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Chang-Yong Nam

Staff Scientist | Electronic Nanomaterials

Expertise

  • Atomic layer deposition & infiltration synthesis
  • Application of self-assembled block copolymers
  • Organic & hybrid electronic devices and photovoltaics
  • Materials & device physics in low dimensional materials (nanowires & two-dimensional materials)

CFN Research Activities

Dr. Nam’s research program is focused on the two primary objectives: (a) Development and application of atomic layer deposition techniques, such as infiltration synthesis, towards the materials innovation in nanopatterning, hybrid nanocomposite, nanoelectronic sensors, and catalysis technologies critical for addressing energy and environmental issues; (b) Device physics and materials processing in organic semiconductors, semiconductor nanowires, and two-dimensional materials.

Education

  • Ph.D.: University of Pennsylvania, 2007
    • Materials Science and Engineering
    • Dissertation Title: Gallium Nitride Nanowires: Synthesis, Resonant Electromechanical Properties, Ion Beam Disorder Effect on Contact Conduction, and Heterojunction Fabrication
  • M.S.: Korea Advanced Institue of Science and Technology (KAIST), 2001
    • Materials Science and Engineering
  • B.E.: Korea University, 1999
    • Major: Metallurgical Engineering
    • 1995 – 1997 Leave of Absence for Military Service in Republic of Korea Army

Professional Appointments

  • Scientist, Center for Functional Nanomaterials, Brookhaven National Laboratory, 2016 – Present
  • Associate Scientist, Center for Functional Nanomaterials, Brookhaven National Laboratory, 2013 – 2016
  • Assistant Scientist, Center for Functional Nanomaterials, Brookhaven National Laboratory, 2010 – 2013
  • Adjunct Professor, Department of Materials Science and Chemical Engineering, Stony Brook University, 2014 – Present
  • Adjunct Professor, Department of Electrical and Computer Engineering, New Jersey Institute of Technology, 2019 – Present
  • Goldhaber Distinguished Fellow, Center for Functional Nanomaterials, Brookhaven National Laboratory , 2007 – 2010
  • Commissioned Researcher, Korea Institute of Science and Technology (KIST), 2001 – 2002

Selected Publications & Research Highlights

*: Corresponding Author

A. Subramanian, N. Tiwale, C.-Y. Nam*, “Review of Recent Advances in Applications of Vapor-Phase Material Infiltration Based on Atomic Layer Deposition”, JOM 71, 185 (2019)

L. Wang, Y. Zhou, Y. Yang, A. Subramanian, K. Kisslinger, X. Zhuo, Y.-C. Chuang, Y. Yin, C.-Y. Nam*, M. Rafailovich*, “Suppression of carbon monoxide poisoning in proton exchange membrane fuel cells via gold nanoparticle/titania ultrathin film heterogeneous catalysts”, ACS Applied Energy Materials, in press, (2019)

W. Tang, X. Lu, S. Du, S. Hoang, S. Wang, C.-Y. Nam*, P.-X. Gao* “Ceria-based Nanoflake Arrays Integrated on 3D Cordierite Honeycombs for Efficient Low-Temperature Diesel Oxidation”, Applied Catalysis B 245, 623 (2019)

L. Wang, D. Yan, D.W. Shaffer, X. Ye, B.H. Layne, J.J. Concepcion, M. Liu, C.-Y. Nam*, “Improved Stability and Performance of Visible Photoelectrochemical Water Splitting on Solution-Processed Organic Semiconductor Thin Films by Ultrathin Metal Oxide Passivation”, Chemistry of Materials 30, 324 (2018)

E.S. Muckley, L. Collins, A.V. Ievlev, X. Ye, K. Kisslinger, B.G. Sumpter, N.V. Larvik, C.-Y. Nam*, I.N. Ivanovic*, “Light-Activated Hybrid Nanocomposite Film for Water and Oxygen Sensing”, ACS Applied Materials & Interfaces 10, 31745 (2018)

Z. Yang, Y. Guo, H. Li, Y. Zhou, X. Zuo, Y. Yu, C. Pan, J. Strzalka, C.-Y. Nam*, M. Rafailovich*, “Roles of Interfacial Tension in Regulating Internal Organization of Low Bandgap Polymer Bulk Heterojunction Solar Cells by Polymer Additives”, Advanced Materials Interfaces 5, 1800435 (2018)

M. Li, P. Zhal, C.-Y. Nam*, M. Cotlet*, “Distinct Optoelectronic Signatures for Charge Transfer and Energy Transfer in Quantum Dot-MoS2 Hybrid Photodetectors Revealed by Photocurrent Imaging Microscopy”, Advanced Functional Materials 28, 1707558 (2018)

K. Dusoe*, X. Ye, K. Kisslinger, A. Stein, S.-W. Lee, C.-Y. Nam*, “Ultra-High Elastic Strain Energy Storage in Metal-Oxide-Infiltrated Patterned Hybrid Polymer Nanocomposites”, Nano Letters 17, 7416 (2017)

C.-Y. Nam*, A. Stein, “Extreme Carrier Depletion and Super-Linear Photoconductivity in Ultrathin Parallel-Aligned ZnO Nanowire Array Photodetectors Fabricated by Infiltration Synthesis”, Advanced Optical Materials 5, 1700807 (2017)

H. Li, Z. Yang, N. Jiang, S. Satija, D. Xu, D. Gersappe, C.-Y. Nam*, M. Rafailovich*, “A new strategy to engineer polymer bulk heterojunction solar cells with thick active layers via self-assembly of tertiary columnar phase”, Nanoscale 9, 11511 (2017)

X. Ye, J. Kestell, K. Kisslinger, M. Liu, R.B. Grubbs, J.A. Boscoboinik, C.-Y. Nam*, “Effects of residual solvent molecules facilitating the ZnO infiltration synthesis in a non-reactive polymer”, Chemistry of Materials 29, 4535 (2017)

V.R. Manfrinato, A. Stein, L. Zhang, C.-Y. Nam, K.G. Yager, E.A. Stach*, C.T. Black*, “Aberration-Corrected Electron Beam Lithography at the One Nanometer Length scale”, Nano Letters 17, 4562 (2017)

N. Jiang, L. Sendogdular, M. Sen, M.K. Endoh, T. Koga*, M. Fukuto, B. Akgun, S.K. Satija, C.-Y. Nam*, “Novel effects of compressed CO2 molecules on structural ordering and charge transport in conjugated poly(3-hexylthiophene) thin films”, Langmuir 32, 10851 (2016)

T. Goh, J.-S. Huang, K. Yager, M.Y. Sfeir, C.-Y. Nam, X. Tong, L.M. Guard, P.R. Melvin, F. Antonio, B. Bartolome, M. Lee, N. Hazar*, A.D. Taylor*, “Quaternary Organic Solar Cells Enhanced by Cocrystalline Squaraines with Power Conversion Efficiencies >10%”, Advanced Energy Materials 6, 1600660 (2016)

Y. Huang, H. Zang, J.-S. Chen, E.A. Sutter, P.W. Sutter*, C.-Y. Nam*, M. Cotlet*, “Hybrid quantum dot-tin disulfide field-effect transistors with improved photocurrent and spectral responsivity”, Applied Physics Letters 108, 123502 (2016)

S. Hoang, A. Ashraf, M.D. Eisaman, D. Nykypanchuk*, C.-Y. Nam*, “Enhanced Photovoltaic Performance of Ultrathin Si Solar Cells via Semiconductor Nanocrystal Sensitization: Energy Transfer vs. Optical Coupling Effects”, Nanoscale 8, 5873 (2016)

C.-Y. Nam*, A. Stein, K. Kisslinger, C.T. Black, “Electrical and structural properties of ZnO synthesized via infiltration of lithographically defined polymer templates”, Applied Physics Letters 107, 103206 (2015)

C.-Y. Nam*, A. Stein, K. Kisslinger, “Direct fabrication of high aspect-ratio metal oxide nanopatterns via sequential infiltration synthesis in lithographically-defined SU-8 templates”, Journal of Vacuum Science and Technology B 33, 06F201 (2015)

Y. Zhong, M.T. Trinh, R. Chen, G. Purdum, P. Khlyabich, M. Sezen, S. Oh, H. Zhu, B. Fowler, B. Zhang, W. Wang, C.-Y. Nam, M. Sfeir, C.T. Black, M. Steigerwald, Y.-L. Loo, F. Ng*, X. Zhu*, C. Nuckolls*, “Molecular Helices as Electron Acceptors in High-Performance Bulk Heterojunction Solar Cells”, Nature Communications 6, 8242 (2015)

H. Hlaing*, C.-H. Kim, F. Carta, C.-Y. Nam, R. Barton, N. Petrone, J. Hone, I. Kymissis*, “Low-Voltage Organic Electronics Based on a Gate?Tunable Injection Barrier in Vertical Graphene–Organic Semiconductor Heterostructures”, Nano Letters 15, 69 (2015)

C.-Y. Nam*, “Ambient air processing causes light soaking effects in inverted organic solar cells having conjugated polyelectrolyte electron transfer layer”, Journal of Physical Chemistry C 118, 27219 (2014)

Y. Zhong, M.T. Trinh, R. Chen, W. Wang, B. Kumar, C.-Y. Nam, M.Y. Sfeir, C.T. Black, M.L. Steigerwald, S.X. Xiao*, F. Ng*, X.Y. Zhu*, C. Nuckolls*, “Efficient organic solar cells with helical perylene diimide electron acceptors”, Journal of the American Chemical Society 136, 15215 (2014)

M.Z. Liu*, J. Tao, C.-Y. Nam, K. Kisslinger, L. Zhang, D. Su,"Surface-energy induced formation of single crystalline bismuth nanowires over vanadium thin film at room temperature", Nano Letters 14, 5630 (2014)

Y.S. Park, Q. Wu, C.-Y. Nam, R.B. Grubbs*, "Polymerization of Tellurophene Derivatives via Microwave-Assisted Palladium-Catalyzed Ipso-arylative Polymerization", Angewandte Chemie International Edition 53, 10691 (2014)

J. Kamcev, D.S. Germack, D. Nykypanchuk, R.B. Grubbs, C.-Y. Nam*, C.T. Black*, "Chemically Enhancing Block Copolymers for Block-Selective Synthesis of Self-Assembled Metal Oxide Nanostructures", ACS Nano 7, 339 (2013)

C.-Y. Nam*, "Facile Determination of Bulk Charge Carrier Concentration in Organic Semiconductors: Out-of-Plane Orientation Hopping Conduction Characteristics in Semi-crystalline Polythiophene",  Journal of Physical Chemistry C 116, 23951 (2012)

C.-Y. Nam*, Y. Qin, Y.S. Park, H. Hlaing, X. Lu, B.M. Ocko, C.T. Black, R.B. Grubbs*, "Photocrosslinkable Azide-Functionalized Polythiophene for Thermally Stable Bulk Heterojunction Solar Cells", Macromolecules 45, 2338 (2012)

C.-Y. Nam*, Q. Wu, D. Su, C.-Y. Chiu, N.J. Tremblay, C. Nuckolls, C.T. Black, "Nanostructured Electrodes for Organic Bulk Heterojunction Solar Cells: Model Study Using Carbon Nanotube Dispersed Polythiophene-Fullerene Blend Devices", Journal of Applied Physics 110, 064307 (2011)

A. Varotto, C.-Y. Nam, I. Radivojevic, J.P.C. Tome, J.A.S. Cavaleiro, C.T. Black*, C.M. Drain*, "PhthalocyanineBlends Improve Bulk Heterojunction Solar Cells",  Journal of American Chemical Society 132, 2552 (2010)

C.-Y. Nam*, D. Su, C.T. Black, "High-Performance All Air-Processed Polymer-Fullerene Bulk Heterojunction Solar Cells", Advanced Functional  Materials 19, 3552 (2009)

D. Tham, C.-Y. Nam, J.E. Fischer*, "Defects in Gallium Nitride Nanowires", Advanced Functional Materials 16, 1197 (2006)

D. Tham, C.-Y. Nam, J.E. Fischer*, "Microstructure and Composition of Focused-ion-beam Deposited Pt Contacts to GaN Nanowires", Advanced Materials 18, 290 (2006)

C.-Y. Nam, P. Jaroenapibal, D. Tham, D.E. Luzzi, S. Evoy*, J.E. Fischer*, "Diameter-Dependent Electromechanical Properties of GaN Nanowire", Nano Letters 6, 153 (2006)

C.-Y. Nam, D. Tham, J.E. Fischer*, "Disorder Effects in Focused Ion Beam Deposited Pt Contacts to GaN Nanowires", Nano Letters 5, 2029 (2005)