Optical properties of thermally evaporated amorphous As40S60−xSex films

González-Leal, J.M.; Prieto-Alcón, R.; Ángel, J. A.; Márquez, E.

doi:10.1016/s0022-3093(02)01430-8

Cited by 69 publications

(26 citation statements)

References 18 publications

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“…The estimated optical band gaps of TiO 2 films are 3.74 eV (400 °C); 3.73 eV (500 °C) and 3.70 eV (600 °C) with a slight decrease after increasing the annealing temperature. These results are in agreement with literature data for TiO 2 films, where the Eg varies between 3.6 and 4 eV [39,40].…”

Section: Fig 4 Uv-vis Spectra Of Sol-gel Tio 2 (A) and Zno-tio 2 (Bsupporting

confidence: 93%

“…The large difference with the obtained results might be due to the different crystalline state (polycrystalline structure), grain sizes and crystalline structure of the thin films and bulk material [39,41 ]. The E g values of the mixed films are in the range of 3.88 and 3.91 eV as can be seen in Table 3.…”

Section: Fig 4 Uv-vis Spectra Of Sol-gel Tio 2 (A) and Zno-tio 2 (Bmentioning

confidence: 65%

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Preparation and characterization of ZnO–TiO2 films obtained by sol-gel method

Ivanova

Harizanova

Koutzarova

et al. 2011

Journal of Non-Crystalline Solids

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The sol-gel route has been applied to obtain ZnO-TiO 2 thin films. For comparison, pure TiO 2 and ZnO films are also prepared from the corresponding solutions. The films are deposited by a spin-coated method on silicon and glass substrates. Their structural and vibrational properties have been studied as a function of the annealing temperatures (400-750 °C). Pure ZnO films crystallize in a wurtzite modification at a relatively low temperature of 400 °C, whereas the mixed oxide films show predominantly amorphous structure at this temperature. XRD analysis shows that by increasing the annealing temperatures, the sol-gel Zn/Ti oxide films reveal a certain degree of crystallization and their structures are found to be mixtures of wurtzite ZnO, Zn 2 TiO 4 , anatase TiO 2 and amorphous fraction. The XRD analysis presumes that Zn 2 TiO 4 becomes a favored phase at the highest annealing temperature of 750 °C. The obtained thin films are uniform with no visual defects. The optical properties of ZnO-TiO 2 films have been compared with those of single component films (ZnO and TiO 2 ). The mixed oxide films present a high transparency with a slight decrease by increasing the annealing temperature.

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Section: Fig 4 Uv-vis Spectra Of Sol-gel Tio 2 (A) and Zno-tio 2 (Bsupporting

confidence: 93%

Section: Fig 4 Uv-vis Spectra Of Sol-gel Tio 2 (A) and Zno-tio 2 (Bmentioning

confidence: 65%

Preparation and characterization of ZnO–TiO2 films obtained by sol-gel method

Ivanova

Harizanova

Koutzarova

et al. 2011

Journal of Non-Crystalline Solids

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show abstract

“…The observed increase in refractive index with increasing film thickness may be attributed to the increase in density of the films and the increase in crystallite size. The increase in refractive index with increasing film thickness is in a good agreement with the previously reported results [8,14,26,27] …”

Section: Determination the Refractive Index And Thickness Of CDI 2 Thsupporting

confidence: 92%

Thickness dependence of structural and optical properties of cadmium iodide thin films

Yahia

Shapaan

Ismail

et al. 2015

Journal of Alloys and Compounds

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“…This could be related to the fact that in the latter film-preparation technique, the formation of molecular species containing homopolar bonds of the type AsAs, S-S and Se-Se, with higher bonding energies (382.0, 425.3 and 332.6 kJ/mol, respectively) than the heteropolar ones As-S and As-Se (379.5 and 96 kJ/ mol, respectively) [16], would be favored.…”

Section: Discussionmentioning

confidence: 99%