alq3 as supplied and after thermal treatment was measured to verify the degradation during thermal imidization of poly(amic acid). The electroluminescent devices(ELDs) composed of ITO, Alq3/BPDA-PDA PAA or BPDA-PDA polyimide, Mg, and In were fabricated. Current-voltage and EL characteristics of the ELDs were also studied. At 50/50 composition, the turn-on voltage of ELD was ca. 12V. The ELD illuminated bright green light at 25V.