Author: LetianDou

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.

Read the full story here. Purdue News Release here.

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!

The group warmly welcomes a new postdoc fellow Dr. Pengfei Wu joining us. Pengfei received his PhD in Polymer Chemistry from Hokkaido University in Japan with Prof. Tamaki Nakano. Pengfei will work on synthesis of novel chemically recyclable polymers and polymer single crystals. Welcome to the group. Look forward to working together!

Dr. Dou was selected to receive 2023 College of Engineering Faculty Excellence Award for Early Career Research. Big thank to all students, mentors, and collaborators! Read ChE news release here.

Sheng-Ning Hsu successfully defended his thesis today! — Forth PhD in our group. Big congratulations! Sheng-Ning is heading to First Solar in Ohio as a process engineer. Thank you for your hard work over the years with Boudouris and Dou groups. Best of luck in your future endeavors!

Jiaonan and Ke’s work entitled “Tailoring Molecular‐Scale Contact at Perovskite/Polymeric Hole Transporting Material Interface for Efficient Solar Cells” has been published in Advanced Materials. Congratulations!

Poly(triaryl amine) (PTAA) is a promising HTL for perovskite solar cells; however, the hydrophobicity of PTAA causes problematic interfacial contact with perovskite, limiting the device performance to less than 22%. In this work, we successfully constructed a uniform two-dimensional (2D) perovskite interlayer with conjugated ligands 4Te, between three-dimensional (3D) perovskites and PTAA. Perovskite/PTAA interfacial adhesion was significantly improved and a PCE of 23.7% was achieved. Unencapsulated devices exhibited both superior thermal and moisture stability. Read the story here.

High school student Raunak Dani is selected to represent Indiana as a state at the International Science and Engineering Fair (ISEF) in Dallas, Texas this May. Congratulations!

We welcome a new visiting postdoc Dr. Limei Wang from Shenzhen University to join us. Dr. Wang recived her PhD in Chemical Engineering and Technology from Xiamen and Yanshan University and she is an expert on nanomaterials and photocatalysts. Welcome to the group and look forward to working together!

Wenhao’s invited perspective article entitled “Light-Emitting Organic Semiconductor-Incorporated Perovskites: Fundamental Properties and Device Applications” has been published in J. Phys. Chem. Lett. Congratulations! Read the story here.