Discussion D8.1 Kerns & Irwin Sections , 10-10

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Discussion D8.1 Kerns & Irwin Sections 10-1 -- 10-5, 10-10 Diodes and LEDs Discussion D8.1 Kerns & Irwin Sections 10-1 -- 10-5, 10-10

Covalent bonds -- Insulator http://electronics.howstuffworks.com/diode1.htm

Semiconductors Adding a very small amount of B or Ga to Si makes a p-type semi-conductor with a missing electron (a hole) Adding a very small amount of P or As to Si makes an n-type semi-conductor with an extra electron

Diodes + - http://www.mtmi.vu.lt/pfk/funkc_dariniai/diod/index.html

Light Emmitting Diode LED hn + - http://electronics.howstuffworks.com/led1.htm

Turning on an LED

Turning on an LED This is what we use in Lab