Yoomi completed her Master’s degree in Physics at Pukyong National University (PKNU) in 2024 under the guidance of Prof. Sung Heum Park. Her research focused on interfacial engineering, developing strategies to optimize energy levels, minimize defects, and improve thin-film quality of halide perovskite material devices. During her studies, she was a visiting researcher at the A*STAR IMRE in Singapore, where she worked with Dr. Yang Le on functional layers and interfacial modifications in organic optoelectronic devices. In January 2025, Yoomi returned to Singapore to start her PhD program at NUS and joined the Park research group.