Introduction
Introduction
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Professor
Hwan-Hee Cho (조환희)
Hwan-Hee Cho (조환희)
Department of Materials Science and Engineering
Yonsei Univ. (Office B319)
Tel. 02-2123-2839
Email : chohh@yonsei.ac.kr
Education
2019 - 2022
Ph.D. in Physics, Cavendish Laboratory, Department of Physics, University of Cambridge2007 - 2009
M.S. in Materials Science and Engineering, Seoul National University2001 - 2005
B.S. in Materials Science and Engineering, Hanyang University
Career
2025 - Present
Assistant Professor, Materials Science and Engineering, Yonsei University2022 - 2024
Postdoctoral Researcher, Cavendish Laboratory, Department of Physics, University of Cambridge2012 - 2018
Engineer/Senior Engineer, Samsung Display2010 - 2012
Engineer, Samsung Mobile Display
Research interests
Optoelectronic devices based on organic semiconductors
- Design of novel light-emitting systems
- Device engineering and characterization
Exciton dynamics in organic semiconductors
- Steady-state and time-resolved spectroscopy
- Intermolecular and intramolecular energy transfer
Selected publications
‘TADF host engineering for improved pure blue matrix-free hyperfluorescent OLEDs with ultranarrow emission’ Advanced Optical Materials, 13, 2500246 (2025)
‘Efficient near-infrared organic light-emitting diodes with emission from spin doublet excitons’ Nature Photonics, 18, 905-912 (2024)
‘Suppression of Dexter transfer by covalent encapsulation for efficient matrix-free narrowband deep blue hyperfluorescent OLEDs’ Nature Materials, 23, 519–526 (2024)
‘Efficient and Bright Organic Radical Light-Emitting Diodes with Low Efficiency Roll-Off’ Advanced Materials, 35, 2303666 (2023)
‘Circularly polarized electroluminescence from chiral supramolecular semiconductor thin films' Science, 387, 1175-1181 (2025)
'Deep-blue and Fast Delayed Fluorescence from Carbene-Metal-Amides for Highly Efficient and Stable Organic Light-Emitting Diodes' Advanced Materials, 36, 2404357 (2024)
Honors and Awards
17th POSCO Science Fellowship, POSCO TJ Park Foundation (2026)
George and Lilian Schiff Foundation PhD Studentship (October 2019 ~ July 2022)
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