Beckman’s Visualization Lab is open for office hours Monday, Tuesday, Thursday and Friday between 1-3 p.m. in 2203 Beckman, which is located just across the atrium bridge from the elevator.

Manager Juniper Cournoyer will be on hand to help users with the Vis Lab’s equipment and other resources for research. The Vis Lab offers data visualization software, high-performance computing, 3D art services, virtual reality content creation and high-speed photography. Have questions? Email itg-vl@beckman.illinois.edu.  

Professor William Jo, Department of Physics, Ewha Womans University, Seoul, South Korea, will lecture on "Enhanced Performance and Stability in Perovskite Solar Cells with Engineered Interface."

Abstract: 

The efficiency and stability of perovskite solar cells are significantly influenced by interfacial processes, where ionic migration and electronic transport are intertwined. This study presents an interfacial engineering approach to optimize carrier dynamics and reduce degradation in perovskite devices. Surface treatments with ammonium-based compounds at the ITO/SnO₂ interface reduce interfacial traps, improve electron extraction, and suppress charge accumulation, leading to enhanced stability and reduced hysteresis. Additionally, bromide-rich perovskites are compositional-tuned with lead thiocyanate additives to achieve controlled crystallization, improving grain orientation and reducing halide phase segregation. We also explore ion–electron coupling mechanisms at the SnO₂/α-FAPbI₃ interface, identifying ionic adsorption and space-charge formation as key degradation factors. To counteract these, we introduce a self-assembled 2D perovskite interlayer that limits ionic conductivity and stabilizes charge distribution. The resulting devices show a certified power conversion efficiency of 24.38% and maintain 91.87% of their initial efficiency after 2,000 hours of operation. These findings underscore the importance of interfacial phase control in enhancing perovskite solar cell performance and durability [1].

[1] J. H. Kim, J. S. Park, G. Y. Kim, and W. Jo, “Autonomously control of ion migration at FAPbI3 heterointerfaces via interfacial-self-assembled 2D perovskite”, Advanced Energy Materials 2402117 (2024).

Beckman’s Visualization Lab is open for office hours Monday, Tuesday, Thursday and Friday between 1-3 p.m. in 2203 Beckman, which is located just across the atrium bridge from the elevator.

Manager Juniper Cournoyer will be on hand to help users with the Vis Lab’s equipment and other resources for research. The Vis Lab offers data visualization software, high-performance computing, 3D art services, virtual reality content creation and high-speed photography. Have questions? Email itg-vl@beckman.illinois.edu.  

Beckman’s Visualization Lab is open for office hours Monday, Tuesday, Thursday and Friday between 1-3 p.m. in 2203 Beckman, which is located just across the atrium bridge from the elevator.

Manager Juniper Cournoyer will be on hand to help users with the Vis Lab’s equipment and other resources for research. The Vis Lab offers data visualization software, high-performance computing, 3D art services, virtual reality content creation and high-speed photography. Have questions? Email itg-vl@beckman.illinois.edu.  

Come find out more about the Beckman Institute for Advanced Science and Technology! Learn about the barrier-busting interdisciplinary research facility and community of innovation. Tours will be offered the first Tuesday of the month from 9:30-10 a.m.  Register here.

Join members of the Beckman community for informal conversation and coffee in the Garden!

Gather in the Garden will take place every Tuesday from 10-10:30 a.m.

Join us in 1005 Beckman September 1, 2026 for our first Fall Tech Talk with Abdelghany Abouelnagga, graduate student in ECE: "Scaling InGaN/GaN Micro-LEDs from Discrete Devices to Dense Arrays and GHz-Class Active Emitters for High-Speed Optical Links"  

The talk will present the micro-fabrication and characterization of scaled GaN micro-LEDs, with portions of the work carried out at the Beckman Institute. The work highlights how micro-LEDs can reshape data-center optical interconnects by enabling highly parallel, low-energy optical links with bandwidth scaling that conventional laser-based solutions struggle to sustain at extreme integration densities. The talk will then address the key challenges that still limit the incorporation of micro-LEDs into present data-center architectures, parasitic impedance, optical coupling, and array-level crosstalk. Finally, it will show how advanced electrical, optical, and RF characterization can identify the dominant bottlenecks and guide device- and process-level strategies to unlock the full potential of micro-LED-based optical links.

Beckman’s Visualization Lab is open for office hours Monday, Tuesday, Thursday and Friday between 1-3 p.m. in 2203 Beckman, which is located just across the atrium bridge from the elevator.

Manager Juniper Cournoyer will be on hand to help users with the Vis Lab’s equipment and other resources for research. The Vis Lab offers data visualization software, high-performance computing, 3D art services, virtual reality content creation and high-speed photography. Have questions? Email itg-vl@beckman.illinois.edu.  

Beckman’s Visualization Lab is open for office hours Monday, Tuesday, Thursday and Friday between 1-3 p.m. in 2203 Beckman, which is located just across the atrium bridge from the elevator.

Manager Juniper Cournoyer will be on hand to help users with the Vis Lab’s equipment and other resources for research. The Vis Lab offers data visualization software, high-performance computing, 3D art services, virtual reality content creation and high-speed photography. Have questions? Email itg-vl@beckman.illinois.edu.  

Beckman’s Visualization Lab is open for office hours Monday, Tuesday, Thursday and Friday between 1-3 p.m. in 2203 Beckman, which is located just across the atrium bridge from the elevator.

Manager Juniper Cournoyer will be on hand to help users with the Vis Lab’s equipment and other resources for research. The Vis Lab offers data visualization software, high-performance computing, 3D art services, virtual reality content creation and high-speed photography. Have questions? Email itg-vl@beckman.illinois.edu.