Electron Accumulation/ Depletion at F_(16)CoPc/Znq_3 Heterojunction: Kelvin Probe and Charge Transport Study

摘要

We have synthesized n-n isotype organic heterojunction comprising of n-type cobalt hexadecafluorophthalocyanine (F_(16)CoPc)/n-type tris(8-hydroxyquinoline)zinc (Znq_3) thermal evaporation method. Using Kelvin probe we found that electrons are accumulated at F_(16)CoPc and depleted in Znq_3 sides of interface. The total thickness of electrons accumulation and depletion were found to be 16 nm. Electron accumulation was further confirmed by charge transport measurement.