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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...