Efficient White Light LEDs (IMAGE) American Institute of Physics Caption Light produced by a new type of light emitting diode (LED) are made from inexpensive, plastic-like organic materials. Credit Photo by Ma Dongge Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.