Light Emitting Diodes Module

Exploring the Nanoworld: Materials Science and Nanotechnology for Teaching K-12 Science, University of Wisconsin-Madison

LIGHT EMITTING DIODES (LEDs)

Index
Curriculum Suggestions
Sample Lesson Plan
Light Emitting Diodes Overview
More Information on Light Emitting Diodes

Demonstrations
(1) Electron Flow Within an Energy Band

(2) Changing Conductivity By Adding or Removing Electrons

(3) Investigating Electronic Properties of a p-n Junction

(4) Relationship Between Composition and Wavelength of LEDs

Student Follow-up Questions

Investigations
(1) What Makes Graphite a Good Conductor?
Teacher VersionStudent Version

(2) The Crystal Structure of Light Emitting Diodes
Teacher VersionStudent Version

Experiments
Teacher VersionStudent Version

Review Materials
Teacher VersionStudent Version

Assessment
Teacher VersionStudent Version

HOME

INTRO MATERIALS

CARBON NANOTUBES

MEMORY METAL

DIFFRACTION AND SPM

LEDs

MRSEC HOME

These modules have been created by Ann Pumper, Bruce Swanson, Jeremiah Neubert, Cindy Widstrand, and Arthur Ellis.
Funding for this project has been made possible through the National Science Foundation's Materials Research Science and Engineering Center's Research Experience for Teachers program and the GK-12/K-Through-Infinity Professional Development program.