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Making an Integrated Circuit

Making an Integrated Circuit

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This podcast is drawn from the “Virtual Lab” of WeCanFigureThisOut.org. This Virtual Lab uses 3D virtual reality animations to explain electronics, microelectronics and nanotechnology. This podcast explains how the transistors of an integrated circuit are made.

Recent Episodes

  • Let's go inside an Intel 4004 microprocessor to see an individual transistor

    7 years ago

  • To make this transistor, first oxide then nitride layers are grown

    7 years ago

  • A shadow mask then exposes a photographic emulsion

    7 years ago

  • Exposed nitride is then etched away

    7 years ago

  • Oxygen reacts with the Si to grow more oxide

    7 years ago

  • By heating in silane, polycrystal Si is then grown

    7 years ago

  • A stripe is exposed in a second photographic emulsion

    7 years ago

  • Exposed polycrystal Si is etched away leaving the transistor gate

    7 years ago

  • Phosphorus ions then penetrate thin oxide to create the source and drain

    7 years ago

  • Heating in oxygen grows an insulating coat on the gate

    7 years ago