Michael Grätzel (born 11 May 1944, in Dorfchemnitz, Saxony, Germany)[3] is a professor at the École Polytechnique Fédérale de Lausanne where he directs the Laboratory of Photonics and Interfaces.

Graetzel is the holder of 10 honorary doctorates in Universities of Asia and Europe: Denmark, Holland, China, Sweden, Singapore and other countries.

[10] He was a frequent guest scientist at the National Renewable Energy Laboratory (NREL) in Golden, Colorado, was a fellow of the Japanese Society for the Promotion of Science.

In 2007 he was awarded the Harvey Prize of Technion for pioneered research on energy and electron transfer reactions in mesoscopic-materials and their optoelectronic applications.

[15] Graetzel holds honorary doctorates from Faculty of Science and Technology at Uppsala University, Sweden[16] (1996), Turin and Nova Gorica.