Charging characteristics of Sb nanocrystals embedded in copper phthalocyanine films for memory applications

The charging characteristics of Sb nanocrystals embedded in organic semiconductor copper phthalocyanine (CuPc) have been studied for the first time. The images from atomic force microscopy show that Sb NCs grown on the surface of CuPc film exhibit a vertical height of 10-15 nm and uniform distribution, which are interspersed with a few bigger ones (~30 nm). Two kinds of capacitance-voltage measurements, frequency responds and hysteresis loops, of the control sample and the one embedded with Sb NCs indicate the charging and discharging of the Sb NCs.