CuAlS 2 thin films – Dip coating deposition and characterization

Chaki, Sunil H.; Mahato, Kanchan S.; Malek, Tasmira J.; Deshpande, M. P.

doi:10.1016/j.jsamd.2017.04.002

Cited by 31 publications

(11 citation statements)

References 30 publications

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“…This behavior due to the film with high thickness has more carrier concentration, and the verse versa. Values of carrier concentration were varied in the range (3.49×1016 to 1.46×1017 cm-3) which are a good agreement and greater than found by Chaki et al ( 1016 cm-3) (Chaki et al, 2017). The mobility of charge carriers (μ) for prepared films increases with increasing the molar concentration from 1 to 1.5 M, and after that it decreases with increasing the molar concentration from 1.5 to 2 M. The maximumvalue of mobilitywas found at molar concentration 1.5 M, but decreases at molar concentration 2 M.the behavior of mobility is inversely compared with that observed for carrier concentrations which are shown in Fig.…”

Section: Electrical Properties Analysissupporting

confidence: 79%

“…The chalcopyrite semiconductor that belongs to I-III-VI compound has substantial interest in recent years (Naveena & Bose, 2019). The CuAlS2 is the one of the family of the ternary chalcopyrite having direct optical band gap of 3.5 eV, and this value highest among those of all the chalcopyrite compound semiconductors, also having major advantage such as low coast, non-toxic and earth abundant, which making it an interesting material for many technological applications, in solar cells, photovoltaic, light emitting devices in blue region of spectrum, as window layers of solar cells (Naveena & Bose, 2019) (Chaki, Mahato, Malek, & Deshpande, 2017), as oxygen gas sensor (Abaab, Bouazzi, & Rezig, 2000), and as UV detectors (Perng, Kao, & Chang, 2014). There are many techniques used to prepare ternary CuAlS2 thin films, such as chemical spray pyrolysis (Caglar, Ilican, & Caglar, 2008), thermal evaporation (Abaab et al, 2000), sulfurization of metallic precursors in a vacuum (Bhandari, Hashimoto, & Ito, 2004), spark plasma sintering (Liu, Wang, Huang, Chen, & Wang, 2007), direct polyol methods (Yue, Wang, Wang, Wang, & Peng, 2008), wet chemical method (Harichandran & Lalla, 2008), simple colloidal route (Poulose et al, 2012), chemical vapour transport (CVT) technique (Chaki, Mahato, & Deshpande, 2014), hydrothermal method(HT) (Sugan, Baskar, & Dhanasekaran, 2015), metal organic chemical vapour deposition (MOCVD) (Damisa, Olofinjana, Ebomwonyi, Bakare, & Azi, 2017), and atomic layer deposition (Schneider et al, 2018), and chemical bath deposition technique (CBD).…”

Section: Introductionmentioning

confidence: 99%

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Effect of Molarconcentration of Precursorson the Structural, Opticaland Electrical Properties of Cuals2 Thin Films Prepared by Chemical Bath Deposition Technique

Taher¹,

Ahmad²

2021

MINAR Journal

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CuAlS2 thin films have been prepared on glass substrates by Chemical bath deposition (CBD) technique at a substrate temperature (Ts) 75C, pH value 10.5.The Effect of three different molar concentration (0.05, 0.025, 0.1), (0.075, 0.0375, 0.15), and (0.1, 0.05, 0.2) M of precursors of (CuSO4.5H2O, Al2(SO4)3.16H2O, and (NH2)2CS), respectively on the structural, optical and electrical properties of deposit thin films was studied. The X-ray diffraction (XRD) patterns showed that the films have an amorphous structure with simple enhancement in the structure of the films with the higher molar concentration. Field emission scanning electron microscopy (FESEM) analysis of thin films showed that the deposited films were a good surface morphology, homogenous and uniform spherical nanoparticles over the substrate surface with very little agglomerated particles with average grain size in the range (45 to 72 nm) increase with increasing molar concentration of precursors. Atomic force microscopy (AFM) showed the topography of deposited films has nanoparticles with structures like conical and lobes shape, with the average grain sizes, root mean square (rms) roughness, and surface roughness increase with increasing molar concentration of precursors. The optical analysis by UV-Vis Spectrophotometer showed high absorption in the ultraviolet region, with absorption edge and direct energy gaps (3.5 to 4eV) variedat different molar concentrations of precursors. The electrical results from Hall effect measurements showed that the values of resistivity, conductivity, mobility, and carrier concentration were varied in range (0.046 to 0.594ohm.cm), (1.86 to 21.7(ohm.cm)-1), (301to 1510 cm2/V.S), and (3.29×1016 to 1.46×1017 cm-3), respectively .Also,n-type conductivity was investigated for all prepared film sat different molar concentration of precursors. The obtained results of the prepared CuAlS2 thin films can be suitable in many optoelectronics applications.

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Section: Electrical Properties Analysissupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Effect of Molarconcentration of Precursorson the Structural, Opticaland Electrical Properties of Cuals2 Thin Films Prepared by Chemical Bath Deposition Technique

Taher¹,

Ahmad²

2021

MINAR Journal

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“…However, when FHBP was applied to Ti in association with a PDA thin film, the functionalised metal was superior to FHBP-Ti in supporting 1,25D-induced osteoblast maturation. The approach we have taken to biologically functionalise Ti is very simple; a facile, dip-coating approach for (bio)material modifications is particularly attractive, since there is no requirement for specialist equipment and the coating process is not constrained to a specific feature [44][45][46]. These are important considerations in realising the fabrication of new implantable Ti technologies, which could now extend to hybrid PDA-bioactive LPA analogue coatings.…”

Section: Discussionmentioning

confidence: 99%

Polydopamine-Lysophosphatidate-Functionalised Titanium: A Novel Hybrid Surface Finish for Bone Regenerative Applications

et al. 2020

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Aseptic loosening of total joint replacements (TJRs) continues to be the main cause of implant failures. The socioeconomic impact of surgical revisions is hugely significant; in the United Kingdom alone, it is estimated that £135m is spent annually on revision arthroplasties. Enhancing the longevity of titanium implants will help reduce the incidence and overall cost of failed devices. In realising the development of a superior titanium (Ti) technology, we took inspiration from the growing interest in reactive polydopamine thin films for biomaterial surface functionalisations. Adopting a “one-pot” approach, we exposed medical-grade titanium to a mildly alkaline solution of dopamine hydrochloride (DHC) supplemented with (3S)1-fluoro-3-hydroxy-4-(oleoyloxy)butyl-1-phosphonate (FHBP), a phosphatase-resistant analogue of lysophosphatidic acid (LPA). Importantly, LPA and selected LPA analogues like FHBP synergistically cooperate with calcitriol to promote human osteoblast formation and maturation. Herein, we provide evidence that simply immersing Ti in aqueous solutions of DHC-FHBP afforded a surface that was superior to FHBP-Ti at enhancing osteoblast maturation. The facile step we have taken to modify Ti and the biological performance of the final surface finish are appealing properties that may attract the attention of implant manufacturers in the future.

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“…The finding that the Ti6Al4V -bound FHBP could withstand insertion into a mock bone substitute, resist irrigation and withstand γ-irradiation are important outcomes in overall product development. The approach we have taken to biologically functionalise titanium is very simple; a facile, dip coating approach for (bio)material modifications is particularly attractive since there is no requirement for specialist equipment, and the coating process is not constrained to a specific feature [ [43] , [44] , [45] ]. These are important considerations in realising the fabrication of new implantable Ti6Al4V technologies which could now extend to bioactive phosphatase-resistant LPA analogue coatings.…”

Section: Discussionmentioning

confidence: 99%

Development of a facile fluorophosphonate-functionalised titanium surface for potential orthopaedic applications

Shiel

Ayre

Blom

et al. 2020

Journal of Orthopaedic Translation

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s Background Aseptic loosening of total joint replacements (TJRs) continues to be the main cause of implant failures. The socioeconomic impact of surgical revisions is hugely significant; in the United Kingdom alone, it is estimated that £137 m is spent annually on revision arthroplasties. Enhancing the longevity of titanium implants will help reduce the incidence and overall cost of failed devices. Methods In realising the development of a superior titanium technology, we exploited the natural affinity of titanium for phosphonic acids and developed a facile means of coating the metal with (3S)1-fluoro-3-hydroxy-4-(oleoyloxy)butyl-1-phosphonate (FHBP), a phosphatase-resistant analogue of lysophosphatidic acid (LPA). Importantly LPA and selected LPA analogues like FHBP synergistically cooperate with calcitriol to promote human osteoblast formation and maturation. Results Herein, we provide evidence that simply immersing titanium in aqueous solutions of FHBP afforded a surface that was superior to unmodified metal at enhancing osteoblast maturation. Importantly, FHBP-functionalised titanium remained stable to 2 years of ambient storage, resisted ∼35 kGy of gamma irradiation and survived implantation into a bone substitute (Sawbone™) and irrigation. Conclusion The facile step we have taken to modify titanium and the robustness of the final surface finish are appealing properties that are likely to attract the attention of implant manufacturers in the future. The translational potential of this article We have generated a functionalised titanium (Ti) surface by simply immersing Ti in aqueous solutions of a bioactive lipid. As a facile procedure it will have greater appeal to implant manufacturers compared to onerous and costly developmental processes.

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CuAlS 2 thin films – Dip coating deposition and characterization

Cited by 31 publications

References 30 publications

Effect of Molarconcentration of Precursorson the Structural, Opticaland Electrical Properties of Cuals2 Thin Films Prepared by Chemical Bath Deposition Technique

Effect of Molarconcentration of Precursorson the Structural, Opticaland Electrical Properties of Cuals2 Thin Films Prepared by Chemical Bath Deposition Technique

Polydopamine-Lysophosphatidate-Functionalised Titanium: A Novel Hybrid Surface Finish for Bone Regenerative Applications

Development of a facile fluorophosphonate-functionalised titanium surface for potential orthopaedic applications

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