Bio

MinJae Kim is a first-year PhD student and Kwanjeong Doctoral Study Abroad Fellow in Materials Science and Engineering at Stanford University. He received a BS in Materials Science and Engineering at KAIST. Before joining Stanford University, he was a National Presidential Science Scholar, KAIST Presidential Fellow, National University of Singapore (NUS) Young Fellow, and Young Future Energy Leader selected by Khalifa University.

He has received many awards and honors, including the national delegation at the Lindau Nobel Laureate Meeting and Global Young Scientists Summit, an invitation to the Nobel Ceremony, and the membership in the Young Engineers’ Honor Society nominated by the National Academy of Engineering of Korea. With these achievements, he has received many recognitions from the Korean government, such as the Talent Award of Korea (Ministry of Education) and a cadetship as the Research Officer for National Defense (Ministry of Defense, Ministry of Science and ICT).

Education & Certifications

  • BS, Korea Advanced Institute of Science and Technology (KAIST), Materials Science and Engineering (2025)

Contact

  • Academic
    mj3259@stanford.edu
    University - Student Department: Materials Science and Engineering Position: Graduate

Additional Info

Links

Current Research and Scholarly Interests

Metasurfaces, Bioimaging, Optoelectronic materials and devices

All Publications

  • Near-planar light outcoupling structures with finite lateral dimensions for ultra-efficient and optical crosstalk-free OLED displays NATURE COMMUNICATIONS Kim, M., Kim, J., Yoo, S. 2025; 16 (1): 11606

    Abstract

    The stratified structure of organic light-emitting diodes (OLEDs) confines much of the generated light within substrates or organic layers, limiting outcoupling to air. Macroscale half-ball lenses extract most substrate-trapped light but compromise the inherent planarity of OLEDs, while microlens arrays (MLAs), only tens of micrometres tall, preserve planarity yet provide only modest enhancements, particularly with limited lateral dimensions. Here, we introduce a systematic strategy to enhance outcoupling while maintaining near-planarity. By jointly tailoring the OLED device stack and the topography of near-planar outcoupling structures, we overcome the limited prompt extraction responsible for the modest performance of conventional MLAs. Our optimized devices reach an external quantum efficiency of 48.0% and a current efficiency of 192 cd A⁻¹, surpassing bare OLEDs (35.6%, 102 cd A⁻¹) and MLA-attached OLEDs (35.4%, 150 cd A⁻¹). This approach addresses trade-offs among intrusiveness, aperture ratio, and performance, providing a promising route to ultra-efficient, optical-crosstalk-free OLED displays.

    View details for DOI 10.1038/s41467-025-66538-6

    View details for Web of Science ID 001651009000004

    View details for PubMedID 41285816

    View details for PubMedCentralID PMC12749176

  • Ultralow-power carbon dioxide sensor for real-time breath monitoring DEVICE Kim, M., Choi, D., Kang, C., Yoo, S. 2025; 3 (5)

    View details for DOI 10.1016/j.device.2024.100681

    View details for Web of Science ID 001502065700004

https://orcid.org/0000-0003-3995-8016