Relation between solution chemistry and morphology of SnO2-based thin films deposited by a pyrosol process

Smith, Agnès; Laurent, J.; Smith, David Stanley; Bonnet, Jean-Pierre; Rodrı́guez-Clemente, R.

doi:10.1016/0040-6090(95)06648-9

Cited by 119 publications

(58 citation statements)

References 26 publications

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“…), plays a key role in the design of the deposited material properties. [11] Various precursors have been reported to be used for SnO 2 synthesis, and the unanimous view is that the precursor nature and its interaction with solvent determine the particle shape and size -the most important parameters for gas-sensor applications. [12] To the best of our knowledge, studies reporting AACVD synthesis of SnO 2 materials for gas sensors are scarce in the literature, only a few being found.…”

Section: Introductionmentioning

confidence: 99%

Aerosol‐Assisted CVD of SnO₂ Thin Films for Gas‐Sensor Applications

Stoycheva

Vallejos

Pavelko

et al. 2011

Chemical Vapor Deposition

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In this article is a report of SnO2 deposition by aerosol‐assisted (AA)CVD from tin complexes, [Sn(18‐Cr‐6)Cl4] and [Sn(H2O)2Cl4](18‐Cr‐6). The structure and properties of the precursors, used to synthesize SnO2 layers by AACVD for the first time, are characterized with the help of X‐ray diffraction (XRD), infrared (IR), and thermogravimetric analysis (TGA). Each complex is deposited by AACVD at 250, 400, and 500 °C in a flow of N2. The resulting films are studied by XRD and atomic force microscopy (AFM). Gas‐sensing properties of the deposited layers are tested to 10 ppm NO2 in air. The maximum sensor response to the analyte is measured at 300 °C.

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Section: Introductionmentioning

confidence: 99%

Aerosol‐Assisted CVD of SnO₂ Thin Films for Gas‐Sensor Applications

Stoycheva

Vallejos

Pavelko

et al. 2011

Chemical Vapor Deposition

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“…The prominent (200) peak in S1-S3 and the emergence of a stronger (110) peak in S4-S6 is mostly likely related to the concentration of the precursor materials used. It is known that the films with a preferred orientation of (200) require high halogen rich gases [20,21]. Under the growth conditions, the S1-S3 having a higher concentration of TFAA solution will result in more gaseous polar molecules and will adsorb on polar F-(101) surfaces.…”

Section: Resultsmentioning

confidence: 99%

Translation Effects in Fluorine Doped Tin Oxide Thin Film Properties by Atmospheric Pressure Chemical Vapour Deposition

2016

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Abstract:In this work, the impact of translation rates in fluorine doped tin oxide (FTO) thin films using atmospheric pressure chemical vapour deposition (APCVD) were studied. We demonstrated that by adjusting the translation speeds of the susceptor, the growth rates of the FTO films varied and hence many of the film properties were modified. X-ray powder diffraction showed an increased preferred orientation along the (200) plane at higher translation rates, although with no actual change in the particle sizes. A reduction in dopant level resulted in decreased particle sizes and a much greater degree of (200) preferred orientation. For low dopant concentration levels, atomic force microscope (AFM) studies showed a reduction in roughness (and lower optical haze) with increased translation rate and decreased growth rates. Electrical measurements concluded that the resistivity, carrier concentration, and mobility of films were dependent on the level of fluorine dopant, the translation rate and hence the growth rates of the deposited films.

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“…This value shows that the film is highly transparent. High transmittance is significant for DSSC in allowing the movement of incident sunlight down to the active region of DSSC photoanode [20][21][22][23]. (2) where C is a constant, E g band gap energy, hν is the photon energy [24].…”

Section: Fto's Optical and Electrical Propertiesmentioning

confidence: 99%

Efficiency of FTO/Graphene-based Dye-Sensitized Solar Cell

Awodugba¹,

Yusuf²

2017

Preprint

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The focus of this research is to improve the performance of dye-sensitized solar cells (DSSC) through the adoption of high-quality FTO thin films and incorporation of graphene with DSSC photoanode to enhance its electrical transport. In this research, nanostructured FTO films were first grown with homemade Streaming Process for Electroless and Electrochemical Deposition technology (SPEED) using Tin (II) chloride dihydrate and ammonium fluoride and other chemical formulations. The FTO structural property was measured by X-ray diffraction (XRD); the films' optical property was determined with transmittance spectra to curve over the wavelength range of 200-1000 nm measured with a spectrophotometer while scanning electron microscope (SEM) was used to determine the morphological properties of the samples. The electrical transport was evaluated by Hall Effect measurements at room temperature with a four-point probe. The FTO samples with the best structural, optical and electrical properties were employed as electrodes and counter electrodes of DSSC along with titanium dioxide. Thus, effect of graphene on the efficiency of DSSC was investigated. It was shown that a graphene-based DSSC showed an efficiency of 7.98% which is slightly higher than that of DSSC prototype without graphene (6.02%). The higher efficiency obtained with graphene can be credited to the ultrahigh surface area and thermal conductivity of graphene which tend to enhance the charge mobility and photovoltaic performance of DSSC. More research is however required to determine the exact amount of graphene that could achieve optimal DSSC performance. Further studies will also offer an adequate clarification for starting point of the better incorporation of graphene in DSSCs.

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Relation between solution chemistry and morphology of SnO2-based thin films deposited by a pyrosol process

Cited by 119 publications

References 26 publications

Aerosol‐Assisted CVD of SnO₂ Thin Films for Gas‐Sensor Applications

Aerosol‐Assisted CVD of SnO₂ Thin Films for Gas‐Sensor Applications

Translation Effects in Fluorine Doped Tin Oxide Thin Film Properties by Atmospheric Pressure Chemical Vapour Deposition

Efficiency of FTO/Graphene-based Dye-Sensitized Solar Cell

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Relation between solution chemistry and morphology of SnO2-based thin films deposited by a pyrosol process

Cited by 119 publications

References 26 publications

Aerosol‐Assisted CVD of SnO2 Thin Films for Gas‐Sensor Applications

Aerosol‐Assisted CVD of SnO2 Thin Films for Gas‐Sensor Applications

Translation Effects in Fluorine Doped Tin Oxide Thin Film Properties by Atmospheric Pressure Chemical Vapour Deposition

Efficiency of FTO/Graphene-based Dye-Sensitized Solar Cell

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Product

Resources

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Aerosol‐Assisted CVD of SnO₂ Thin Films for Gas‐Sensor Applications

Aerosol‐Assisted CVD of SnO₂ Thin Films for Gas‐Sensor Applications