Integration of colloidal silicon nanocrystals on metal electrodes in single-electron transistor

We develop a facile process to integratecolloidal silicon nanocrystals (Si NCs) withmetalelectrodes in a single-electron transistor byself-assembly.Gold(Au)surface is modified by an amine-terminatedself-assembled monolayer to have a positive potential. All-inorganic boron (B) and phosphorus (P)codoped Si NCs, with a negativesurface potential and size-controllability, are selectively adsorbed on an amine-terminatedAusurface by electrostatic attraction. We demonstrate the fabrication of SETs consisting of electroless-platedAu nanogapelectrodes andcodoped Si NCs using this process and observation of clear Coulomb diamonds at 9  K.

Source: Applied Physics Letters - November 22, 2016 Category: Physics Authors: Yasuhiro Higashikawa, Yasuo Azuma, Yutaka Majima, Shinya Kano and Minoru Fujii Source Type: research