Letian Dou Group

Wenhao and Jeong Hui’s paper on the molecular templating of layered halide perovskite nanowires have been published in Science. Congratulations!

Dr. Phil Szuromi’s summary: “A templating method enables the growth of two-dimensional metal-halide perovskite nanowires that exhibit polarized photoluminescence and enable low-loss waveguiding. Shao et al. grew nanowires of (BrCA3)₂PbBr₄, where BrCA3 is 2-(2-bromo-5-carboxyphenoxy)ethan-1-aminium. The carboxylic acid group of BrCA3 inhibited the growth of all crystal facets except [110], which led to one-directional growth. The nanowires also achieved efficient light amplification, with a threshold of less than 20 microjoules per square centimeter.” Read the full story here. The story is highlighted by Purdue and many news outlets.

The group welcomes Chenyu Li from Georgia Tech to join the SURF program this summer. Chenyu will work on synthesis and characterization of 2D perovskite nanostructures and nanowires. Welcome to the group!

In addition, our existing group member Anika Bhoopalam is also selected for the SURF award and will be co-advised with Prof. Arun Mannodi Kanakkithodi and work on novel low band gap perovskite absorbers this summer. Congratulations!

Jee receives 2024 Carbon Future Young Researcher Honorable Mention Award from Carbon Future editorial office and Tsinghua University Press. Congratulations!

Jee Yung Park successfully defended his thesis! — Sixth PhD in our group. Big congratulations! Jee is heading to Yale to do a postdoc training with Prof. Peijun Guo. Thank you for your hard work over the years. Best of luck in your future endeavors!

Jee and Yoonho’s paper on the bias-induced ion migration in 2D perovskite heterostructures have been published in Matter. Congratulations!

We fabricate a 2D perovskite single-crystal heterostructure device that can visualize real-time movement of halide anions under external electric bias. Directional movement as well as the favored channels of ion migration are investigated, while post-migration device characteristics are revealed to exhibit asymmetry due to directional ion migration. Read the full story here. A temporary sharable link here.

Dr. Yoonho Lee joins Sungshin Women’s University as an Assistant Professor.

Dr. Jiaonan Sun joins City University of Hong Kong as a postdoc (with Prof. Alex Jen) and will transit to South China University of Technology as an Assistant Professor in 2025.

Thank you both for the great work at Purdue and good luck with your future endeavors!

Jiaonan receives Davidson School of Chemical Engineering’s Special Employee Recognition Award.

Jee receives Davidson School of Chemical Engineering’s Graduate Student Recognition Award.

Congratulations!

Jeonghui passes her PhD qualifier exam. Congratulations!

Dr. Dou receives a prestigious Humboldt Research Fellowship (from the Alexander von Humboldt Foundation) and will spend several months visiting University of Cologne in Germany (hosted by Prof. Malte Gather). Congratulations!

Yu-Ting Yang, Zhixu Li, and Mona Hosseinzade join our group as first-year graduate students.

Mona receives her BS and MS in Isfahan University of Technology and Amirkabir University of Technology, respectively. She will be coadvised with Prof. Jianguo Mei and work on solar cells. Zhixu receives his BS and MS in Fuzhou University and Tianjian University, respectively. He will work on recyclable polymers and polymer crystallization. Yu-Ting receives her BS in Chemical Engineering from National Taiwan University. She will work on perovskite light emitters and LEDs.

Welcome to the group and look forward to working together!