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Chang-Yong Nam

Staff Scientist | Materials Synthesis and Characterization


  • 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.


  • 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

  • Staff Scientist, Center for Functional Nanomaterials, Brookhaven National Laboratory, 2010 – Present
  • Adjunct Professor, Department of Materials Science and Engineering, Stony Brook University, 2014-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

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)