Monday, October 6, 2008

Research Interests

Research Areas:
- Compound Semiconductors/Optoelectronic Materials·Devices/Metal-Organic Chemical Vapor Deposition (MOCVD)
- 0D/1D/2D van der Waals (single/few-atomic-layer) Metals·Semiconductors·Insulators/Devices
- Phase Change Memory Materials, (Flexible) Electrode Materials

Research Keywords: Semiconductor, Epitaxy, Nanocoating, Thin Film Technology & Surface/Interface Science

"Semiconductor Epitaxy, van der Waals Epitaxy, Functional Nanocoating, Phase Change Memory Materials, 0D/1D/2D Functional Nanomaterials" for Potential Applications in Flexible Optoelectronics, Photovoltaics, and Environmental & Energy Devices

· Novel Synthesis and Applications of One-, Two-Dimensional van der Waals Atomic Crystals beyond Graphene, and Hybrid Systems with MOVPE-grown III-V & II-VI Compound Semiconductors for Flexible Optoelectronics, Photovoltaics, and Environmental & Energy Devices

· Low Temperature Engineering with Graphene and Related Low-Dimensional Nanomaterials for Multi-Functional Coatings and Interfaces in a Number of Graphene-Enhanced Products (e.g., Coating for hetero-epitaxy, for oxidation/corrosion/diffusion/gas barriers, for bio-scaffolds, for membranes etc.)

· Advanced III-V & II-VI Epitaxy (with reduced dimensionalities) on Si via Metal-Organic Chemical Vapor Deposition (MOCVD) for Advanced Optoelectronics/Photovoltaics and Flexible RBG & White Light Emitters


Educations

Seoul National University, Seoul, Korea (2005.8.)
Ph.D. degree in Materials Science and Engineering

· Thesis supervised by Professor Euijoon Yoon in the field of III-Nitride compound semiconductors
· Dissertation: Growth of In-rich InGaN/GaN quantum well structures using growth interruption and their structural and optical properties

Seoul National University, Seoul, Korea (2001.2.)
M.S. degree in Materials Science and Engineering
· Thesis supervised by Professor Euijoon Yoon in the field of III-Nitride compound semiconductors
· Dissertation: Analysis of structural and interfacial properties of AlGaN/GaN multi-quantum well (MQW)

Seoul National University, Seoul, Korea (1999.2.)
B.S. degree in Materials Science and Engineering

Work Experiences

Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea (2008.11.-present)
Full/Associate/Assistant Professor, Department of Materials Science and Engineering

Dean, Office of University-Industry Relations (2020.02.-present) 

University of Washington, Seattle, Washington 98105, USA (2015.7.-2016.7.)
Visiting Professor, Department of Physics


University of California at Los Angeles (UCLA), Los Angeles, California 90095, USA (2007.6.-2008.9.)
Postdoctoral Scholar, Department of Materials Science and Engineering

· Projects: Heteroepitaxial Graphene on Pd (111) and 6H-SiC (0001) by in-situ VT-STM and UHV-CVD
                Growth Studies of Sputter-Deposited GexSb1-x Thin Films for Memory Applications
· Work in Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign (UIUC)

Yale University, New Haven, Connecticut 06511, USA (2005.12.-2007.5.)
Postdoctoral Associate, Department of Electrical Engineering

· Project: AlGaInN Optoelectronics for White Lightening by MOCVD

Publications & Patents

1 Book Chapter on International Book on Optoelectronic Semiconductor Devices
Hyun Jin Kim, Soon-Yong Kwon, and Euijoon Yoon, “Chapter 6. Growth of nitride quantum dots”, Optoelectronic Devices: III-V Nitrides, edited by M. Henini and M. Razeghi, Elsevier (2004.12.).

More Than 100 International Refereed Journals on Applied Physics, Materials Science, and Semiconductors (selected) ( __: FINDers, ‡: equally contributed, *: corresponding author)
· J.-H. Han‡, S.-H. Seok‡, Y.H. JinJ. Park, Y. Lee, H.U. Yeo, J.-H. Back, Y. SimY. Chae, J. Wang, G.-Y. Oh, W. Lee, S.H. Park, I.-C. Bang, J.H. Kim, S.-Y. Kwon*, "Robust 2D layered MXene matrix - boron carbide hybrid films for neutron radiation shielding", Nature Communications 14, 6957 (2023).
- Highlighted in Media and Newspapers
- Included in Collection of 'Materials and devices for separation, sensing and protection' in Nature Communications
· Y. Jung‡, S.-H. Seok‡, K.-W. Jung, J. ParkS.-Y. Kwon*, J.-W. Choi*, "Nitrogen-doped titanium carbide (Ti3C2Tx) MXene nanosheet stack for long-term stability and efficacy in Au and Ag recovery", Small 19, 2305247 (2023).
- Featured as Journal Cover Article (Vol.19, Issue: 48)
· J. Yang, A. Yoon, D. Lee, S. Song, I. J. Jung, D.-H. Lim, H. Jeong, Z. Lee, M. Lanza, S.-Y. Kwon*, "Wafer-scale memristor array based on aligned grain boundaries of 2D molybdenum ditelluride for application to artificial synapses", Advanced Functional Materials online published, 2309455 (2023).
· S.-H. Seok‡, Y. Sim‡, J.-H. Han, Y.H. JinY. ChaeJ. ParkS.-Y. Kwon*, "Synthesis and processing of two-dimensional nitride MXenes for electrocatalysis and energy storage", Cell Reports Physical Science (Review) 4, 101582 (2023).
- Included in Collection of 'Cell Reports Physical Science Reviews and Perspectives'
· S. Song‡, A. Yoon‡, S. Jang‡, J. Lynch, J. Yang, J. Han, M. Choe, Y.H. Jin, Y. Chen, Y. Cheon, J. Kwak, C. Jeong, H. Cheong, D. Jariwala, Z. Lee*, S.-Y. Kwon*, "Fabrication of p-type 2D single-crystalline transistor arrays with Fermi-level-tuned van der Waals semimetal electrodes", Nature Communications 14, 4747 (2023).
- Highlighted in Media and Newspapers
· Y. Sim*, Y. ChaeS.-Y. Kwon*, "Recent advances in metallic transition metal dichalcogenides as electrocatalysts for hydrogen evolution reaction", iScience (Invited Review) 25, 105098 (2022).
· S. Song, A. Yoon, J.-K. Ha, J. Yang, S. Jang, C. Leblanc, J. WangY. Sim, D. Jariwala, S.-K. Min, Z. Lee*, S.-Y. Kwon*, "Atomic transistors based on seamless lateral metal-semiconductor junctions with a sub-1-nm transfer length", Nature Communications 13, 4916 (2022).
- Highlighted in Media and Newspapers
- Included in Collection of 'Top 25 Physics Articles of 2022' in Nature Communications
- Included in Collection of '2D materials research towards industrialisation' in Nature Communications
· S.-Y. Kwon*, "Integrating 2D materials and metal electrodes", Nature Electronics 5, 259-260 (2022).
- Invited News & Views in Nature Electronics
· Y. Sim‡, A. Yoon‡, H.S. Kang, J. Kwak, S.-Y. Kim, Y. Jo, D. Choe, W. Na, M.H. Lee, S.-D. Park, S. Song, D. Kim, J.-W. Yoo, S.Y. Kim, H. Cheong, J.S. Lee, C.-H. Lee*, Z. Lee*, S.-Y. Kwon*, "Design of two-dimensional layered catalyst by coherent heteroepitaxial conversion for robust hydrogen generation", Advanced Functional Materials 31, 2005449 (2021).
- Featured as Hot Topic in Wiley-VCH: Water Splitting
· S.-H. Seok, S. Choo, J. Kwak, H. Ju, J.-H. Han, W.-S. Kang, J. Lee, S.-Y. KimD.H. Lee, J. Lee, J. WangS. Song, W. Jo, B.M. Jung, H.G. Chae*, J.S. Son*, S.-Y. Kwon*, "Synthesis of high quality 2D carbide MXene flakes using a highly purified MAX precursor for ink applications", Nanoscale Advances 3, 517-527 (2021).
- Included in Nanoscale Advances Popular Advances Collection 2021 
· S. SongY. Sim, S.-Y. Kim, J. H. Kim, I. Oh, W. Na, D.H. LeeJ. Wang, S. Yan, Y. Liu, J. Kwak, J.-H. Chen, H. Cheong, J.-W. Yoo, Z. Lee, S.-Y. Kwon*, "Wafer-scale production of patterned transition metal ditelluride layers for two-dimensional metal-semiconductor contacts at the Schottky-Mott limit", Nature Electronics 3, 207-215 (2020).
- Featured in Nature Electronics 3, 187-188 (2020) (News & Views). 
- Highlighted in Media and Newspapers
· D.H. Lee‡, Y. Sim‡, J. Wang, S.-Y. Kwon*, "Metal-organic chemical vapor deposition of 2D van der Waals materials - The challenges and the extensive future opportunities", APL Materials (Invited Perspective) 8, 030901 (2020).
- Included in Special Collection of 'Moire Materials' 
· D.H. Lee, H.D. Yun, E.D. Jung, J.H. Chu, Y.S. Nam, S. SongS.-H. Seok, M.H. Song, S.-Y. Kwon*, "Ultrathin graphene intercalation in PEDOT:PSS/colorless polyimide-based  transparent electrodes for enhancement of optoelectronic performance and operational stability of organic devices", ACS Applied Materials & Interfaces 11, 21069-21077 (2019).
· S.-Y. Kim‡, J. Kwak‡, C. V. Ciobanu, S.-Y. Kwon*, "Recent developments in controlled vapor-phase growth of 2D group 6 transition metal dichalcogenides", Advanced Materials (Invited Review) 31, 1804939 (2019).
· J.H. Kim, S.-Y. Kim, Y. Cho, H.J. Park, H.-J. Shin, S.-Y. Kwon, Z. Lee*, "Interface-driven partial dislocation formation in 2D heterostructures", Advanced Materials 31, 1807486 (2019).
· S. SongS.-Y. KimJ. KwakY. Jo, J.H. Kim, J.H. Lee, J.-U. Lee, J.U. Kim, H.D. YunY, SimD.H. LeeS.-H. Seok, T.-I. Kim, H. Cheong, Z. Lee,  S.-Y. Kwon*, "Electrically robust single-crystalline WTe2 nanobelts for nanoscale electrical interconnects", Advanced Science 6, 1801370 (2019).
- Featured as Journal Frontpiece Article (Vol.6, Issue:3)
· S.-Y. Kim, J.H. Kim, S. Lee, J. KwakY. Jo, E. Yoon, G.-D. Lee, Z. Lee, S.-Y. Kwon*, "The impact of substrate surface defects on the properties of two-dimensional van der Waals heterostructures", Nanoscale 10, 19212-19219 (2018).
- Featured as Editor's Choice: van der Waals heterostructures
· J. Kwak*, S.-Y. KimY. Jo, N.Y. Kim, S.Y. Kim, Z. Lee, S.-Y. Kwon*, "Unraveling the water impermeability discrepancy in CVD-grown graphene", Advanced Materials 30,1800022 (2018).
- Featured as Journal Inside Front Cover Article (Vol.30, Issue:30)
- Highlighted in Media and Newspapers
· J. KwakY. JoS. Song, J.H. Kim, S.-Y. Kim, J.-U. Lee, S. Lee, J. Park, K. Kim, G.-D. Lee, J.-W. Yoo, S.Y. Kim, Y.-M. Kong, G.-H. Lee, W.-G. Lee, J. Park, X. Xu, H. Cheong, E. Yoon, Z. Lee*,  S.-Y. Kwon*, "Single-crystalline nanobelts composed of transition metal ditellurides", Advanced Materials 30,1707260 (2018).
- Highlighted in Media and Newspapers
· Y. Sim, J. Kwak*, S.-Y. Kim, Y. Jo, S. Kim, S.Y. Kim, J.-H. Kim, C.-S. Lee, J.H. Jo, S.-Y. Kwon*, "Formation of 3D graphene-Ni foam heterostructures with enhanced performance and durability for bipolar plates in a polymer electrolyte membrane fuel cell", Journal of Materials Chemistry A 6, 1504-1512 (2018).
· J. Kwak‡, Y. Jo‡, S.-D. Park‡, N.Y. Kim, S.-Y. Kim, H.-J. Shin, Z. Lee, S.Y. Kim*, S.-Y. Kwon*, "Oxidation behavior of graphene-coated copper at intrinsic graphene defects of different origins", Nature Communications  8, 1549 (2017).
- Highlighted in Media and Newspapers
· H.H. Yoon, S. Jung, G. CHoi, J. Kim, Y. Jeon, Y.S. Kim, H.Y. Jeong, K. Kim, S.-Y. Kwon, K. Park*, "Strong Fermi-level pinning at metal/n-Si(100) interface ensured by forming an intact Schottky contact with a graphene insertion layer", Nano Letters 17, 44 (2017).
- Highlighted in Media and Newspapers
· S.-Y. Kim‡,  J. Kwak‡,  J.H. Kim, J.-U. Lee, Y. Jo, S.Y. Kim, H. Cheong, Z. Lee, S.-Y. Kwon*, "Substantial improvements of long-term stability in encapsulation-free WS2 using highly interacting graphene substrate", 2D Materials  4, 011007 (2017).
· J.H. ChuD.H. Lee, J. Jo, S.Y. Kim, J.-W. Yoo*, S.-Y. Kwon*, "Highly conductive and environmentally stable organic transparent electrodes laminated with graphene", Advanced Functional Materials  26, 7234-7243 (2016).
- Featured as Journal Inside Back Cover Article (Vol.26, Issue:40)
· H. Seo, H.D. YunS.-Y. Kwon, I.C. Bang*, "Hybrid graphene and single-walled carbon nanotube films for enhanced phase-change heat transfer", Nano Letters 16, 932-938 (2016).
· J.-K. Choi, J. Kwak, S.-D. Park, H.D. Yun, S.-Y. Kim, M. Jung, S.Y. Kim, K. Park, S. Kang, S.-D. Kim, D.-Y. Park, D.-S. Lee, S.-K. Hong, H.-J. Shin*, S.-Y. Kwon*, "Growth of wrinkle-free graphene on texture-controlled platinum films and thermal-assisted transfer of large-scale patterned graphene", ACS Nano 9, 679-686 (2015).
- Highlighted in Media and Newspapers
· J.-H. Huh, S.H. Kim, J.H. Chu, S.Y. Kim, J.H. Kim*, S.-Y. Kwon*, "Enhancement of seawater corrosion resistance in copper using acetone-derived graphene coating", Nanoscale 6, 4379-4386 (2014).
· J.H. Chu J. Kwak, S.-D. Kim, M.J. Lee, J.J. Kim, S.-D. Park, J.-K. Choi, G.H. Ryu, K. Park, S.Y. Kim, J.H. Kim, Z. Lee, Y.-W. Kim, S.-Y. Kwon*, "Monolithic graphene oxide sheets with controllable composition", Nature Communications 5, 3383 (2014).
- Highlighted in Media and Newspapers
· D.T. Ho, S.-D. Park, S.-Y. Kwon, K. Park, S.Y. Kim*, "Negative Poisson's ratios in metal nanoplates", Nature Communications 5, 3255 (2014).
- Highlighted in Media and Newspapers
· J.-K. Choi, J.-H. Huh, S.-D. Kim, D. Moon, D. Yoon, K.S. Joo, J. Kwak, J.-H. Chu, S.Y. Kim, K. Park, Y.-W. Kim, E. Yoon, H. Cheong, S.-Y. Kwon*, "One-step graphene coating of heteroepitaxial GaN films", Nanotechnology 23, 435603 (2012).
 - Featured in Semiconductor Today 7(9), 74-75 (2012) etc.
· J.H. Chu, J. Kwak, T.-Y. Kwon, S.-D. Park, H. Go, S.Y. Kim, K. Park, S. Kang, S.-Y. Kwon*, "Facile synthesis of few-layer graphene with a controllable thickness using rapid thermal annealing", ACS Applied Materials & Interfaces 4, 1777-1782 (2012).
· J. Kwak, J.H. Chu, J.-K. Choi, S.-D. Park, H. Go, S.Y. Kim, K. Park, S.-D. Kim, Y.-W. Kim, E. Yoon, S. Kodambaka, S.-Y. Kwon*, "Near room-temperature synthesis of transfer-free graphene films", Nature Communications 3, 645 (2012).
  - Featured in Nature 483, S32-S33 (2012), Materials Research Society (MRS) News etc.
  - Press releases in Nature Communications (24 Jan 2012).
  - Highlighted in Media and Newspapers
· S.-Y. Kwon, C. V. Ciobanu*, V. Petrova, V. B. Shenoy, J. Bareno, V. Gambin, I. Petrov, S. Kodambaka*, "Growth of semiconducting graphene on palladium", Nano Letters 9, 3985-3990 (2009).
· S.-Y. Kwon, H. J. Kim, E. Yoon*, Y. Jang, K.-J. Yee, D. Lee, S.-H. Park, D.-Y. Park, H. Cheong, F. Rol, L. S. Dang, "Optical and microstructural studies of atomically flat ultrathin In-rich InGaN/GaN multiple quantum wells", Journal of Applied Physics 103, 063509 (2008).
· Z. Ren, Q. Sun, S.-Y. Kwon, J. Han*, K. Davitt, Y. K. Song, A. V. Nurmikko, H.-K. Cho, W. Liu, J. A. Smart, L. J. Schowalter, "Hetroepitaxy of AlGaN on bulk AlN substrates for deep ultraviolet light emitting diodes", Applied Physics Letters 91, 051116 (2007).
· S.-Y. Kwon, H. J. Kim, H. Na, Y.-W. Kim, H.-C. Seo, H. J. Kim, Y. Shin E. Yoon*, Y.-S. Park, "In-rich InGaN/GaN multiple quantum wells grown by metal-organic chemical vapor deposition", Journal of Applied Physics 99, 044906 (2006).
· S.-Y. Kwon, S.-I. Baik, Y.-W. Kim, H. J. Kim, D.-S. Ko, E. Yoon*, J.-W. Yoon, H. Cheong, Y.-S. Park, "Room temperature near-ultraviolet emission from In-rich InGaN/GaN multiple quantum wells", Applied Physics Letters 86, 192105 (2005).

More than 40 Patents (selected) (*: corresponding inventor)
· S.-Y. Kwon*, S.Y. Kim, K. Park. J. Kwak, J.H. Chu, J.-K. Choi, "Wrinkle-free graphene sheet, transparent electrode, active layer including the same, display, electronic device, optoelectronic device, battery, solar cell and dye-sensitized solar cell including the electrode or active layer", US registration number: 9385281 (2016.07.05), KR registration number: 10-1279990 (2013.06.24.), CN application number: 201180073584.X (2014.03.20.), EU application number: 11870060.8 (2014.02.13.), PCT application number: PCT/KR2011/005438 (2011.07.22.)
· S.-Y. Kwon*, K. Park, E. Yoon, J. Kwak, "Method for manufacturing graphene, transparent electrode and active layer comprising the same, and display, electronic device, optoelectronic device, battery, solar cell and dye-sensitized solar cell including the electrode and the active layer",  CN registration number: ZL201180013140.7 (2015.09.16.), KR registration number: 10-1251020 (2013.03.26.), US application number: 13/604,100 (2012.09.05),  EU application number: 11753537.7 (2012.10.08.), PCT application number: PCT/KR2011/001092 (2011.02.18.)

Courses Taught at UNIST (in English)
· Introduction to Materials Science and Engineering (2009 Spring, 2009 Fall, 2010 Spring (two sections), 2011 Spring, 2012 Fall, 2013 Fall, 2014 Spring, 2018 Spring, 2019 Spring, MSE202 for undergraduates)
· Thin Film Technology (2011 Fall, 2012 Winter, 2013 Winter, 2014 Fall, 2015 Spring, 2016 Fall, 2017 Spring, 2018 Spring, 2019 Fall, 2020 Spring, 2021 Spring, MSE351 for undergraduates)
· The Materials Science of Low-Dimensional Nanomaterials (2017 Fall, 2018 Fall, AMS49701 for undergraduates)
· Materials Laboratory (2013 Spring, 2014 Spring, 2015 Spring, 2020 Fall for undergraduates)
· Advanced Thin Film Technology (2009 Fall, 2010 Fall, AME501 for graduates)
· Light Emitting Diodes (2011 Spring, 2012 Fall, 2013 Fall, 2014 Fall, 2016 Fall, 2017 Fall, 2019 Spring AME531 for graduates)
· Best Teaching Award, UNIST 2009
· Excellence in Teaching Award, UNIST MAME 2009

Community Services
· Dean, Office of University-Industry Relations, UNIST & CEO, UNIST Holdings (2020.2.-present)
· Director, Ulsan-Ulju Innotown Center, Ministry of Science & ICT (2021.1.-203.7.)
· Associate Editor (2020.7.-2022.7.), Editorial Advisory Board (2022.7.-present), iScience (Cell Press, Elsevier). 
· Track Coordinator, Advanced Materials Science (AMS) Track in School of Materials Science and Engineering, UNIST (2018.3.-2020.1.)
· Track Coordinator, Materials Science and Engineering (MSE) Track in School of Mechanical and Advanced Materials Engineering (MAME), UNIST (2011.3.-2014.3.)
· Technical Program Committee & Session Organizer (V. 2D van der Waals Materials: Graphene and beyond Graphene), The 1st & 2nd Global Conference on Innovation Materials (GCIM 2023 & 2024)
· Symposium Organizer (V. Two-Dimensional van der Waals Materials: Graphene and Beyond Graphene), The 22nd International Union of Materials Research Societies-International Conference in Asia (IUMRS-ICA 2021)
· Committee Member, The 6th International Conference on Electronic Materials and Nanotechnology for Green Environment (ENGE 2020)
· Vice-Chair, Technical Program Committee & Session Organizer (2D Materials), The 5th International Conference on Advanced Electromaterials (ICAE 2019)
· Sub-committee Chair (C. Materials Growth & Characterizations), The 26-28th Korean Conference on Semiconductors (KCS 2019-2021)
· Sub-committee Member (C. Materials Growth & Characterizations), The 19-30th Korean Conference on Semiconductors (KCS 2012-present)
· Session Organizer (2D Materials), The 1st, 2nd Korean Conference on LEDs and Optoelectronics (2018)
· Session Co-organizer (Optical Metamaterials & Novel Optical Materials(14th), Multifunctional Composites & Metamaterials(15th)), The 14-15th International Union of Materials Research Societies-International Conference on Advanced Materials (IUMRS-ICAM 2015-2016)
· Co-organizer, International Conference for Top and Emerging Materials Scientists (IC-TEMS 2014)
· Committee Member, The 16th International Conference on Metal-Organic Vapor Phase Epitaxy (ICMOVPE 2012)
· Session Co-organizer (Graphene and Carbon Nanomaterials), The 18th American Conference on Crystal Growth and Epitaxy (ACCGE 2011)
· Former Board Member of the Korean Ceramic Society
· Former Board Member of Korea Society of Optoelectronics
· Fellow of Korean Vacuum Society,
· Member of American Vacuum Society, Materials Research Society
· Member of Korean Institute of Metals and Materials, Korean Physical Society