Our group performs time-resolved optical studies of excited-state dynamics in materials for applications in energy conversion, optoelectronics, and information science. We are associated with the Department of Chemical and Environmental Engineering and the Energy Sciences Institute at Yale University.

We are always looking for prospective PhD students with backgrounds in Engineering, Materials Science, Physics, Chemistry. Students interested in applying could reach out to Prof. Guo via email. We also have an opening for a postdoc fellow starting in early 2022. Interested candidates with backgrounds in optoelectronic material processing and characterization are encouraged to reach out to Prof. Guo via email.


April 25, 2022
Our paper entitled “Time-resolved vibrational-pump visible-probe spectroscopy for thermal conductivity measurement of metal-halide perovskites” has just been accepted by...
March 12, 2022
We finally got a chance to turn on our closed-cycle helium cryostat today, and it reaches 5 K in about two hours. Lots of future experiments unlocked!
February 25, 2022
Shunran’s Journal of Optics paper just went online! This article, in collaboration with Abram Falk from the IBM T.J. Watson Research Center, will appear in the Emerging...