Autor: |
M. Thirumoorthi, J. Thomas Joseph Prakash |
Jazyk: |
angličtina |
Rok vydání: |
2016 |
Předmět: |
|
Zdroj: |
Journal of Asian Ceramic Societies, Vol 4, Iss 1, Pp 124-132 (2016) |
Druh dokumentu: |
article |
ISSN: |
2187-0764 |
DOI: |
10.1016/j.jascer.2016.01.001 |
Popis: |
Indium tin oxide (ITO) thin films have been prepared by jet nebulizer spray pyrolysis technique for different Sn concentrations on glass substrates. X-ray diffraction patterns reveal that all the films are polycrystalline of cubic structure with preferentially oriented along (222) plane. SEM images show that films exhibit uniform surface morphology with well-defined spherical particles. The EDX spectrum confirms the presence of In, Sn and O elements in prepared films. AFM result indicates that the surface roughness of the films is reduced as Sn doping. The optical transmittance of ITO thin films is improved from 77% to 87% in visible region and optical band gap is increased from 3.59 to 4.07 eV. Photoluminescence spectra show mainly three emissions peaks (UV, blue and green) and a shift observed in UV emission peak. The presence of functional groups and chemical bonding was analyzed by FTIR. Hall effect measurements show prepared films having n-type conductivity with low resistivity (3.9 × 10−4 Ω-cm) and high carrier concentrations (6.1 × 1020 cm−3). |
Databáze: |
Directory of Open Access Journals |
Externí odkaz: |
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