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Extreme ultraviolet (EUV) light can precisely remove hydrogen from silicon surfaces, enabling scalable fabrication of quantum devices. This technique bypasses traditional resists for advanced semiconductor manufacturing.

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Area of Science:

  • Materials Science
  • Surface Science
  • Quantum Computing

Background:

  • Atomically precise fabrication of quantum-electronic devices relies on scanning tunnelling microscopy (STM) for single-atom precision.
  • Scaling up STM-based lithography to industrial levels necessitates integration with semiconductor manufacturing processes.

Purpose of the Study:

  • To demonstrate the use of extreme ultraviolet (EUV) light for hydrogen desorption from silicon surfaces.
  • To bridge the gap between laboratory-scale STM precision and industrial semiconductor manufacturing.

Main Methods:

  • Utilized extreme ultraviolet (EUV) light for hydrogen desorption from a monohydride Si(001):H surface.
  • Employed scanning tunnelling microscopy (STM), X-ray photoelectron spectroscopy (XPS), and photoemission electron microscopy (XPEEM) for characterization.

Main Results:

  • Quantified hydrogen desorption characteristics induced by secondary electrons from valence band excitations.
  • Demonstrated compatibility with the 13.5 nm EUV photolithography standard.
  • Indicated potential for useful exposure times with existing EUV infrastructure.

Conclusions:

  • EUV light enables resistless patterning of silicon surfaces.
  • This method offers a pathway for parallel processing in fabricating classical and quantum devices via deterministic doping.