Dr. Rekha Sharma

Dr. Rekha Sharma

Postdoctoral Researcher

Research Area A

Cluster of Excellence livMatS @ FIT – Freiburg Center for Interactive Materials and Bioinspired Technologies



Correlating redox properties of organic materials with triboelectric charge-separation – from basic understanding to novel materials for efficient triboelectric energy harvesting
Charge separation at interfaces is the mechanism underlying the triboelectric effect. This can be exploited to harvest mechanical energy from the surroundings in functional materials systems. In this project novel organic materials will be developed to make triboelectric charge separation more efficient and with the ultimate goal to increase the performance of triboelectric nanogenerators used for energy harvesting. This will be preceded by a fundamental study on the effect of the redox activity of organic moieties on triboelectric charge separation by atomic force microscopic studies. Theoretical investigations will provide insight into the physical origins of the charge separation. The results of these fundamental studies will allow selecting the best organic moieties for incorporation into materials (i.e polymers), which will then be synthesized and used in macroscopic devices to investigate triboelectric charge separation at their interfaces.

First supervisor

Prof. Dr. Birgit Esser