Uniform charging energy of single-electron transistors by using size-controlled Au nanoparticles

• DOI: 10.1063/1.3676191
• Publication Date: 2012-01-17T23:59:15Z
• Authors: Norio Okabayashi; Kosuke Maeda; Taro Muraki; Daisuke Tanaka; Masanori Sakamoto; Toshiharu Teranishi; Yutaka Majima
• Keywords: Coulomb blockade

Single-electron transistors have the potential to become next-generation nanodevices and sensors owing their small size, low power consumption, high charge sensitivity, where charging energy of devices is most important parameter determining operational temperature. Here, we demonstrated that single-electron can be controlled (48 ± 4 meV) by adopting electroless gold plating make separation-defined nanogap electrodes employing size-controlled chemically synthesized Au nanoparticles (5.2 0.5 nm) as a Coulomb island. At this energy, operated up 160 K with on/off current ratio 60%.