Black Silicon

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Black Silicon
MEEN 3344 Materials Science Luis Alfonso Medeles
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Black Silicon

• Silicon
• Dark grey Metalloid.
• 2nd Most abundant element on Earth.
• Used to build semiconductors.

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Black Silicon

• Discovery of black Silicon
• In Harvard on 1999 by accident.
• Students scraped silicon with laser. It turned
  black.
• Wouldnt let any light out.
• Efficient electron emitter in an electric field.

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Black Silicon

• Applications
• Solar Cells- More effective absorption of suns
  energy
• TV monitors- Ultra thin monitors
• Satellites- Black silicon field emitters to steer
  small satellites.
• Telecommunication along fiber optic cables.

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Black Silicon

• Disadvantages
• Still in lab phase.

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Black Silicon

• References
• http//www.hno.harvard.edu/gazette/1999/12.09/sili
  con.html
• http//www.wikipedia.org
• www.electroabrasives.com
• http//mazur-www.harvard.edu/research/detailspage.
  php