Characterization of sprayed TiO2 on ITO substrates for solar cell applications

Arunachalam, A.; Dhanapandian, S.; Manoharan, C.; Sridhar, R.

doi:10.1016/j.saa.2015.05.014

Cited by 36 publications

(19 citation statements)

References 30 publications

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“…And also, all samples have a polycrystalline structure. This result is confirmed by some studies in the literature (Lee and Liu, 2002;Ramírez-Santos et al, 2012;Arunachalam et al, 2015;Tsega and Dejene, 2017;Biswas et al, 2018).…”

Section: Xrd Measurementssupporting

confidence: 86%

“…They found that; PEG added precursor solution films were crack-free and formed a porous structure after annealing at 500 °C (Ramírez-Santos et al, 2012). Arunachalam et al (2015) produced TiO2 thin film by spray pyrolysis method for solar cell applications. In their study, Titnyl Acetylacetonate (Tiacac) as a precursor solution of TiO2 was prepared in three different molarity (0.05 M, 0.10 M and 0.15 M).…”

Section: Introductionmentioning

confidence: 99%

“…In their study, Titnyl Acetylacetonate (Tiacac) as a precursor solution of TiO2 was prepared in three different molarity (0.05 M, 0.10 M and 0.15 M). They showed that the best crystallization was obtained at 0.10 M (Arunachalam et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Structural and Electro-optical Properties of Thin Films Fabricated for Different Deposition Times Using TiO2 Precursor Solutions with and without HCl by Ultrasonic Spray Pyrolysis

Bayram

Koç

Akyürekli

et al. 2021

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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In this report, two different TiO2 solutions with and without HCl were, firstly, prepared. Then, totally twelve number of thin film samples were obtained using these solutions for each of these two different group films by ultrasonic spray pyrolysis (USP). Of these twelve samples, each of the four was created at three different spray times (25, 50, 75 min), respectively, and they were annealed at 500 C. Structural, morphological, and electro-optical properties of TiO2 thin films were performed by Xray diffractometer (XRD), scanning electron microscope (SEM), atomic force microscope (AFM), and ultraviolet-visible spectrophotometer (UV-VIS). It was seen that the HCl addition improves the crystallinity of the thin film samples dramatically even though at low deposition temperatures. HCl addition causes densification on the surface of the films and these films also exhibited the best morphological and structural properties compared to thin films without HCl. Also, the bandgap values of all thin films prepared with and without HCl decreases from 3.40 to 3.21 eV and 3.29 to 3.15 eV, respectively. Increase in the thickness of films by the addition of HCl plays a vital role on the morphological, structural, and electro-optical properties of the samples.

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Section: Xrd Measurementssupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

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Comparison of Structural and Electro-optical Properties of Thin Films Fabricated for Different Deposition Times Using TiO2 Precursor Solutions with and without HCl by Ultrasonic Spray Pyrolysis

Bayram

Koç

Akyürekli

et al. 2021

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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“…There are a variety of substrates being used for the growth of TiO 2 nanorods, such as fluorine-doped tin oxide (FTO) (Lei et al, 2010), indium-doped tin oxide (ITO) (Arunachalam et al, 2015), magnesium oxide (MgO) (Garapon et al, 1996), silicon (Si) (Long et al, 2008) and glass (Li et al, 2009) etc. Each substrate has specific features: ITO offers very less resistance and is usually used as bottom electrode in the case of thin film samples (Utsumi et al, 1998).…”

Section: Selection Of Substratesmentioning

confidence: 99%

Formation and crystallization of TiO₂nanostructures on various surfaces

Jaffari¹,

Hussain²,

Iqbal³

et al. 2022

Acta Crystallogr B Struct Sci Cryst Eng Mater

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A comparative study of the synthesis of TiO2 nanorods on fluorine-doped tin oxide (FTO) glass, Si, SiO2, Si/Ta, Si/TiN, Si/TiN/Ti and Si/HFO2 substrates by hydrothermal reaction is presented. Detailed analysis on the growth of TiO2 on pre-annealed Si/TiN/Ti and HfO2 (HFO) surfaces is also given. For Si/TiN/Ti, a pre-annealing procedure led to the transformation of Ti to a TiO2 layer which acts as a seed for aligned growth of TiO2 nanorods. In contrast, Si/HFO does not provide a nucleation site for the formation of aligned nanorods. Various samples were prepared by varying the synthesis conditions, i.e. pre- and post-annealing temperatures and hydrothermal reaction time to figure out the optimum conditions which lead to unidirectional and highly aligned nanorods. X-ray diffraction, scanning electron microscopy, ultraviolet–visible spectroscopy and Raman spectroscopy were used to study structural, morphological and optical properties of synthesized samples. It is found that TiO2 nanorods exhibit a rutile phase on the Si/Ti/TiN and Si/HFO substrates, but highly oriented vertical growth of nanorods has been observed only on pre-annealed Si/TiN/Ti substrates. On the other hand, TiO2 nanorods form dandelion-like structures on Si/HFO substrates. Growth of vertically oriented TiO2 nanorods on Si/TiN/Ti is attributed to the TiO2 seed layer which forms after the process of pre-annealing of substrates at a suitable temperature. Variation in hydrothermal reaction time and post-annealing temperature brings further improvement in crystallinity and morphology of nanorods. This work shows that the pre-annealed Si/TiN/Ti substrate is the optimal choice to achieve vertically oriented, highly aligned TiO2 nanorods.

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“…There are several methods for the preparation of TiO 2 thin films, and the physicochemical properties strongly depend on the selected method [16][17][18][19]. Among all the techniques, the dip-coating sol-gel method is the most widely used because of its good homogeneity, simplicity, low cost, and low temperature during the process [20].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of TiO₂/SiO₂ Monoliths as Photocatalysts on Methanol Oxidation

Regalado-Raya

Romero

Avilés-García

et al. 2018

International Journal of Photoenergy

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Photocatalytic materials based on silica-titania (SiO2-TiO2) were synthesized by sol-gel and dip-coating method. TEOS and titanium butoxide were used as precursors of the silica-titania, respectively. A thin film with anatase phase was obtained on the surface of the support. The effect of variables as dispersion mechanism, immersion time, and number of treatment cycles were studied. The materials were characterized using X-ray diffraction, scanning electron microscopy, energy dispersion scanning, and N2 adsorption-desorption. The highest crystallinity of TiO2 on silica, high specific surface area in TiO2-SiO2 materials, and thin film formation were obtained by using a stirring plate and minimum immersion time. The so synthesized catalyst allowed the production of formaldehyde from the photocatalyzed methanol oxidation in a packed-bed reactor.

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Characterization of sprayed TiO2 on ITO substrates for solar cell applications

Cited by 36 publications

References 30 publications

Comparison of Structural and Electro-optical Properties of Thin Films Fabricated for Different Deposition Times Using TiO2 Precursor Solutions with and without HCl by Ultrasonic Spray Pyrolysis

Comparison of Structural and Electro-optical Properties of Thin Films Fabricated for Different Deposition Times Using TiO2 Precursor Solutions with and without HCl by Ultrasonic Spray Pyrolysis

Formation and crystallization of TiO₂nanostructures on various surfaces

Synthesis and Characterization of TiO₂/SiO₂ Monoliths as Photocatalysts on Methanol Oxidation

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Characterization of sprayed TiO2 on ITO substrates for solar cell applications

Cited by 36 publications

References 30 publications

Comparison of Structural and Electro-optical Properties of Thin Films Fabricated for Different Deposition Times Using TiO2 Precursor Solutions with and without HCl by Ultrasonic Spray Pyrolysis

Comparison of Structural and Electro-optical Properties of Thin Films Fabricated for Different Deposition Times Using TiO2 Precursor Solutions with and without HCl by Ultrasonic Spray Pyrolysis

Formation and crystallization of TiO2nanostructures on various surfaces

Synthesis and Characterization of TiO2/SiO2 Monoliths as Photocatalysts on Methanol Oxidation

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Product

Resources

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Formation and crystallization of TiO₂nanostructures on various surfaces

Synthesis and Characterization of TiO₂/SiO₂ Monoliths as Photocatalysts on Methanol Oxidation