Hyeonsik Cheong

Research interests

Publications

• Coherent many-body exciton in van der Waals antiferromagnet NiPS3

  Nature · 2020 · 10.1038/s41586-020-2520-5

• Achieving Reproducible and High-Efficiency (>21%) Perovskite Solar Cells with a Presynthesized FAPbI3 Powder

  ACS Energy Letters · 2019 · 10.1021/acsenergylett.9b02348

• Perovskite Cluster-Containing Solution for Scalable D-Bar Coating toward High-Throughput Perovskite Solar Cells

  ACS Energy Letters · 2019 · 10.1021/acsenergylett.9b00042

• Suppression of magnetic ordering in XXZ-type antiferromagnetic monolayer NiPS3

  Nature Communications · 2019 · https://doi.org/10.1038/s41467-018-08284-6

• 6.5% Certified Efficiency Sb 2 Se 3 Solar Cells Using PbS Colloidal Quantum Dot Film as Hole-Transporting Layer

  ACS Energy Letters · 2017 · 10.1021/acsenergylett.7b00648

• Probing Evolution of Twist-Angle-Dependent Interlayer Excitons in MoSe 2 /WSe 2 van der Waals Heterostructures

  ACS Nano · 2017 · 10.1021/acsnano.7b00640

• Ising-Type Magnetic Ordering in Atomically Thin FePS 3

  Nano Letters · 2016 · https://doi.org/10.1021/acs.nanolett.6b03052

• A band-gap-graded CZTSSe solar cell with 12.3% efficiency

  Journal of Materials Chemistry A · 2016 · 10.1039/c6ta01558a

• Anomalous polarization dependence of Raman scattering and crystallographic orientation of black phosphorus

  Nanoscale · 2015 · 10.1039/c5nr04349b

• Bright visible light emission from graphene

  Nature Nanotechnology · 2015 · 10.1038/nnano.2015.118

• Estimation of Young’s Modulus of Graphene by Raman Spectroscopy

  Nano Letters · 2012 · https://doi.org/10.1021/nl301073q

• Friction Anisotropy–Driven Domain Imaging on Exfoliated Monolayer Graphene

  Science · 2011 · 10.1126/science.1207110

• Strain-Dependent Splitting of the Double-Resonance Raman Scattering Band in Graphene

  Physical Review Letters · 2011 · 10.1103/physrevlett.106.155502

• Negative Thermal Expansion Coefficient of Graphene Measured by Raman Spectroscopy

  Nano Letters · 2011 · https://doi.org/10.1021/nl201488g

• Thermal conductivity of suspended pristine graphene measured by Raman spectroscopy

  Physical Review B · 2011 · https://doi.org/10.1103/physrevb.83.081419

• Determination of band gap energy (Eg) of Cu2ZnSnSe4 thin films: On the discrepancies of reported band gap values

  Applied Physics Letters · 2010 · 10.1063/1.3457172

• Interference effect on Raman spectrum of graphene on SiO 2 / Si

  Physical Review B · 2009 · 10.1103/physrevb.80.125422

• Variations in the Raman Spectrum as a Function of the Number ofGraphene Layers

  Journal of the Korean Physical Society · 2009 · 10.3938/jkps.55.1299

• Structures of Ionic Liquids with Different Anions Studied by Infrared Vibration Spectroscopy

  The Journal of Physical Chemistry B · 2008 · 10.1021/jp7120752

• Structural Change of 1-Butyl-3-methylimidazolium Tetrafluoroborate + Water Mixtures Studied by Infrared Vibrational Spectroscopy

  The Journal of Physical Chemistry B · 2008 · 10.1021/jp0746650

• Electrochromic coloration efficiency of a-WO3−y thin films as a function of oxygen deficiency

  Applied Physics Letters · 1999 · 10.1063/1.124782

• Electrochromic mechanism in a-WO3−y thin films

  Applied Physics Letters · 1999 · 10.1063/1.123268

• Dye-Sensitized TiO 2 Solar Cells: Structural and Photoelectrochemical Characterization of Nanocrystalline Electrodes Formed from the Hydrolysis of TiCl 4

  The Journal of Physical Chemistry B · 1999 · 10.1021/jp984529i

• Raman spectroscopic studies of electrochromic a-WO3

  Electrochimica Acta · 1999 · 10.1016/s0013-4686(99)00027-4

• Raman spectroscopic studies of electrochromic a-WO3

  Electrochimica Acta · 1999 · 10.1016/s0013-4686(99)00027-4

• Size-Dependent Spectroscopy of InP Quantum Dots

  The Journal of Physical Chemistry B · 1997 · 10.1021/jp9704731

Current projects

No projects listed.