Home›Neuroscience›Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
NeuroscienceJoVE (Open Access)Citable · DOI
Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
DOI: 10.3791/52852-v
What you'll learn
✓Fabricate silicon MOS quantum dots with field oxide and gate structures
✓Perform device integrity testing at millikelvin temperatures
✓Characterize single-electron pump performance and functionality
Protocol
Biopharma Insights The fabrication process and experimental characterization techniques relevant to single-electron pumps based on silicon metal-oxide-semiconductor quantum dots are discussed.
Difficulty
advanced
Total time
~2–4 weeks (fabrication and characterization combined)
Steps
1
Create field oxide layer and ohmic contacts
Deposit and pattern the field oxide layer to isolate device regions, then form ohmic contacts for electrical connection to the quantum dot structure.
▶ 03:11
2
Deposit and pattern gate oxide layer
Grow or deposit the gate oxide dielectric layer and pattern it to define the gate geometry for quantum dot formation.
▶ 03:11
3
Pattern gate electrode structure
Use lithography and etching to define the gate electrode pattern that controls the quantum dot and single-electron transport.
▶ 07:10
4
Test device integrity and electrical properties
Perform electrical characterization tests to verify device fabrication quality and measure leakage currents or breakdown behavior.