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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
Published on: June 3, 2015
Logic operations of chemically assembled single-electron transistor.
Kosuke Maeda1, Norio Okabayashi, Shinya Kano
1Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503, Japan.
ACS Nano
|February 29, 2012
Summary
Chemically assembled double-gate single-electron transistors (SETs) using gold nanoparticles exhibit stable Coulomb oscillations. These SETs successfully perform all two-input logic operations, showcasing the potential of chemical assembly for advanced electronic devices.
Area of Science:
- Nanotechnology
- Materials Science
- Electronics
Background:
- Single-electron transistors (SETs) are crucial for future electronics.
- Developing stable and functional SETs is an ongoing challenge.
- Chemical assembly offers a novel fabrication approach.
Purpose of the Study:
- To fabricate double-gate single-electron transistors (SETs) using chemical assembly.
- To investigate the electrical characteristics and logic operation capabilities of the fabricated SETs.
- To demonstrate the potential of chemical assembly for creating stable SETs.
Main Methods:
- Fabrication of SETs via chemical assembly using electroless gold-plated nanogap electrodes.
- Chemisorption of chemically synthesized gold nanoparticles onto electrodes.
- Characterization of Coulomb oscillations and logic operations.
Main Results:
- Periodic and stable Coulomb oscillations were observed in the fabricated SETs.
- The SETs demonstrated all two-input logic operations (XOR, XNOR, NAND, OR, NOR, AND).
- An on/off ratio of 10^2 was achieved for the logic operations.
Conclusions:
- Chemical assembly is a viable method for fabricating highly stable SETs.
- The fabricated SETs exhibit promising performance for all fundamental logic operations.
- This work highlights the potential of nanoscale chemical assembly in electronic device fabrication.
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