| Autor: |
S. Maheswari, M. Karunakaran, V. Annalakshmi, K. Kasirajan |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Results in Materials, Vol 8, Iss , Pp 100130- (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2590-048X |
| DOI: |
10.1016/j.rinma.2020.100130 |
| Popis: |
Gadolinium-doped tin oxide (SnO2: Gd) thin films were prepared by the nebulizer spray pyrolysis technique on glass substrates using tin (IV) chloride pentahydrate (SnCl2·5H2O) and Gadolinium Sulphate Octahydrate as source materials. Different wt % of doping such as (0%, 1%, 2% and 3%) Gadolinium was used to prepare the spray solution, and their effects on structural, morphological, optical, properties were investigated. X-ray diffraction patterns revealed the polycrystalline tetragonal structure of prepared films. The crystallite size value varies due to Gd doing level. SEM images demonstrated well-aligned tetragonal-shaped nano-grains. Optical band gap values were estimated to be in the range of 3.78–3.82 eV by Tauc’s plot. The effects of Gd doping level on the SnO2 thin films obtained using an excitation wavelength of 350 nm exhibit emission peaks centered at 361 nm, 496 nm, 520 nm, 540 nm and 594 nm respectively. It’s indicated that SnO2 thin films exhibited a broad dominant peak near 396 nm (about 3.14 eV). Raman spectroscopy indicates the spectra for as deposited SnO2 is dominated by presence of strong and sharp peak at 2434 cm−1 along with the peak of smaller intensity at 482 cm−1. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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