Special Seminar: 2D semiconductors for optoelectronic applications

Hosted by the Pritzker School of Molecular Engineering and Prof. Tian Zhong

Ruoming Peng, University of Washington-

"2D materials have exhibited rich distinct properties, which can cover a broad optical spectral range with strong light-matter interactions. Optoelectronic properties of 2D materials are usually sensitive to the local environment so that their properties can be easily controlled by the external field.

In this talk, I will mainly discuss how the external field can modulate the interlayer coupling of 2D materials. I will show two types of devices that can be controlled by external approaches. In the first device, we show that the electric field can modulate the optical absorption of black Phosphorus (bP) thin-film which leads to the applications such as mid-infrared photodetectors and modulators. In the second device, we show that the piezoelectric field of the surface acoustic wave can strongly interact with the transition metal dichalcogenides (TMDCs) so that the exciton can be spatially manipulated by the propagating acoustic waves."

To request a link to the zoom email quantum@uchicago.edu