1st stage in manufacture of silicon chip

1st stage in manufacture of silicon chip

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Credit: MALCOLM FIELDING, THE BOC GROUP PLC/ SCIENCE PHOTO LIBRARY.

Caption: The first stage in the manufacture of a silicon chip (integrated circuit). A small crystal "seed" of silicon is suspended in molten polysilicon, contained in a graphite crucible and heated by a graphite element. The seed is rotated in the melt and slowly withdrawn to grow a larger, cylindrical crystal of silicon. The eventual cylindrical mass may be 75-100 millimeters (mm) in diameter and up to 1 metre long. After polishing & grinding to exact dimensions, individual wafers of between 0.25 and 0.5mm thickness are sliced from the block. Crystalline silicon wafers form the bases for the ultimate integrated circuits.

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Keywords: chip manufacture, czochralski process, electronic, electronics, high-tech, integrated circuit, microchip, molten, polysilicon, semiconductor industry, silicon, technology

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