Current Steps in Poly(3-Hexylthiophene)/ZnO Nanobelt Hybrid Diodes
We report the poly(3iophene) (P3HT)/ZnO nanobelt hybrid p-n junction diodes characterized by using a conductive atomic force microscope (C-AFM). The diodes exhibited a turn-on voltage of about 2.5 V and ideality factor of about 11.6. The obvious current steps in the I-V characteristics under the reverse bias were clearly observed at room temperature. The origin of these steps is suggested to be attributed to the charge injection-trapping induced by nanoparticles on the surface of the ZnO nanobelt.
Jian-Feng Nie and Allan Morton
W. Guo et al., "Current Steps in Poly(3-Hexylthiophene)/ZnO Nanobelt Hybrid Diodes", Materials Science Forum, Vols. 654-656, pp. 1158-1161, 2010