21st Century Scientists: Malika Jefferies-EL

In this 21st Century Chemist profile, Iowa State University organic chemist Malika Jeffries-EL explains her work to make less costly, more energy-efficient semiconductors and LEDs from organic, carbon-based materials such as plastics, "doping" the organic materials so that they are more conductive.

Provided by the National Science Foundation & NBC Learn

Runtime: 4:57

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