Kim Jae-hyuk, a master’s student in the research group led by Professor Kim Younghoon of the Department of Chemistry at Kookmin University (President Jeong Seung Ryul), has developed a technology for the mass production of highly uniform perovskite quantum dots through a joint research project with the research group led by Professor Kim Hyung Min of the Department of Chemistry at Kookmin University and the research group led by Professor Choi Jongmin of the Department of Energy Engineering at the Daegu Gyeongbuk Institute of Science and Technology (DGIST).

The results of this study were published in the international energy journal *ACS Energy Letters* under the title “Precursor Diffusion-Controlled Scalable Synthesis of Monodisperse Iodide Perovskite Quantum Dots for Photovoltaics.” This journal is a prestigious international publication with an Impact Factor of 17.5, ranking in the top 5.7% of the JCR.

Perovskite quantum dots are attracting attention as a key material for next-generation solar cells due to their excellent optical and electrical properties. However, existing synthesis methods suffer from the limitation that, as the scale of synthesis increases, particle size and quality become inconsistent due to the extremely fast reaction rate. Consequently, there have been difficulties in stably mass-producing high-quality quantum dots and applying them to high-efficiency solar cells.

To overcome these challenges, the research team developed a highly uniform, large-scale synthesis method based on precursor diffusion control, which separates and controls the nucleation and crystal growth stages by precisely regulating the diffusion rate of the precursor. Using this proposed synthesis method, the team demonstrated a photoconversion efficiency exceeding 15% even in devices fabricated via mass production, significantly increasing the potential for industrial-scale manufacturing.

Kim Jae-hyuk, a master’s student in the Department of Chemistry at Kookmin University (advisor: Professor Kim Younghoon), participated in this research as a co-first author, adding to its significance. Following the publication of a paper as sole first author in the SCI-indexed international journal *Nano Research* (IF=9.0, top 13% in JCR) in 2025, Kim Jae-hyuk has achieved the remarkable feat of consecutively publishing papers in top-tier international journals in the energy field. He is also continuing to demonstrate his research capabilities in the materials and energy fields, as evidenced by receiving the Outstanding Paper Presentation Award from the Korean Society of Polymer Science.

Meanwhile, this research was conducted with Kim Jae-hyuk, a master’s student in the Department of Chemistry at Kookmin University; Dr. Kim Ji-geon; and Dr. Han Sang-hoon of DGIST serving as co-first authors, while Professors Kim Hyung Min andKim Younghoon of Kookmin University and Professor Choi Jongmin of DGIST served as co-corresponding authors.

△ (Left) Materials related to the mass synthesis of perovskite quantum dots by Ko Gyun-il (Right) Kim Jae-hyuk, a master’s student in the Department of Chemistry at Kookmin University