Vacuum annealing level evolution of titania thin films: Functionality as potential optical window in solar cells

Agarwal, Reema; Himanshu, -; Patel, S.L.; Chander, Subhash; Ameta, Chetna; Dhaka, M.S.

doi:10.1016/j.matlet.2020.128368

Cited by 14 publications

(2 citation statements)

References 16 publications

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“…The electron beam evaporation technique has the advantage of higher deposition rate and lower impurity level and is broadly used as a thin film coating method for the deposition of Ti or Ti:X films onto indium tin oxide [ 33 , 34 , 35 ]. Krysa et al [ 33 ] reported that films prepared by using electron beam evaporation have poor adhesion to the TCO, as compared to films deposited by magnetron sputtering.…”

Section: Description Of Deposition Techniques Of Tco-ti: Metal Thin F...mentioning

confidence: 99%

The Anodization of Thin Titania Layers as a Facile Process towards Semitransparent and Ordered Electrode Material

2022

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Photoanodes consisting of titania nanotubes (TNTs) grown on transparent conductive oxides (TCO) by anodic oxidation are being widely investigated as a low-cost alternative to silicon-based materials, e.g., in solar light-harvesting applications. Intending to enhance the optical properties of those photoanodes, the modification of the surface chemistry or control of the geometrical characteristics of developed TNTs has been explored. In this review, the recent advancement in light-harvesting properties of transparent anodic TNTs formed onto TCO is summarized. The physical deposition methods such as magnetron sputtering, pulsed laser deposition and electron beam evaporation are the most reported for the deposition of Ti film onto TCO, which are subsequently anodized. A concise description of methods utilized to improve the adhesion of the deposited film and achieve TNT layers without cracks and delamination after the anodization is outlined. Then, the different models describing the formation mechanism of anodic TNTs are discussed with particular focus on the impact of the deposited Ti film thickness on the adhesion of TNTs. Finally, the effects of the modifications of both the surface chemistry and morphological features of materials on their photocatalyst and photovoltaic performances are discussed. For each section, experimental results obtained by different research groups are evoked.

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Section: Description Of Deposition Techniques Of Tco-ti: Metal Thin F...mentioning

confidence: 99%

The Anodization of Thin Titania Layers as a Facile Process towards Semitransparent and Ordered Electrode Material

2022

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“…We note that the spectra of these two samples showed a remarkable interference behavior explained by the multiple constructive reflections which may verified the thickness uniformity of the films. The high transmission rate may be due to the low scattering on the surface, which confirms the low roughness of the surface, this character is considered important for the performance of the photovoltaic device [40] [ [11].…”

Section: Optical Characterizationmentioning

confidence: 99%

Effect of vacuum annealing on the properties of one step thermally evaporated Sb₂S₃thin films for photovoltaic applications

Gnenna

Khémiri

Kong

et al. 2021

Eur. Phys. J. Appl. Phys.

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Sb2S3 powder was successfully synthesized by solid state reaction technique using high-purity elemental antimony and sulfur. Sb2S3 thin films were deposited on unheated glass substrates by one step thermal evaporation and annealed under vacuum atmosphere for 2 hours at different temperatures 150, 200 and 250 °C. Different characterization techniques were used to better understand the behavior of the Sb2S3 material. X-ray diffraction (XRD) and Raman spectroscopy confirmed the formation of pure Sb2S3 powder with lattice parameters a = 11.07 Å, b = 11.08 Å and c = 3.81 Å. The effect of vacuum annealing temperature on the properties of the films was studied. XRD analysis revealed that as-deposited and annealed films at 150ºC were amorphous in nature whereas those annealed at T ≥ 200°C were polycrystalline with a preferred orientation along (201) plane. The crystallite size of the polycrystalline films showed a decrease from 75.8 to 62.9 nm with the increase of the annealing temperature from 200 to 250 °C. The Raman analysis showed several peaks corresponding to the stibnite Sb2S3 phase. The surface morphology of the films was examined by atomic force microscopy (AFM). The surface roughness decreases slightly as the transformation from the amorphous to the crystalline phase occurs. The chemical compositions of Sb2S3 films were analyzed by energy dispersive X-ray spectroscopy (EDS), revealing that all films were Sb-rich. The optical parameters were estimated from the transmittance and reflectance spectra recorded by UV-Vis spectroscopy. A reduction in the direct band gap energy from 2.12 to 1.70 eV with the increase of annealing temperature was also found.

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Analysis of different vacuum annealing levels for ZnSe thin films as potential buffer layer for solar cells

Chasta

Himanshu

Patel

et al. 2021

J Mater Sci: Mater Electron

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Vacuum annealing level evolution of titania thin films: Functionality as potential optical window in solar cells

Cited by 14 publications

References 16 publications

The Anodization of Thin Titania Layers as a Facile Process towards Semitransparent and Ordered Electrode Material

The Anodization of Thin Titania Layers as a Facile Process towards Semitransparent and Ordered Electrode Material

Effect of vacuum annealing on the properties of one step thermally evaporated Sb₂S₃thin films for photovoltaic applications

Analysis of different vacuum annealing levels for ZnSe thin films as potential buffer layer for solar cells

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Vacuum annealing level evolution of titania thin films: Functionality as potential optical window in solar cells

Cited by 14 publications

References 16 publications

The Anodization of Thin Titania Layers as a Facile Process towards Semitransparent and Ordered Electrode Material

The Anodization of Thin Titania Layers as a Facile Process towards Semitransparent and Ordered Electrode Material

Effect of vacuum annealing on the properties of one step thermally evaporated Sb2S3thin films for photovoltaic applications

Analysis of different vacuum annealing levels for ZnSe thin films as potential buffer layer for solar cells

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Effect of vacuum annealing on the properties of one step thermally evaporated Sb₂S₃thin films for photovoltaic applications