Suited growth parameters inducing type of conductivity conversions on chemical spray pyrolysis synthesized SnS thin films

Andrade‐Arvizu, Jacob; García-Sánchez, M.F.; Courel, Maykel; Pulgarín-Agudelo, F.A.; Santiago-Jaimes, E.; Valencia-Resendiz, E.; Arce‐Plaza, Antonio; Vigil‐Galán, O.

doi:10.1016/j.jaap.2016.08.016

Cited by 27 publications

(14 citation statements)

References 45 publications

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“…The differences in size could be related to the elongated shape and the preferential orientation of films. The preferential orientation is evaluated with the calculation of the texture coefficient using the formula [20,33,43] T C ðhklÞ ¼…”

Section: Resultsmentioning

confidence: 99%

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Visible Emission on Nanostructured CeO₂ Thin Films Obtained by Spray Pyrolysis

Sánchez

Rosas

García

et al. 2020

Physica Status Solidi (a)

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Herein, the influence of the flow rate, substrate temperature, and thermal annealing at 700 C on the optical and structural parameters of nanostructured ceria thin films prepared by ultrasonic spray pyrolysis is evaluated. The morphology, structure, and optical properties are studied by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy (XPS), and photoluminescence (PL). The spray conditions are optimized for obtaining smooth, dense, and homogeneous nanocrystalline films with grain sizes smaller than 20 nm. XPS demonstrates a high percentage (%40%) of Ce 3þ in the films, even in heat-treated films (%25%). The Ce 3þ concentration does not depend on the growth temperature. Intense peaks at 575 and 618 nm are observed in PL measurements. These peaks are not reported in pure ceria thin films, they are dependent on the growth parameters (director and carrier gas flow rates and substrate temperature), and they are associated with levels produced by oxygen defects in the films. Variations in the flow rate modify the optimal temperature and the kinetic reaction, which also modifies the preferential orientation and the defect distribution in the films.

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Section: Resultsmentioning

confidence: 99%

“…The average crystallite sizes ( D ) are estimated from XRD patterns for the most intense peaks, using the Scherrer formula corrected for the instrument contribution, as [ 20,33,43 ]

D = \frac{0.9 λ}{β \cos θ_{normalB}}

…”

Section: Resultsmentioning

confidence: 99%

Visible Emission on Nanostructured CeO₂ Thin Films Obtained by Spray Pyrolysis

Sánchez

Rosas

García

et al. 2020

Physica Status Solidi (a)

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“…The average crystallite sizes (D) were estimated from XRD patterns for the most intense peaks using the Scherrer formula 22 : …”

Section: Introductionmentioning

confidence: 99%

“…Here, λ is the wavelength of the incident beam, β is the intrinsic width at half maximum of the hkl line and Θ B is the Bragg diffraction angle. The preferential orientation can be evaluated by calculation of the texture coefficient (T C ) using the formula 22 : where is the measured relative intensity of a plane , is the standard intensity taken from the PDF data and N is the number of diffraction peaks. T C qualitatively evaluates the strength of the crystalline orientation along a certain (hkl) direction with respect to a randomly oriented PDF powder reference.…”

Section: Introductionmentioning

confidence: 99%

Strong texture tuning along different crystalline directions in glass-supported CeO2 thin films by ultrasonic spray pyrolysis

Zumeta-Dubé

Rangel

Roque

et al. 2021

Sci Rep

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The strong facet-dependent performance of glass-supported CeO2 thin films in different applications (catalysis, smart windows, etc.) has been the target of diverse fundamental and technological approaches. However, the design of accurate, cost-effective and scalable methods with the potential for large-area coverage that produce highly textured glass-supported CeO2 thin films remains a technological challenge. In the present work, it is demonstrated that under proper tuning conditions, the ultrasonic spray pyrolysis technique enables one to obtain glass-supported polycrystalline CeO2 films with noticeable texture along both the (100) and (111) directions, as well as with randomly oriented crystallites (no texture). The influence of flow rates, solution molarity, and substrate temperature on the texture and morphological characteristics, as well as optical absorption and Raman response of the deposited films, is evaluated. The obtained results are discussed on the basis of the combined dependence of the CeO2-exposed surfaces on the thermodynamic stability of the corresponding facets and the reaction kinetics, which modulate the crystallite growth direction.

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“…Tin sulfide (SnS) promises to be one of the most suitable inorganic, nontoxic, readily available material suitable for photovoltaic application in thin film state . The structural, optical and electrical properties of SnS thin films such as grain size and orientation, conductivity, band‐gap, etc. can be easily tuned by controlling the fabrication conditions.…”

Section: Introductionmentioning

confidence: 99%

Mitigating Reasons for the Poor Performance of n‐CdS/p‐SnS Solar Cells

Gupta

Kant²,

Palakkandy

2018

Global Challenges

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In the present work, indium tin oxide (ITO)/n‐CdS/p‐SnS/Au structured solar cells are fabricated with best conversion efficiency of 0.005%. A detailed investigation is made into the cause of the poor conversion efficiency and the cause is narrowed down to defects in p‐SnS which effect the junction and the neutral region of the cell. The junctions performance is quantified using the ideality factor which is found to be related to the band misalignment. The paper also investigates into literature and discusses efforts made to overcome the problems with this structure.

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Suited growth parameters inducing type of conductivity conversions on chemical spray pyrolysis synthesized SnS thin films

Cited by 27 publications

References 45 publications

Visible Emission on Nanostructured CeO₂ Thin Films Obtained by Spray Pyrolysis

Visible Emission on Nanostructured CeO₂ Thin Films Obtained by Spray Pyrolysis

Strong texture tuning along different crystalline directions in glass-supported CeO2 thin films by ultrasonic spray pyrolysis

Mitigating Reasons for the Poor Performance of n‐CdS/p‐SnS Solar Cells

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Suited growth parameters inducing type of conductivity conversions on chemical spray pyrolysis synthesized SnS thin films

Cited by 27 publications

References 45 publications

Visible Emission on Nanostructured CeO2 Thin Films Obtained by Spray Pyrolysis

Visible Emission on Nanostructured CeO2 Thin Films Obtained by Spray Pyrolysis

Strong texture tuning along different crystalline directions in glass-supported CeO2 thin films by ultrasonic spray pyrolysis

Mitigating Reasons for the Poor Performance of n‐CdS/p‐SnS Solar Cells

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Product

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Visible Emission on Nanostructured CeO₂ Thin Films Obtained by Spray Pyrolysis

Visible Emission on Nanostructured CeO₂ Thin Films Obtained by Spray Pyrolysis