9 June 2009

  • curprev 18:0418:04, 9 June 2009‎ S.Keating talk contribs‎ 241 bytes 0‎ uploaded a new version of "Image:Blue LED.jpg": A blue light emitting diode (LED) is seen here. Blue and ultraviolet LEDs are made using InGaN and GaN semiconductors. Currently, white LEDs are often made using a phosphor coating which is optical pumpe undo
  • curprev 17:4117:41, 9 June 2009‎ S.Keating talk contribs‎ 241 bytes +241‎ A blue light emitting diode (LED) is seen here. Blue and ultraviolet LEDs are made using InGaN and GaN semiconductors. Currently, white LEDs are often made using a phosphor coating which is optical pumped by InGaN and GaN active materials.
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