Research Record

• Tailored Band Alignment for Improved Carrier Transport in Composition-Controlled Sb2(S,Se)3 Journal of Physical Chemistry Letters, 2024, v.15 no.10, 2825-2833
  SCIE Scopus dColl.
• Vertical plane depth-resolved surface potential and carrier separation characteristics in flexible CZTSSe solar cells with over 12% efficiency Carbon Energy, 2024, v.6 no.3, e434
  SCIE Scopus dColl.
• Advance Supply of Ag and Ga-Se for Increased Backside Ga and Enhanced Cu(In,Ga)Se2 Solar Cell Efficiency ACS Applied Energy Materials, 2023, v.6 no.24, 12180-12189
  SCIE Scopus dColl.
• Anisotropic Charge Transport in Cu(In,Ga)Se-2 by Heavy Alkali Postdeposition Treatment for Reducing Cell-to-Module Efficiency Loss in Monolithically Integrated Photovoltaic Modules SOLAR RRL, 2023, v.7 no.10, 0
  SCIE Scopus dColl.
• Improving open-circuit voltage deficit by interface passivation via Li treatment in Cu2ZnSn(S,Se)4 solar cells Journal of Materials Chemistry A, 2023, v.11 no.46, 25555-25562
  SCIE Scopus dColl.
• Photo-excited carrier transport and secondary phases of Na-engineered kesterite flexible thin films Solar Energy Materials and Solar Cells, 2023, v.250, 112091
  SCIE Scopus dColl.
• Reforming material chemistry of CIGS solar cells via a precise Ag doping strategy JOURNAL OF MATERIALS CHEMISTRY A, 2023, v.11 no.36, 19546-19555
  SCIE Scopus dColl.
• Wide-bandgap perovskites for multijunction solar cells: improvement of crystalline quality of Cs0.1FA0.9PbI1.4Br1.6 by using lead thiocyanate Journal of Materials Chemistry A, 2023, v.11 no.19, 10254-10266
  SCIE Scopus dColl.
• Enhanced Light Absorption and Efficient Carrier Collection in MoS2 Monolayers on Au Nanopillars Nanomaterials, 2022, v.12 no.9, 1567
  SCIE Scopus dColl.
• Flexible kesterite thin-film solar cells under stress npj Flexible Electronics, 2022, v.6 no.1, 91
  SCIE Scopus dColl.
• Grain boundary passivation via balancing feedback of hole barrier modulation in HfO2-x for nanoscale flexible electronics Nano Convergence, 2022, v.9 no.43, 1-13
  KCI dColl.
• Grain boundary passivation via balancing feedback of hole barrier modulation in HfO2-x for nanoscale flexible electronics Nano Convergence, 2022, v.9 no.1, 43
  SCIE Scopus dColl.
• Halide perovskite single crystals: growth, characterization, and stability for optoelectronic applications Nanoscale, 2022, v.14 no.26, 9248-9277
  SCIE Scopus dColl.
• Improvement of Open-Circuit Voltage Deficit via Pre-Treated NH4+ Ion Modification of Interface between SnO2 and Perovskite Solar Cells SMALL, 2022, v.18 no.44, 2204173
  SCIE Scopus dColl.
• Parallel Alignment of Methylammonium Cations in an Orthorhombic CH3NH3PbCl3Single Crystal Observed by Polarized Micro-Raman Scattering Spectroscopy Chemistry of Materials, 2022, v.34 no.7, 2972-2980
  SCIE Scopus dColl.
• Tailored Band Structure of Cu(In,Ga)Se-2 Thin-Film Heterojunction Solar Cells: Depth Profiling of Defects and the Work Function ACS APPLIED MATERIALS & INTERFACES, 2022, v.14 no.30, 34697-34705
  SCIE Scopus dColl.
• UV and Visible Photodetectors of MAPbBr3 and MAPbCl3 Perovskite Single Crystals via Single Photocarrier Transport Design Advanced Optical Materials, 2022, v.10 no.7, 2102175
  SCIE Scopus dColl.
• Understanding the Space-Charge Layer in SnO2 for Enhanced Electron Extraction in Hybrid Perovskite Solar Cells ACS APPLIED MATERIALS & INTERFACES, 2022, v.14 no.42, 48229-48239
  SCIE Scopus dColl.
• Chemical tailoring of sodium content for optimization of interfacial band bending and alignment in flexible kesterite solar cells Solar Energy Materials and Solar Cells, 2021, v.230, 111243
  SCIE Scopus dColl.
• Chlorine-passivation of ozone-treated SnO2 thin films: Occurrence of oxygen vacancies to manipulate conducting states and bipolarities in resistive switching Applied Surface Science, 2021, v.555, 149625
  SCIE Scopus dColl.
• Exotic optoelectronic behaviors in CH3NH3PbCl3perovskite single crystals: Co-existence of free and bound excitons with structural phase transitions Applied Physics Letters, 2021, v.118 no.14, 143301
  SCIE Scopus dColl.
• High speed growth of MAPbBr3single crystals: Via low-temperature inverting solubility: Enhancement of mobility and trap density for photodetector applications Nanoscale, 2021, v.13 no.17, 8275-8282
  SCIE Scopus dColl.
• Photo-induced defects in MAPbBr(3) single crystals JOURNAL OF PHYSICS-ENERGY, 2021, v.3 no.4, 44005
  SCIE Scopus dColl.
• Photon-induced defects and dynamics of photogenerated carriers in Cu(In,Ga)Se-2 thin film solar cells SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2021, v.220, 110860
  SCIE Scopus dColl.
• Reduced extrinsic recombination process in anatase and rutile TiO2 epitaxial thin films for efficient electron transport layers Scientific Reports, 2021, v.11 no.1, 6810
  SCIE Scopus dColl.
• Sodium Effects on the Diffusion, Phase, and Defect Characteristics of Kesterite Solar Cells and Flexible Cu2ZnSn(S,Se)4 with Greater than 11% Efficiency Advanced Functional Materials, 2021, v.31 no.29, 2102238
  SCIE Scopus dColl.
• Carrier transport and surface potential over phase variations in the surface and bulk of highly efficient Cu2ZnSn(S,Se)4 solar cells Progress in Photovoltaics: Research and Applications, 2020, v.28 no.5, 382-392
  SCIE Scopus dColl.
• Impact of Na Doping on the Carrier Transport Path in Polycrystalline Flexible Cu2ZnSn(S,Se)4 Solar Cells Advanced Science, 2020, v.7 no.21, 1903085
  SCIE Scopus dColl.
• Low Voltage and Ferroelectric 2D Electron Devices Using Lead-Free BaxSr1-xTiO3 and MoS2 Channel Advanced Functional Materials, 2020, v.30 no.7, 1908210
  SCIE Scopus dColl.
• Mechanisms of extrinsic alkali incorporation in GIGS solar cells on flexible polyimide elucidated by nanoscale and quantitative analyses NANO ENERGY, 2020, v.67, 104201
  SCIE Scopus dColl.
• Photo-response in 2D metal chalcogenide-ferroelectric oxide heterostructure controlled by spontaneous polarization Journal of Materials Chemistry C, 2020, v.8 no.11, 3724-3729
  Scopus dColl.
• Point defects, compositional fluctuations, and secondary phases in non-stoichiometric kesterites JOURNAL OF PHYSICS-ENERGY, 2020, v.2 no.1, 12002
  SCIE dColl.
• Raman Scattering Studies of the Structural Phase Transitions in Single-Crystalline CH3NH3PbCl3 JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2020, v.11 no.10, 3773-3781
  SCIE Scopus dColl.
• Sodium-assisted passivation of grain boundaries and defects in Cu2ZnSnSe4 thin films PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2020, v.22 no.14, 7597-7605
  SCIE Scopus dColl.
• Unraveling interface characteristics of Zn(O,S)/Cu(In,Ga)Se-2 at nanoscale: Enhanced hole transport by tuning band offsets APPLIED SURFACE SCIENCE, 2020, v.509, 144782
  SCIE Scopus dColl.
• A simple and robust route toward flexible CIGS photovoltaic devices on polymer substrates: Atomic level microstructural analysis and local opto-electronic investigation SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2019, v.195, 280-290
  SCIE Scopus dColl.
• Effects of Organic Cations on Carrier Transport at the Interface between Perovskites and Electron Transport Layers in (FA,MA)SnI3 Solar Cells JOURNAL OF PHYSICAL CHEMISTRY C, 2019, v.123 no.51, 30833-30841
  SCIE Scopus dColl.
• Enhanced carrier transport over grain boundaries in lead-free CH3NH3Sn(I1-xBrx)(3) (0 <= x <= 1) perovskite solar cells NANOTECHNOLOGY, 2019, v.30 no.31, 314005
  SCIE Scopus dColl.
• Phase formation and local charge transport of lead-free CH3NH3Sn(I1-xBrx)(3) (0 <= x <= 1) perovskite solar cells fabricated by solvent optimization SOLAR ENERGY, 2019, v.186, 136-144
  SCIE Scopus dColl.
• Reconfigurable Dipole-Induced Resistive Switching of MoS2 Thin Layers on Nb:SrTiO3 ACS APPLIED MATERIALS & INTERFACES, 2019, v.11 no.49, 46344-46349
  SCIE Scopus dColl.
• The characteristics of Cu(In, Ga)Se 2 thin-film solar cells by bandgap grading Journal of Industrial and Engineering Chemistry, 2019, v.76, 437-442
  SCIE Scopus KCI dColl.
• Adjusting the Anisotropy of 1D Sb2Se3 Nanostructures for Highly Efficient Photoelectrochemical Water Splitting ADVANCED ENERGY MATERIALS, 2018, v.8 no.14
  SCIE Scopus dColl.
• Enhanced electrical properties of Li-doped NiOx hole extraction layer in p-i-n type perovskite solar cells CURRENT APPLIED PHYSICS, 2018, v.18, S55-S59
  SCIE Scopus KCI dColl.
• High photo-conversion efficiency Cu2ZnSn(S,Se)(4) thin-film solar cells prepared by compound-precursors and metal-precursors SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2018, v.183, 129-136
  SCIE Scopus dColl.
• Low-temperature growth and electronic structures of ambipolar Yb-doped zinc tin oxide transparent thin films Applied Surface Science, 2018, v.441, 49-54
  SCIE Scopus dColl.
• Role of Na in solution-processed CuInSe2 (CISe) devices: A different story for improving efficiency NANO ENERGY, 2018, v.48, 401-412
  SCIE Scopus dColl.
• Single Phase Formation of SnS Competing with SnS2 and Sn2S3 for Photovoltaic Applications: Optoelectronic Characteristics of Thin-Film Surfaces and Interfaces Journal of Physical Chemistry C, 2018, v.122 no.6, 3523-3532
  SCIE Scopus dColl.
• Surface potential mapping and n-type conductivity in organic-inorganic lead iodide crystals CRYSTENGCOMM, 2018, v.20 no.41, 6551-6556
  SCIE Scopus dColl.
• The alterations of carrier separation in kesterite solar cells NANO ENERGY, 2018, v.52, 38-53
  SCIE Scopus dColl.
• Virtual Out-of-Plane Piezoelectric Response in MoS2 Layers Controlled by Ferroelectric Polarization ACS APPLIED MATERIALS & INTERFACES, 2018, v.10 no.1, 1334-1339
  SCIE Scopus dColl.
• Control of work function of MoS2 with ferroelectric polarization in honeycomb-like heterostructure APPLIED PHYSICS LETTERS, 2017, v.110 no.19
  SCIE Scopus dColl.
• Memory effect behavior with respect to the crystal grain size in the organic-inorganic hybrid perovskite nonvolatile resistive random access memory Scientific Reports, 2017, v.7 no.1
  SCIE Scopus dColl.
• Optical and Scanning Probe Identification of Electronic Structure and Phases in CH3NH3PbBr3 Crystal Journal of Physical Chemistry C, 2017, v.121 no.40, 21930-21934
  SCIE Scopus dColl.
• Strain-induced non-linear optical characteristics of pyroelectric PbVO3 epitaxial thin films OPTICAL MATERIALS EXPRESS, 2017, v.7 no.1, 62-72
  SCIE Scopus dColl.
• Time-Resolved Pump-Probe Measurement of Optical Rotatory Dispersion in Chiral Metamaterial ADVANCED OPTICAL MATERIALS, 2017, v.5 no.15
  SCIE Scopus dColl.
• Trapping charges at grain boundaries and degradation of CH3NH3Pb(I1-xBrx)(3) perovskite solar cells NANOTECHNOLOGY, 2017, v.28 no.31
  SCIE Scopus dColl.
• Effects of Mo back-contact annealing on surface potential and carrier transport in Cu2ZnSnS4 thin film solar cells RSC ADVANCES, 2016, v.6 no.105, 103337-103345
  SCIE Scopus dColl.
• Effects of Postsynthesis Thermal Conditions on Methylammonium Lead Halide Perovskite: Band Bending at Grain Boundaries and Its Impacts on Solar Cell Performance JOURNAL OF PHYSICAL CHEMISTRY C, 2016, v.120 no.38, 21330-21335
  SCIE Scopus dColl.
• Hetero-epitaxial growth and large piezoelectric effects in (001) and (111) oriented PbTiO3-LaNiO3 multilayers JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2016, v.49 no.12
  SCIE Scopus dColl.
• High photo-conversion efficiency in double-graded Cu(In,Ga)(S,Se)2 thin film solar cells with two-step sulfurization post-treatment Progress in Photovoltaics: Research and Applications, 2016, v.25 no.2
  SCIE Scopus dColl.
• IBAD-MgO technology for coated conductors Progress in Superconductivity and Cryogenics (PSAC), 2016, v.18 no.3, 1-5
  Scopus KCI dColl.
• Identification of marcasite in pyrite FeS2 thin films and the films' carrier transport characteristics RSC ADVANCES, 2016, v.6 no.84, 81394-81399
  SCIE Scopus dColl.
• Local transport properties of coated conductors by laser-scan imaging methods Progress in Superconductivity and Cryogenics (PSAC), 2016, v.18 no.2, 1-4
  Scopus KCI dColl.
• Microstructural investigation of phases and pinning properties in MBa2Cu3O7-x (M Superconductor Science and Technology, 2016, v.29 no.3
  SCIE Scopus dColl.
• Effects of the compositional ratio distribution with sulfurization temperatures in the absorber layer on the defect and surface electrical characteristics of Cu2ZnSnS4 solar cells PROGRESS IN PHOTOVOLTAICS, 2015, v.23 no.12, 1771-1784
  SCIE Scopus dColl.
• Efficient Carrier Separation and Intriguing Switching of Bound Charges in Inorganic-Organic Lead Halide Solar Cells JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2015, v.6 no.12, 2355-2362
  SCIE Scopus dColl.
• Enhancement of photo-conversion efficiency in Cu2ZnSn(S,Se)4 thin-film solar cells by control of ZnS precursor-layer thickness Progress in Photovoltaics: Research and Applications, 2015, v.24 no.3
  SCIE Scopus dColl.
• Improved dielectric properties of CaCu3Ti4O12 films with a CaTiO3 interlayer on Pt/TiO2/SiO2/Si substrates prepared by pulsed laser deposition Electronic Materials Letters, 2015, v.11 no.6, 1003-1011
  SCIE KCI Scopus dColl.
• Incorporation of cobalt ions into magnetoelectric gallium ferrite epitaxial films: Tuning of conductivity and magnetization RSC Advances, 2015, v.5 no.43, 34265-34271
  SCIE Scopus dColl.
• Influence of surface properties on the performance of Cu(In,Ga)(Se,S)2 thin-film solar cells using Kelvin probe force microscopy RSC Advances, 2015, v.5 no.51, 40719-40725
  SCIE Scopus dColl.
• Influence of the ZnS precursor thickness on high efficiency Cu2ZnSn(S,Se)4 thin-film solar cells grown by stacked-sputtering and selenization process 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015, 2015, 14-19 Jun 2015
  Scopus dColl.
• Macroscopic and microscopic electrical properties of Cu(In,Ga)Se2 thin-film solar cells with various Ga/(In + Ga) contents Current Applied Physics, 2015, v.15, S44-S50
  SCIE KCI Scopus dColl.
• Nanostructured p-type CZTS thin films prepared by a facile solution process for 3D p-n junction solar cells NANOSCALE, 2015, v.7 no.25, 11182-11189
  SCIE Scopus dColl.
• Optical and surface probe investigation of secondary phases in Cu2ZnSnS4 films grown by electrochemical deposition SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2015, v.139, 10-18
  SCIE Scopus dColl.
• Raman scattering studies of Cu2ZnSnS4 thin films: Local distribution of the secondary phase Cu2−xS and the effect of KCN etching on Cu2−xS Journal of the Korean Physical Society, 2015, v.66 no.1, 117-122
  SCIE KCI Scopus dColl.
• Raman scattering studies of the lattice dynamics in layered MoS2 JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2015, v.66 no.10, 1575-1580
  SCIE Scopus KCI dColl.
• Room-temperature polarization switching and antiferromagnetic coupling in epitaxial (Ga,Fe)2O3/SrRuO3 heterostructures Applied Physics Letters, 2015, v.106 no.14
  SCIE Scopus dColl.
• Spatial Investigation on Structural Properties of GdBa2Cu3O7-x Coated Conductors Grown on IBAD-MgO Based Stainless-Steel Substrates IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2015, v.25 no.3
  SCIE Scopus dColl.
• Ultra-large current transport in thick SmBa2Cu3O7-x films grown by reactive co-evaporation PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2015, v.513, 29-34
  SCIE Scopus dColl.
• Coexistence of piezoelectricity and electric conduction in oxygen-deficient NaNbO3-delta sub-micron cubes MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2014, v.182, 81-85
  SCIE Scopus dColl.
• Composition variations in Cu2ZnSnSe4 thin films analyzed by X-ray diffraction, energy dispersive X-ray spectroscopy, particle induced X-ray emission, photoluminescence, and Raman spectroscopy Thin Solid Films, 2014, v.562, 109-113
  SCIE Scopus dColl.
• Effects of Cu2-xS phase removal on surface potential of Cu2ZnSnS4 thin-films grown by electroplating CURRENT APPLIED PHYSICS, 2014, v.14 no.12, 1665-1668
  SCIE KCI dColl.
• Ferromagnetism and Ru-Ru distance in SrRuO3 thin film grown on SrTiO3 (111) substrate NANOSCALE RESEARCH LETTERS, 2014, v.9, 8
  Scopus SCIE dColl.
• Lead-free LiNbO3 nanowire-based nanocomposite for piezoelectric power generation NANOSCALE RESEARCH LETTERS, 2014, v.9, 4
  Scopus SCIE dColl.
• Nanoscale observation of surface potential and carrier transport in Cu2ZnSn(S,Se)(4) thin films grown by sputtering-based two-step process NANOSCALE RESEARCH LETTERS, 2014, v.9, 10
  Scopus SCIE dColl.
• Observation of adhesive force and energy of adsorbents on rubber substrates by atomic force microscopy SURFACE AND INTERFACE ANALYSIS, 2014, v.46 no.7, 497-504
  SCIE Scopus dColl.
• Optical imaging methods for qualification of superconducting wires Progress in Superconductivity and Cryogenics (PSAC), 2014, v.16 no.4, 21-25
  KCI Scopus dColl.
• Piezoelectric power generation of vertically aligned lead-free (K,Na)NbO3 nanorod arrays RSC Advances, 2014, v.4 no.56, 29799-29805
  SCIE Scopus dColl.
• Size dependent bipolar resistance switching of NiO nanodots for low-power and multi-state operation NANOTECHNOLOGY, 2014, v.25 no.41
  SCIE Scopus dColl.
• Strong pinning in very fast grown reactive co-evaporated GdBa2Cu3O7 coated conductors APL MATERIALS, 2014, v.2 no.8
  SCIE dColl.
• Structural properties and phase formation of epitaxial PbVO3 thin films grown on LaAlO3(001) by pulsed laser deposition JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2014, v.47 no.24, Article ID 245302
  SCIE Scopus dColl.
• Surface potential on grain boundaries and intragrains of highly efficient Cu2ZnSn(S,Se)4 thin-films grown by two-step sputtering process Solar Energy Materials and Solar Cells, 2014, v.127, 129-135
  SCIE Scopus dColl.
• The structure, phase and chemical composition of CZTSe thin films Functional Materials, 2014, v.21 no.2, 164-170
  Scopus dColl.
• Effect of selenization on local current and surface potential of sputtered Cu2ZnSn(S, Se)4 thin-films with 8% conversion efficiency Conference Record of the IEEE Photovoltaic Specialists Conference, 2013, 2013, 383-385
  Scopus dColl.
• Effects of iron concentration and cationic site disorder on the optical properties of magnetoelectric gallium ferrite thin films RSC Advances, 2013, v.3 no.9, 3124-3130
  SCIE Scopus dColl.
• Effects of substrates on structural and optical properties of Cu-poor CuGaSe2 thin films prepared by in-situ co-evaporation Current Applied Physics, 2013, v.13 no.5, 907-912
  SCIE KCI Scopus dColl.
• [학술지논문] Chemical tailoring of sodium content for optimization of interfacial band bending and alignment in flexible kesterite solar cells SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2021, v.230 no.0 , 11243-11243
  SCI
• [학술지논문] Photo-induced defects in MAPbBr(3) single crystals JOURNAL OF PHYSICS-ENERGY, 2021, v.3 no.4 , 044005-044005
  SCIE

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