New UG students

The group welcomes two new undergrad students:

Cindy Martinez is visiting us from Universidad de los Andes (Colombia) for the summer.

Adam Troutman is a junior student at Purdue Chemical Engineering.

Welcome to the lab!

Alumni news

Congratulations to our Alumni:

Undergrad student Dong Hee Kim to join SK Corp. in Korea as an Engineer.

Visiting student Xiaofeng Xiang to join University of Washington, Seattle [Molecular Engineering] as a PhD student

Master student Xue Wang to join Colorado School of Mines [Chemical Engineering] as a PhD student

ACS Nano paper

Enzheng and Shibin’s paper about 2D perovskite edge states is published in ACS Nano. Congratulations!

We report the formation mechanism and the dynamic nature of edge states on the exfoliated 2D halide perovskites thin crystals. In contrast to other 2D materials, the edge states in 2D perovskites are extrinsic and composed of multiple low energy states due to interaction with moisture.  We demonstrate that the charge carriers on the dynamically formed edge states are not only long-lived, but also highly mobile and can be conducted along the edges effectively with high mobilities of 5.4-7.0 cm2V-1s-1. This work provides significant insights on the origin of the edge states in 2D perovskites and provides routes to manipulate their optical and electrical properties through controlling their edges.