Gerhard Ertl Lecture & Award

The Ertl Lecture Award was established in 2008 by the three Berlin universities (Humboldt University, Technical University and Free University) and the Fritz Haber Institute of the Max Planck Society and is awarded once a year. It commemorates former FHI Director Gerhard Ertl's Nobel Prize in Chemistry, which he received in 2007. The prize honours outstanding personalities and researchers in the field of catalysis where Ertl carried out exceptional research for many decades. The prize, sponsored by BASF, includes a one-week research stay at the participating Berlin institutions and a keynote lecture. The winner is typically announced in Spring, the lecture takes place around the December 10th, the anniversary of Ertl's Nobel Prize reception.

Tracking Singlet Fission in Momentum Space

• PC Online Talk
• Date: Dec 10, 2020
• Time: 10:00 AM (Local Time Germany)
• Speaker: Alexander Neef
• FHI Department PC

In organic materials with strong exchange interactions, the S = 0 (singlet) exciton might have twice the energy of the S = 1 (triplet) exciton. This allows the spin-conserving fission of the optically prepared singlet to two dark antiparallel triplets. Due to the many-body nature of this process, consensus over the underlying mechanism is still lacking. Here, we use trARPES to resolve the transient states involved in singlet fission in pentacene and provide new insights into the microscopic and ultrafast processes governing it. [more]