Jee, Ruyi (Duke-Blum group), Jie (ICCAS-Zhao group), and Linrui (Purdue-Huang group)’s paper entitled “Thickness control of organic semiconductor-incorporated perovskites” has been published in Nature Chemistry. Most complex perovskite single crystal structures resolved. 4 years of hard working has been paid off. Congratulations!
Read the story here. Purdue news release here; Duke news release here; featured in Phys.org; EurekAlert!; etc.
Our former postdoc, Dr. Enzheng Shi, now asst. prof at Westlake University, has published his team’s first independent paper in Science Advances entitled “Phase-pure 2D tin halide perovskite thin flakes for stable lasing“. This is an important first step. Congratulations!
Yanqi (Argonne National Lab, leading author) and Shuchen’s work on Photo-induced halide redistribution in 2D halide perovskite lateral heterostructures has been published in Joule. Big congratulations!
An improved understanding of the degradation pathways under external stimuli is needed to address stability challenges in two-dimensional (2D) perovskite semiconductor materials. In this study, in situ synchrotron nanoprobe X-ray fluorescence (nano-XRF) is used to investigate the evolution of halide redistribution within various 2D halide perovskite (n = 1–3) lateral heterostructures under ultraviolet (UV) exposure. Important fundamental insights on the photo-induced halide redistribution and structural transformation have been unveiled in this work. Read the story here.
The group welcomes two new visiting students: Prashant Kumar, PhD student from Central University of Jharkhand, India and Katerin Rodríguez, undergrad student from National University of Colombia to join the group. Prashant will stay for 1 year working on perovskite solar cells and Katerin will stay for 6 months working on polymer recycling. Welcome to Purdue and look forward to working together!
Quick updates on several important new publications:
1. Collaborative work with Savoie group led by Zih-Yu Lin and Jiaonan on Design Rules for Two-Dimensional Organic Semiconductor-Incorporated Perovskites (OSiP) using DFT/MD/machine learning + experiments has been published in Angew. Chem. Read the story here.
2. Collaborative work with Huang group led by Shuchen and Dewei “Unraveling the Effect of Stacking Configurations on Charge Transfer in WS2 and Organic Semiconductor Heterojunctions” has been published in Precis. Chem. Read the story here.
3. Jisung’ (MS student)’s work on “Reduced Energetic Disorders in Dion–Jacobson Perovskites for Efficient and Spectral Stable Blue LEDs” has been published in Adv. Opt. Mater. Read the story here.
4. Yoon Ho’s work on “One-Step Solution Patterning for Two-Dimensional Perovskite Nanoplate Arrays” has been published in ACS Nano. Read the story here.
Congratulations to the team!
The group warmly welcomes a new postdoc fellow Dr. Wenzhan Xu joining us. Wenzhan received his PhD in Materials Physics and Chemistry from South China University of Technology / University of Akron with Prof. Yong Cao and Prof. Xiong Gong. He also spent one year at UNC with Prof. Jinsong Huang. Wenzhan will work on large area perovskite solar cell and LED. Welcome to the group. Look forward to working together!
Zitang (Tim) Wei successfully defended his thesis! — Fifth PhD in our group. Big congratulations! Tim is heading to MIT to do a postdoc training with Prof. Michael Strano. Thank you for your hard work over the years. Best of luck in your future endeavors!
Ke and Jiaonan’s work on energy landscape management in 2D/3D heterojunction for efficient perovskite solar cells has been published in Science Advances.
In this work, the hole transfer energy barriers is reduced both at heterojunctions and within 2D structures, and the preferable work function shift reduces charge accumulation at interface. Using poly(triarylamine) (PTAA) hole transporting layer, a solar cell with power conversion efficiency of 24.6% has been achieved, which is the highest among PTAA-based n-i-p devices. The devices exhibit greatly enhanced stability and reproducibility.
We welcome a new visiting student Kagachi Tateno from Aoyama Gakuin University to join us. Kagachi received his BS in Chemistry and he is currently a master student. He will work on OSiP materials and devices for his 9 month stay. Welcome to the group and look forward to working together!
The group welcomes three SURF undergrad students visiting us this summer! Aline Carla Kruger from Drew University, working on synthesis of novel OSiPs; Tejaswini Haraniya from Case Western Reserve University, working on recyclable polymers; and Hithesh rai Purushothama from Arizona State University, working on perovskite solar cells. Lots of good helpers this summer! Look forward to working together!
Letian Dou Group 