Color LEDs

Color LEDs

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Credit: SIGRID GOMBERT/SCIENCE PHOTO LIBRARY

Caption: Computer generated artwork of colourful light emitting diodes (LED) arranged in a line. LEDs are made of two thin film layers of semiconducting material impregnated with impurities that create opposite electrical properties. Passing an electric current through the LED makes it produce light. The colour of the light depends upon the semiconducting material used.

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Keywords: diode, energy, energy saving lamp, green energy, led, led light, light emitting diode, technology

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