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  1. No Access

    Article

    Optical properties of LaFeO3 films studied using spectroscopic ellipsometry

    LaFeO3 film is an intermediate charge transfer/Mott–Hubbard insulator. LaFeO3 thin films were grown on SrTiO3 substrates using radio frequency magnetron sputtering deposition method at 500 °C. After growth, the L...

    Jae Jun Lee, Da Hee Kim, Eun Ji Kim, Hosun Lee in Journal of the Korean Physical Society (2024)

  2. No Access

    Article

    Electrical and Optical Properties of Amorphous Indium-Zinc-Tin Oxide Thin Films: Oxygen Flow Dependence

    In this study, the electrical and the optical properties of the amorphous indium-zinc-tin oxide (IZTO) thin films that had been grown using a cosputtering system were investigated as a function of the oxygen f...

    Hyeon Seob So, Dae Ho Jung, Hae-Jun Seok… in Journal of the Korean Physical Society (2020)

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    Article

    Thermally-driven unequal cation vacancy formation and its effect on the dielectric properties in K0.5Na0.5NbO3 ceramics

    The formation of cation vacancies can be useful for electro-chemical devices. In this regard, an understanding of vacancy formation is an important subject for enhancing current electrochemical devices and for...

    Gowoon Kim, Hyeonjun Kong, Dong** Kim, Hosu Lee… in Journal of the Korean Physical Society (2017)

  4. No Access

    Article

    Optical and electrical properties of Sn-doped ZnO thin films studied via spectroscopic ellipsometry and hall effect measurements

    We investigated the optical and the electrical properties of Sn-doped ZnO thin films grown via RF co-sputtering deposition methods at room temperature. Through annealing, the carrier concentrations and mobilit...

    Hyeon Seob So, Sang Bin Hwang, Dae Ho Jung… in Journal of the Korean Physical Society (2017)

  5. No Access

    Article

    Electrical and optical properties of VO2 thin films grown on various sapphire substrates by using RF sputtering deposition

    VO2 thin films were grown on a-, c-, m-, and r-plane sapphire and SiO2/Si substrates under identical conditions by using RF sputtering deposition from a VO2 target. The structural and the morphological properties...

    Dae Ho Jung, Hyeon Seob So, Kun Hee Ko… in Journal of the Korean Physical Society (2016)

  6. No Access

    Article

    Optical properties of amorphous Ge1−x Se x and Ge1−x−y Se x As y thin films — optical gap bowing and phonon modes

    We investigated the optical properties of Ge1−x Se x and Ge1−x−y Se x As y a...

    Hosuk Lee, Hyeon Seob So, Hosun Lee… in Journal of the Korean Physical Society (2014)

  7. No Access

    Article

    Ultrafast coherent phonon dynamics in Ge2Sb2Te5 thin films

    We investigated the coherent acoustic and optical phonon dynamics in a Ge2Sb2Te5 phase change material by using pump-probe spectroscopy. Oscillating reflectivity changes with oscillation period and de-phasing tim...

    Dong Hak Kim, J. W. Park, Hosun Lee, D. Lim in Journal of the Korean Physical Society (2013)

  8. No Access

    Article

    Optical properties of organic semiconductor thin films: 2,6,9,10-tetrakis(phenylethynyl)anthracene

    Two kinds of anthracene derivative thin films, 2, 6-bis((4-hexylphenyl)ethynyl)-9, 10-bis(phenyl ethynyl)anthracene (B-ant-THB) and 9, 10-bis((4-hexyl phenyl)ethynyl)-2, 6-bis (phenyl ethynyl) anthracene (HB-a...

    Hosuk Lee, Hosun Lee, Jung A. Hur, Min Ju Cho… in Journal of the Korean Physical Society (2013)

  9. No Access

    Article

    Optical study of bulk and thin-film tin dioxide

    We grew nano-crystalline SnO2 thin films on Si substrates by using RF magnetron sputtering deposition method. We examined the microstructure of the SnO2 thin films via X-ray diffraction (XRD) and the optical prop...

    Hyungkeun Jang, Jun-Woo Park, Sung Kim… in Journal of the Korean Physical Society (2012)