Hyeongwoo Lee
Ulsan National Institute of Science and Technology
26 Papers
14 Citations
Hyeongwoo Lee is an academic researcher from Ulsan National Institute of Science and Technology. The author has contributed to research in topics: Exciton & Photoluminescence. The author has an hindex of 2, co-authored 14 publications.
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Papers
Tip-enhanced photoluminescence nano-spectroscopy and nano-imaging
TL;DR: In this article, a review of tip-enhanced photoluminescence (TEPL) nano-spectroscopy is presented, where the authors discuss the fundamental working mechanism of PL enhancement by plasmonic tip and highlight recent advances in TEPL studies for low-dimensional quantum materials.
Tunable interlayer excitons and switchable interlayer trions via dynamic near-field cavity
Yeonjeong Koo,Hyeongwoo Lee,T. Yu. Ivanova,Ali Kefayati,Vasili Perebeinos,Ekaterina Khestanova,Vasily Kravtsov,Kyoung-Duck Park +7 more
TL;DR: In this article , the authors present an all-round dynamic control of interlayer-excitons and trions in a WSe2/Mo0.5 W 0.5 Se2 heterobilayer using multifunctional tip-enhanced photoluminescence spectroscopy with <20 nm spatial resolution.
Tip-Induced Strain Engineering of a Single Metal Halide Perovskite Quantum Dot.
Hyeongwoo Lee,Ju Young Woo,Dae Young Park,Inho Jo,Jusun Park,Yeunhee Lee,Yeonjeong Koo,Jinseong Choi,Hyojung Kim,Yong-Hyun Kim,Mun Seok Jeong,Sohee Jeong,Kyoung-Duck Park +12 more
TL;DR: In this article, a tip-induced control approach combined with tip-enhanced photoluminescence (TEPL) spectroscopy was proposed to engineer strain, bandgap, and the emission quantum yield of a single perovskite quantum dot.
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Dynamical control of nanoscale light-matter interactions in low-dimensional quantum materials
Yeonjeong Koo,Taeyoung Moon,Mingu Kang,Huitae Joo,Changjoo Lee,Hyeongwoo Lee,Vasily Kravtsov,Kyoung-Duck Park +7 more
TL;DR: This review explores dynamical control of nanoscale light-matter interactions in low-dimensional quantum materials using tip-enhanced nanospectroscopy and imaging, presenting three approaches: cavity-gap control, pressure control, and near-field polarization control, for precise engineering of radiative emissions and material properties.
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Recent progress of exciton transport in two-dimensional semiconductors
Hyeongwoo Lee,Yong Bin Kim,Jae Won Ryu,Sujeong Kim,Jinhyuk Bae,Yeonjeong Koo,Donghoon Jang,Kyoung-Duck Park +7 more
TL;DR: This review summarizes recent advancements in controlling exciton currents in 2D semiconductors using electric fields, strain gradients, surface plasmon polaritons, and photonic cavities, addressing challenges in exciton transport for optoelectronic applications.
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