2019
DOI: 10.30723/ijp.v12i25.305
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Laser wavelength and energy effect on optical and structure properties for nano titanium oxide prepared by pulsed laser deposit

Abstract: Nano TiO2 thin films on glass substrates were prepared at a constant temperature of (373 K) and base vacuum (10-3 mbar), by pulsed laser deposition (PLD) using Nd:YAG laser at 1064 nm wavelength. The effects of different laser energies between (700-1000)mJ on the properties of TiO2 films was investigated. TiO2 thin films were characterized by X-ray diffraction (XRD) measurements have shown that the polycrystalline TiO2 prepared at laser energy 1000 mJ. Preparation also includes optical transmittance and absorp… Show more

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“…The energy band gaps (E g ) of the three samples were found by plotting hυ versus (ɑhυ) 2 , as shown in figure 6. The calculated energy band gaps for 1064, 532, and 355nm wavelengths were found to be 2.64, 3.24, and 2.96eV, respectively [46,47]. The 532nm wavelength sample has a higher energy band gap value than the 355nm sample could be explained by the fact that the 355nm laser delivered a higher energy effect, thus causing an excessive increase in the target temperature and spattering.…”
Section: -Deposition Parameters Optimization (Different Wavelengths)mentioning
confidence: 99%
“…The energy band gaps (E g ) of the three samples were found by plotting hυ versus (ɑhυ) 2 , as shown in figure 6. The calculated energy band gaps for 1064, 532, and 355nm wavelengths were found to be 2.64, 3.24, and 2.96eV, respectively [46,47]. The 532nm wavelength sample has a higher energy band gap value than the 355nm sample could be explained by the fact that the 355nm laser delivered a higher energy effect, thus causing an excessive increase in the target temperature and spattering.…”
Section: -Deposition Parameters Optimization (Different Wavelengths)mentioning
confidence: 99%