Seokhyun Yoon Professor
Department of Physics
Seokhyun Yoon is a professor in the Department of Physics. He is an expert in experimental condensed matter physics, especially Raman scattering spectroscopy and ellipsometry studies of various condensed matter. Recent research interests include characteristics of elementary excitations in materials for optoelectronic applications, low-dimensional nano-structured materials such as nanowires and single atomic layered materials, and experimental and theoretical studies of the Raman enhancement mechanism in low-dimensional materials. Prof. Yoon obtained a B.S. degree in Seoul National University, a M. S. degree, and a Ph.D. degree in the University of Illinois. He worked as a researcher at the National Renewable Energy Laboratory in the U.S. after his Ph.D. He is a member of the Korean Physical Society, the Americal Physical Society, and the European Materials Research Society.
- Department Chair, Physics
- Science Building A #A425
- 02-3277-4452
- Office hours
- 화요일 15:30 - 16:50
- Research Interests
- Optical properties of various condensed matter materials through elemetary excitation analyses, Raman scattering studies of low dimensional condensed matter materials, Theoretical studies of Raman enhancement mechanisms, Roles of constituting ions in hybrid organic-inorganic perovskite materials
Research Record
- Synthesis of Highly Crystalline Single-Phase CoNb2O6 Nanofibers at Low Temperature and Their Structural Characterizations Crystal Growth and Design, 2023, v.23 no.6, 4395-4400
- Parallel Alignment of Methylammonium Cations in an Orthorhombic CH3NH3PbCl3Single Crystal Observed by Polarized Micro-Raman Scattering Spectroscopy Chemistry of Materials, 2022, v.34 no.7, 2972-2980
- Correlation between Symmetry and Phase Transition Temperature of VO2 Films Deposited on Al2O3 Substrates with Various Orientations ADVANCED ELECTRONIC MATERIALS, 2021, v.7 no.4, 2000874
- Enhanced optical absorption in conformally grown MoS2layers on SiO2/Si substrates with SiO2nanopillars with a height of 50 nm Nanoscale Advances, 2021, v.3 no.3, 710-715
- Exotic optoelectronic behaviors in CH3NH3PbCl3perovskite single crystals: Co-existence of free and bound excitons with structural phase transitions Applied Physics Letters, 2021, v.118 no.14, 143301
- High speed growth of MAPbBr3single crystals: Via low-temperature inverting solubility: Enhancement of mobility and trap density for photodetector applications Nanoscale, 2021, v.13 no.17, 8275-8282
- Large Surface Photovoltage of WS2/MoS2 and MoS2/WS2 Vertical Hetero-bilayers ACS APPLIED ELECTRONIC MATERIALS, 2021, v.3 no.6, 2601-2606
- A laterally overgrown GaN thin film epitaxially separated from but physically attached to an SiO2-patterned sapphire substrate Crystal Growth and Design, 2020, v.20 no.9, 6198-6204
- Carrier transport and surface potential over phase variations in the surface and bulk of highly efficient Cu2ZnSn(S,Se)4 solar cells Progress in Photovoltaics: Research and Applications, 2020, v.28 no.5, 382-392
- Internal Fields in Multilayer WS2/MoS2 Heterostructures Epitaxially Grown on Sapphire Substrates PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2020, v.217 no.10, 2000033
- Photo-response in 2D metal chalcogenide-ferroelectric oxide heterostructure controlled by spontaneous polarization Journal of Materials Chemistry C, 2020, v.8 no.11, 3724-3729
- Raman Scattering Studies of the Structural Phase Transitions in Single-Crystalline CH3NH3PbCl3 JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2020, v.11 no.10, 3773-3781
- Sodium-assisted passivation of grain boundaries and defects in Cu2ZnSnSe4 thin films PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2020, v.22 no.14, 7597-7605
- Unraveling interface characteristics of Zn(O,S)/Cu(In,Ga)Se-2 at nanoscale: Enhanced hole transport by tuning band offsets APPLIED SURFACE SCIENCE, 2020, v.509, 144782
- Vertically-Oriented WS2 Nanosheets with a Few Layers and Its Raman Enhancements NANOMATERIALS, 2020, v.10 no.9, 1847
- 국내 비만관리 디지털 헬스케어 프로그램의 체계적 고찰 보건사회연구, 2020, v.40 no.1, 560-591
- A simple and robust route toward flexible CIGS photovoltaic devices on polymer substrates: Atomic level microstructural analysis and local opto-electronic investigation SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2019, v.195, 280-290
- Direct observation of quantum tunnelling charge transfers between molecules and semiconductors for SERS Nanoscale, 2019, v.11 no.1, 45-49
- Phase formation and local charge transport of lead-free CH3NH3Sn(I1-xBrx)(3) (0 <= x <= 1) perovskite solar cells fabricated by solvent optimization SOLAR ENERGY, 2019, v.186, 136-144
- Quantum Confinement Induced Excitonic Mechanism in Zinc-Oxide-Nanowalled Microrod Arrays for UV-Vis Surface-Enhanced Raman Scattering Journal of Physical Chemistry C, 2019, v.123 no.40, 24957-24962
- Study of Chemical Enhancement Mechanism in Non-plasmonic Surface Enhanced Raman Spectroscopy (SERS) FRONTIERS IN CHEMISTRY, 2019, v.7, 582
- Abnormal phase flip in the coherent phonon oscillations of Ca2RuO4 PHYSICAL REVIEW B, 2018, v.98 no.16, 161115
- Interference-Enhanced Broadband Absorption of Monolayer MoS2 on Sub-100 nm Thick SiO2/Si Substrates: Reflection and Transmission Phase Changes at Interfaces ADVANCED MATERIALS INTERFACES, 2018, v.5 no.12, 1701637
- Low temperature growth of amorphous VO2 films on flexible polyimide substrates with a TiO2 buffer layer Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films, 2018, v.36 no.3
- MoS2 monolayers on Si and SiO2 nanocone arrays: influences of 3D dielectric material refractive index on 2D MoS2 optical absorption NANOSCALE, 2018, v.10 no.40, 18920-18925
- Single Phase Formation of SnS Competing with SnS2 and Sn2S3 for Photovoltaic Applications: Optoelectronic Characteristics of Thin-Film Surfaces and Interfaces Journal of Physical Chemistry C, 2018, v.122 no.6, 3523-3532
- Strong Nonlinear Optical Response in the Visible Spectral Range with Epsilon-Near-Zero Organic Thin Films ADVANCED OPTICAL MATERIALS, 2018, v.6 no.14, 1701400
- Surface potential mapping and n-type conductivity in organic-inorganic lead iodide crystals CRYSTENGCOMM, 2018, v.20 no.41, 6551-6556
- Band Alignment at Au/MoS2 Contacts: Thickness Dependence of Exfoliated Flakes Journal of Physical Chemistry C, 2017, v.121 no.40, 22517-22522
- Broad-Band Photocurrent Enhancement in MoS2 Layers Directly Grown on Light-Trapping Si Nanocone Arrays ACS Applied Materials and Interfaces, 2017, v.9 no.7, 6314-6319
- Growth of two-dimensional rhenium disulfide (ReS2) nanosheets with a few layers at low temperature CrystEngComm, 2017, v.19 no.36, 5341-5345
- High photo-conversion efficiency in double-graded Cu(In,Ga)(S,Se)2 thin film solar cells with two-step sulfurization post-treatment Progress in Photovoltaics: Research and Applications, 2017, v.25 no.2, 139-148
- Optical and Scanning Probe Identification of Electronic Structure and Phases in CH3NH3PbBr3 Crystal Journal of Physical Chemistry C, 2017, v.121 no.40, 21930-21934
- Strain-induced non-linear optical characteristics of pyroelectric PbVO3 epitaxial thin films OPTICAL MATERIALS EXPRESS, 2017, v.7 no.1, 62-72
- Electrical and optical properties of VO2 thin films grown on various sapphire substrates by using RF sputtering deposition JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2016, v.69 no.12, 1787-1797
- Identification of marcasite in pyrite FeS2 thin films and the films' carrier transport characteristics RSC ADVANCES, 2016, v.6 no.84, 81394-81399
- Microstructural investigation of phases and pinning properties in MBa2Cu3O7-x (M Superconductor Science and Technology, 2016, v.29 no.3
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Enhancement of photo-conversion efficiency in Cu
2 ZnSn(S,Se)4 thin-film solar cells by control of ZnS precursor-layer thickness Progress in Photovoltaics: Research and Applications, 2015, v.24 no.3 - Influence of the ZnS precursor thickness on high efficiency Cu2ZnSn(S,Se)4 thin-film solar cells grown by stacked-sputtering and selenization process 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015, 2015, 14-19 Jun 2015
- Local structural study of commercial grade MBa2Cu3O7-x (M = Y and/or Gd) coated conductors by polarized raman spectroscopy Progress in Superconductivity and Cryogenics (PSAC), 2015, v.17 no.4, 25-29
- Optical and surface probe investigation of secondary phases in Cu2ZnSnS4 films grown by electrochemical deposition SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2015, v.139, 10-18
- Raman scattering studies of Cu2ZnSnS4 thin films: Local distribution of the secondary phase Cu2−xS and the effect of KCN etching on Cu2−xS Journal of the Korean Physical Society, 2015, v.66 no.1, 117-122
- Raman scattering studies of the lattice dynamics in layered MoS2 JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2015, v.66 no.10, 1575-1580
- Spatial Investigation on Structural Properties of GdBa2Cu3O7-x Coated Conductors Grown on IBAD-MgO Based Stainless-Steel Substrates IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2015, v.25 no.3
- Coexistence of piezoelectricity and electric conduction in oxygen-deficient NaNbO3-delta sub-micron cubes MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2014, v.182, 81-85
- Effects of Cu2-xS phase removal on surface potential of Cu2ZnSnS4 thin-films grown by electroplating CURRENT APPLIED PHYSICS, 2014, v.14 no.12, 1665-1668
- Giant enhancement of the Raman response due to one-dimensional ZnO nanostructures Nanoscale, 2014, v.6 no.24, 14622-14626
- Optical properties of amorphous Ge1-xSex and Ge1-x-ySexAsy thin films - optical gap bowing and phonon modes Journal of the Korean Physical Society, 2014, v.64 no.11, 1726-1736
- Probing the Growth Habit of Highly Single Crystalline Twinned V-Shape RuO2 Nanowires by Polarized Raman Scattering JOURNAL OF PHYSICAL CHEMISTRY C, 2014, v.118 no.35, 20716-20720
- Quintuple layer Bi2Se3 thin films directly grown on insulating SiO2 using molecular beam epitaxy APPLIED SURFACE SCIENCE, 2014, v.316, 42-45
- Raman scattering study of IrxRu1-xO2 mixed metal oxide nanowires (0 <= x <= 1) CURRENT APPLIED PHYSICS, 2014, v.14 suppl.1 Special Issue, S44-S48
- Structural properties and phase formation of epitaxial PbVO3 thin films grown on LaAlO3(001) by pulsed laser deposition JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2014, v.47 no.24, Article ID 245302
- Sulfur-doped graphene as a potential alternative metal-free electrocatalyst and Pt-catalyst supporting material for oxygen reduction reaction PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2014, v.16 no.1, 103-109
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[학술지논문] Boosted triboelectric output performance in g-C
3 N4 embedded P(VDF-TrFE) composite via a coupling of photocarrier and ferroelectric dipole NANO ENERGY, 2024, v.122 no.1 , 1093201-10932011 - [학술지논문] Synthesis of Highly Crystalline Single-Phase CoNb2O6 Nanofibers at Low Temperature and Their Structural Characterizations CRYSTAL GROWTH & DESIGN, 2023, v.23 no.6 , 4395-4400
- [학술지논문] Exciton Transfer at Heterointerfaces of MoS2 Monolayers and Fluorescent Molecular Aggregates ADVANCED SCIENCE, 2022, v.9 no.23 , 2201875-2201875
- [학술지논문] Parallel Alignment of Methylammonium Cations in an Orthorhombic CH3NH3PbCl3 Single Crystal Observed by Polarized Micro-Raman Scattering Spectroscopy CHEMISTRY OF MATERIALS, 2022, v.34 no.7 , 2972-2980
- [학술지논문] Correlation between Symmetry and Phase Transition Temperature of VO2 Films Deposited on Al2O3 Substrates with Various Orientations ADVANCED ELECTRONIC MATERIALS, 2021, v.7 no.4 , 20008741-20008748
- [학술지논문] Enhanced optical absorption in conformally grown MoS2 layers on SiO2/Si substrates with SiO2 nanopillars with a height of 50 nm NANOSCALE ADVANCES, 2021, v.3 no.3 , 710-715
- [학술지논문] Exotic optoelectronic behaviors in CH3NH3PbCl3 perovskite single crystals: Co-existence of free and bound excitons with structural phase transitions APPLIED PHYSICS LETTERS, 2021, v.118 no.14 , 143301-143301
- [학술지논문] High speed growth of MAPbBr(3) single crystals via low-temperature inverting solubility: enhancement of mobility and trap density for photodetector applications NANOSCALE, 2021, v.13 no.17 , 8275-8282
- [학술지논문] Large Surface Photovoltage of WS2/MoS2 and MoS2/WS2 Vertical Hetero-bilayers ACS APPLIED ELECTRONIC MATERIALS, 2021, v.3 no.6 , 2601-2606
- [학술지논문] A Laterally Overgrown GaN Thin Film Epitaxially Separated from but Physically Attached to an SiO2-Patterned Sapphire Substrate CRYSTAL GROWTH & DESIGN, 2020, v.20 no.9 , 6198-6204
- [학술지논문] Carrier transport and surface potential over phase variations in the surface and bulk of highly efficient Cu2ZnSn(S,Se)(4) solar cells PROGRESS IN PHOTOVOLTAICS, 2020, v.28 no.5 , 382-392
- [학술지논문] Internal Fields in Multilayer WS2/MoS2 Heterostructures Epitaxially Grown on Sapphire Substrates PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2020, v.217 no.10 , 2000033-2000033
- [학술지논문] Photo-response in 2D metal chalcogenide-ferroelectric oxide heterostructure controlled by spontaneous polarization JOURNAL OF MATERIALS CHEMISTRY C, 2020, v.8 no.11 , 3724-3729
- [학술지논문] Raman Scattering Studies of the Structural Phase Transitions in Single-Crystalline CH3NH3PbCl3 JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2020, v.11 no.10 , 3773-3781
- [학술지논문] Sodium-assisted passivation of grain boundaries and defects in Cu2ZnSnSe4 thin films PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2020, v.22 no.14 , 7597-7605
- [학술지논문] Unraveling interface characteristics of Zn(O,S)/Cu(In,Ga)Se-2 at nanoscale: Enhanced hole transport by tuning band offsets APPLIED SURFACE SCIENCE, 2020, v.509 no.1 , 144782-144782
- [학술지논문] Vertically-Oriented WS2 Nanosheets with a Few Layers and Its Raman Enhancements NANOMATERIALS, 2020, v.10 no.9 , 1847-1-1847-9
- [학술지논문] Digital Health Care Programs for Obesity Management in South Korea: A Systematic Review 보건사회연구, 2020, v.40 no.1 , 560-591
- [학술지논문] A simple and robust route toward flexible CIGS photovoltaic devices on polymer substrates: Atomic level microstructural analysis and local opto-electronic investigation SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2019, v.195 no.0 , 280-290
- [학술지논문] Direct observation of quantum tunnelling charge transfers between molecules and semiconductors for SERS NANOSCALE, 2019, v.11 no.1 , 45-49
- [학술지논문] Study of Chemical Enhancement Mechanism in Non-plasmonic Surface Enhanced Raman Spectroscopy (SERS) FRONTIERS IN CHEMISTRY, 2019, v.7 no.1 , 582-1-582-7
- [학술발표] Chemical enhancement mechanism in surface enhanced Raman spectroscopy RCAS-Ewha Womans University Mini-symposium 2D Materials: Material Growth, Characterization and Devic, 대만, 2020-01-07 RCAS-Ewha Womans University Mini-symposium, 2020
Courses
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2024-1st
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First-Year Seminar 강의 계획서 상세보기
- Subject No 10851Class No 04
- 1Year ( 1Credit Mon 7~7 (D)
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General Physics Ⅰ 강의 계획서 상세보기
- Subject No 20409Class No 01
- 1Year ( 3Credit , 3Hour) Tue 3~3 (POSCO363) , Thu 2~2 (POSCO363)
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Solid State Physics 강의 계획서 상세보기
- Subject No 20507Class No 01
- 4Year ( 3Credit , 3Hour) Tue 5~5 (POSCO365) , Thu 6~6 (POSCO365)
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Current Topics in Physics Ⅰ 강의 계획서 상세보기
- Subject No 35983Class No 01
- 3Year ( 1Credit , 1Hour) Wed 7~7 (SCI-)
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2023-2nd
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Theories of Waves and Optics 강의 계획서 상세보기
- Subject No 20542Class No 01
- 3Year ( 3Credit , 3Hour) Tue 3~3 (POSCO351) , Thu 2~2 (POSCO351)
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General Physics Ⅱ 강의 계획서 상세보기
- Subject No 30002Class No 01
- 1Year ( 3Credit , 3Hour) Tue 6~6 (POSCO452) , Thu 4~4 (POSCO452)
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Current Topics in Physics II 강의 계획서 상세보기
- Subject No 35984Class No 01
- 3Year ( 1Credit , 1Hour) Wed 7~7 (SCI-)
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2023-1st
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First-Year Seminar 강의 계획서 상세보기
- Subject No 10851Class No 07
- 1Year ( 1Credit Mon 7~7 (D)
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General Physics I 강의 계획서 상세보기
- Subject No 20409Class No 01
- 1Year ( 3Credit , 3Hour) Mon 5~5 (POSCO365) , Wed 4~4 (POSCO365)
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Solid State Physics 강의 계획서 상세보기
- Subject No 20507Class No 01
- 4Year ( 3Credit , 3Hour) Mon 2~2 (POSCO366) , Thu 3~3 (POSCO366)
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Physics Laboratory I
- Subject No 20512Class No 01
- 2Year ( 2Credit , 3Hour) Tue 4~5 (SCI-AA416)
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Current Topics in Physics I 강의 계획서 상세보기
- Subject No 35983Class No 01
- 3Year ( 1Credit , 1Hour) Wed 7~7 (SCI-)
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Selected Topics in Applied Physics Ⅲ
- Subject No G15562Class No 01
- Year ( 3Credit , 3Hour) Tue 6~7 (D108)
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2022-2nd
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Theories of Waves and Optics
- Subject No 20542Class No 01
- 3Year ( 3Credit , 3Hour) Mon 5~5 (D) , Wed 4~4 (106)
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General Physics II
- Subject No 30002Class No 01
- 1Year ( 3Credit , 3Hour) Mon 3~3 (POSCO453) , Wed 2~2 (POSCO453)
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2022-1st
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General Physics I
- Subject No 20409Class No 06
- 1Year ( 3Credit , 3Hour) Mon 5~5 , Wed 4~4
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Solid State Physics
- Subject No 20507Class No 01
- 4Year ( 3Credit , 3Hour) Tue 5~5 (D) , Thu 6~6 (106)
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Physics Laboratory III
- Subject No 20514Class No 01
- 3Year ( 2Credit , 3Hour) Mon 2~3 (D)
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2021-2nd
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Spectroscopy
- Subject No 20509Class No 01
- 4Year ( 3Credit , 3Hour) Tue 3~3 (POSCO362) , Thu 2~2 (POSCO362)
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Theories of Waves and Optics
- Subject No 20542Class No 01
- 3Year ( 3Credit , 3Hour) Tue 5~5 (POSCO365) , Thu 6~6 (POSCO365)
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Academic Background
University of Illinois at Urbana-Champaign Ph.D.(물리학)
University of Illinois at Urbana-Champaign M.S.(물리학)
Seoul Nat'l Univ. 이학사(물리학)