Light Emitting Diodes

By Nano-Link Center for Nanotechnology Education1, Sam Levenson2, James J Marti3

1. Nano-Link Center for Nanotechnology Education, Dakota County Technical College, Rosemount, MN 2. Harper College 3. Minnesota Nano Center, University of Minnesota, Minneapolis, MN

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This module demonstrates the concepts of semiconductor band gaps and the quantum nature of light using readily available and inexpensive LEDs.  It uses a simple fact which surprises many students – LED can detect light (i.e., act as small solar cells) as well as generate light. The lab can be completed in a 1.5 hour period in addition to prior introductory lecture and post lab discussion.

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Sponsored by

National Science Foundation

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Researchers should cite this work as follows:

  • Nano-Link Center for Nanotechnology Education, Sam Levenson, James J Marti (2020), "Light Emitting Diodes,"

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Billie Copley

Dakota County Technical College/ Nano-Link: Center for Nanotechnology Education