General Information

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Chang-Yong Nam

Staff Scientist | Materials Synthesis and Characterization

Expertise

  • Nanofabrication
  • Organic & Hybrid Solar Cells
  • Semiconductor Nanowires
  • Electrical/Optoelectrical Characterization
  • Semiconductor Device Physics

CFN Research Activities

My research aims developing nanostructured semiconductor architectures and understanding their electronic/optoelectronic properties for energy and electronic device applications. Particular interests include utilization of unconventional nanofabrication (infiltration synthesis), organic semiconductors, and semiconductor nanowires.

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 (Advisor: John E. Fischer)

  • M.S.: Korea Advanced Institute 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 R.O.K. Army

Professional Appointments

  • Staff Scientist, Center for Functional Nanomaterials, Brookhaven National Laboratory, 2010 – 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

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)

M. Liu*, C.-Y. Nam, C.T. Black, J. Kamcev, L. Zhang,  "Enhancing Water Splitting Activity and Chemical Stability of Zinc Oxide Nanowire Photoanodes with Ultrathin Titania Shells",  Journal of Physical Chemistry C 117, 13396 (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)

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)