UNIST 반도체 소자 및 3차원 집적 연구실 (지도교수 정재용)은 차세대 반도체 시스템을 위한 고성능 전자소자 및 3차원 집적 기술을 연구합니다. 특히, RF 및 Power 반도체 소자, 극저온 소자, 그리고 3차원 집적 기술을 중심으로 AI, 양자컴퓨팅, 차세대 무선통신 등 미래 핵심 산업을 위한 반도체 기술을 개발하고 있습니다. 소자-회로-3차원 집적을 아우르는 연구를 통해 차세대 반도체 플랫폼을 구현하는 것을 목표로 합니다.
Our lab focuses on developing high-performance semiconductor devices and advanced 3D integration technologies for next-generation semiconductor systems. Our research centers on RF and power semiconductor devices, cryogenic electronics, and heterogeneous 3D integration, targeting key applications in artificial intelligence, quantum computing, and next-generation wireless communications. By bridging device physics, circuit-level implementation, and 3D integration, we aim to realize next-generation semiconductor platforms.
Curriculum Vitae
2026 – present: Assistant Professor, UNIST
2025 – 2026: Postdoctoral Researcher, IBM Research, Switzerland
2024 – 2026: Postdoctoral Researcher, KAIST, South Korea
Education
2024: Ph.D., Electrical Engineering, KAIST
2021: M.S., Electrical Engineering, KAIST
2019: B.S., Materials Science and Engineering, GIST
Research Keywords and Topics
Semiconductor devices
3D integration
RF and Power devices
Cryogenic devices
Quantum computing systems
Publications (selected)
J. Jeong, S. K. Kim, Y. -J. Suh, J. Lee, J. Choi, J. P. Kim, B. H. Kim, J. Park, J. Shim, N. Rheem, C. J. Lee, Y. Jo, D. -M. Geum, S. -Y. Park, J. Kim, and S. -H. Kim*, “Cryogenic III-V and Nb electronics integrated on silicon for large-scale quantum computing platforms”, Nature Communications, 15, p. 10809 (2024)
J. Jeong, S. K. Kim, J. Kim, D. -M. Geum, D. Kim, E. Jo, H. Jeong, J. Park, J. -H. Jang, S. Choi, I. Kwon, and S. -H. Kim*, “Heterogeneous and monolithic 3D integration of III-V-based RF devices on Si CMOS circuits”, ACS Nano, 16, p. 9031 (2022)
J. Jeong, J. -T. Lim, Y. -J. Suh, N. Rheem, C. -J. Lee, B. H. Kim, J. P. Kim, J. Kim, J. Lee, C. -Y. Kim, and S. Kim*, “Fully Heterogeneous and Monolithic 3D integrated RF platform with III-V HEMTs on Si CMOS for Next-Generation Wireless Communication Systems”, IEEE Symposium on VLSI Technology and Circuits (VLSI), Kyoto, Japan (2025)
J. Jeong†, C. -J. Lee†, S. -J, Choi, N. Rheem, M. Song, Y. -J. Suh, B. -H. Kim, J. -P. Kim, J. Shim, J. Lee, M. Park, Y. Koh, D. -H. Kim, S. -H. Kim*, “Vertically Integrated Active Power Delivery Network (PDN) for Heterogenous 3D (H3D) Stacked Systems: 3D On-chip Integration of GaN Power Devices on PDN with Direct Heat Spreading Layer Bonding”, IEEE International Electron Device Meeting (IEDM), San Francisco, CA, USA (2024)
J. Jeong, S. J. Choi, J. Shim, E. Kim, S. K. Kim, B. H. Kim, J. P. Kim, Y. -J. Suh, W. J. Beak, D. -M. Geum, Y. Koh, D. Kim, and S. H. Kim*, “Thermal Management in Multi-Finger GaN-on-Si HEMTs: Understanding and Mitigating Self-Heating and Thermal Crosstalk for Enhanced Device Reliability”, IEEE International Electron Device Meeting (IEDM), San Francisco, CA, USA (2023)
Awards/ Honors/ Memberships
2025, Jang Young Sil Fellow Program (Postdoctoral Researcher Track)
2024, Top-ranked student papers in IEDM 2024
2023, IEEE EDS PhD Student Fellowship
2023, Top-ranked student papers in IEDM 2023
2023, Highlight paper in VLSI 2023
2022, The 29th Korean Conference on Semiconductors – Excellent paper award
2021, The 27th Samsung HumanTech Paper Award – Bronze medal