The XYZ Lab at Columbia University

Light-matter interaction, solar energy conversion, ultrafast spectroscopy

Group members | Publications

Research highlights

A main research thrust in the XYZ lab is to establish new photophysical mechanisms that may be utilized to revolutionize solar energy conversion or light emission. As examples, recent discoveries in our lab showed how an electron and a hole is bound by the Coulomb potential across an organic semiconductor interface, how one can extract hot electrons from a photoexcited quantum dot, and how an exciton can split into two via the singlet fission process.

How to draw energy level diagrams in excitonic solar cells?

J. Phys. Chem. Lett. 5, 2283 (2014).


Hot charge transfer excitons set the time limit for charge separation at donor/acceptor interfaces in organic photovoltaics

Nature Mater. 12, 66 (2013).

Observing the multi-exciton state in singlet fission and ensuing ultrafast multi-electron transfer

Science 334, 1541 (2011).

XYZ Lab News

1/2014: We moved into the new state-of-the-art laboratories in NWC.

4-7/2014: Francois de Kerret comes as an exchange student from Ecole Polytechnique in Paris, France

4/2014: Congratulations to Dr. Wesker Lei who successfully defended his PhD thesis.

5/2014: Dr. Haiming Zhu joins the group as a postdoctoral fellow. He comes to us with a PhD in Chemistry from Emory University.

7/2014: Congratulations to Dr. Loren Kaake who joins Simon Fraser University in Canada as an Assistant Professor of Chemistry.

7/2014: Congratulations to Dr. Josh Morris. who joins Georgia Gwinnett College as an Assistant Professor of Chemistry.

9/2014: Congratulations to Dr. Martin Gustafsson whose ground-breaking paper just came out in Science (DOI: 10.1126/science.1257219).