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  • Assistant Professor
    Lab Next-Generation Electronics Laboratory

Research Interest

 Next-generation optoelectronic devices (solar cells, light emitting diodes, photodetectors) 
 Synthesis and Characterization of nanostructured organic/inorganic materials 
(metal halide perovskites, chalcogenides, polymers, carbon allotropes, metal oxides) 
 Doping, crystal growth and defect engineering of semiconducting materials 
 Optoelectronic device physics 
 Wearable devices and electronic skin based on flexible/stretchable devices 

- Doping, crystal growth and defect engineering of semiconducting materials 
- Optoelectronic device physics 
- Wearable devices and electronic skin based on flexible/stretchable devices 


  • 2011.3 – 2016.2 Ph.D. in Energy Science, Sungkyunkwan University (SKKU)
  • (Advisor: Prof. Nam-Gyu Park)
  • 2005.3 – 2011.2 B.S. in Electronic and Electrical Engineering, SKKU


  • 2019.9 – present Assistant Professor, SKKU Advanced Institute of Nano Technology & Department of Nano Engineering, SKKU
  • 2016.9 – 2019.7 Postdoctoral Researcher, University of California at Los Angeles (UCLA)
  • (Advisor: Prof. Yang Yang)
  • 2016.3 – 2016.8 Postdoctoral Researcher, SKKU

Journal Article

  • (2022)  Rational selection of the polymeric structure for interface engineering of perovskite solar cells.  JOULE.  online,  online
  • (2022)  Homogeneously Miscible Fullerene inducing Vertical Gradient in Perovskite Thin-Film toward Highly Efficient Solar Cells.  ADVANCED ENERGY MATERIALS.  online,  online
  • (2022)  Mixed-Dimensional Formamidinium Bismuth Iodides Featuring In-Situ Formed Type-I Band Structure for Convolution Neural Networks.  ADVANCED SCIENCE.  online,  online
  • (2022)  Stability-limiting heterointerfaces of perovskite photovoltaics.  NATURE.  online,  online
  • (2022)  Surface Defect Engineering of Metal Halide Perovskites for Photovoltaic Applications.  ACS ENERGY LETTERS.  xx,  xx
  • (2022)  Rethinking the A cation in halide perovskites.  SCIENCE.  375,  6583
  • (2022)  Composition-Dependent Optoelectronic Properties of Mixed 2D/3D Metal Halide Perovskite Films for Light-Emitting Diodes.  ACS APPLIED ENERGY MATERIALS.  online,  online
  • (2022)  Effect of Fluorine Substitution in a Hole Dopant on the Photovoltaic Performance of Perovskite Solar Cells.  ACS ENERGY LETTERS.  7,  online
  • (2021)  Enhancing Performance and Stability of Tin Halide Perovskite Light Emitting Diodes via Coordination Engineering of Lewis Acid-Base Adducts.  ADVANCED FUNCTIONAL MATERIALS.  31,  51
  • (2021)  Surface Reconstruction of Halide Perovskites During Post-treatment.  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY.  143,  18
  • (2021)  Nanocrystalline Polymorphic Energy Funnels for Efficient and Stable Perovskite Light-Emitting Diodes.  ACS ENERGY LETTERS.  6,  5
  • (2021)  Quasi-two-dimensional perovskite light emitting diodes for bright future.  LIGHT-SCIENCE & APPLICATIONS.  10,  1
  • (2021)  In-Situ Nano-Auger Probe of Chloride-Ions during CH3NH3PbI3-xClx Perovskite Formation.  MATERIALS.  14,  5
  • (2021)  Efficient surface passivation of perovskite films by a post-treatment method with a minimal dose.  JOURNAL OF MATERIALS CHEMISTRY A.  9,  6
  • (2021)  Scalable perovskite coating via anti-solvent-free Lewis acid-base adduct engineering for efficient perovskite solar modules.  JOURNAL OF MATERIALS CHEMISTRY A.  9,  5
  • (2021)  Stable and Efficient Methylammonium-, Cesium-, and Bromide-Free Perovskite Solar Cells by In-Situ Interlayer Formation.  ADVANCED FUNCTIONAL MATERIALS.  31,  7
  • (2021)  Dynamic structural property of organic-inorganic metal halide perovskite.  ISCIENCE.  24,  1
  • (2020)  Shallow Iodine Defects Accelerate the Degradation of alpha-Phase Formamidinium Perovskite.  JOULE.  4,  11
  • (2020)  Molecular Interaction Regulates the Performance and Longevity of Defect Passivation for Metal Halide Perovskite Solar Cells.  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY.  142,  47
  • (2020)  Solid-phase hetero epitaxial growth of alpha-phase formamidinium perovskite.  NATURE COMMUNICATIONS.  11,  1

Patent/Intellectual Property

  • 수분 및 광 안정성이 향상된 페로브스카이트 및 이를 이용한 태양전지.  10-2016-0011694.  20170306.  KOREA, REPUBLIC OF