Sa. Jeglinski et al., ELECTRICALLY SYMMETRICAL POLY(PHENYLENE ACETYLENE) DIODES, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 256, 1994, pp. 555-561
A diode has been fabricated with poly(phenylene acetylene) [PPA] as th
e electroluminescent polymer. The device exhibited an unusual symmetri
c (positive and negative bias) I-V characteristic and electroluminesce
nt output. These experimental results ate discussed in terms of tunnel
ing of electrons and holes via localized states.