Influence of Te replacement by Bi in In10Se70Te20-xBix films and its structural, optical, morphological, surface wettability and thermal behaviors for optoelectronic applications

Giri, Sasmita; Priyadarshini, P.; Alagarasan, D.; Ganesan, R.; Naik, R.

doi:10.1016/j.optmat.2023.114522

Cited by 4 publications

(2 citation statements)

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“…The quantity Δ n (change in refractive index) originates from the nonlinear response as given by Δ n = n 2 | E | 2 , where ‘ n 2 ’ as nonlinear refractive index and “ E ” as the applied electric field. The n 2 for the as-grown and annealed films were determined through Ticha and Tichy and Miller’s formula, , n 2 = 12 π χ false( 3 false) n o , and are tabulated in Table . It is increased with annealing because of the decrease in defect states by annealing .…”

Section: Resultsmentioning

confidence: 99%

“…Different surfaces have different applications. For self-cleaning surfaces, dust, and water-protecting coats on electronics, for the removal of petroleum from aqueous solutions, the hydrophobic surface is used, 38 whereas hydrophilic surfaces are useful for biomedical, antifogging applications, filtration, and heat pipes. 39 Tuning the hydrophilicity is essential for the better performance of the films, which can be obtained by thermal annealing also.…”

Section: Surface Wettability Study By Contact Angle Measurementmentioning

confidence: 99%

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Enhanced Photoresponse and Surface Wettability of Bi₂Se₃ Film with Annealing at Different Temperatures for Optoelectronic Applications

Das,

Dandasena,

Alagarasan

et al. 2024

ACS Appl. Opt. Mater.

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The current investigation focuses on Bi2Se3 films grown via a thermal evaporation process and subsequently annealed at temperatures of 100 °C, 150 °C, 200 °C, and 250 °C for 2 h. The structural study of the Bi2Se3 annealed film confirmed the crystalline nature of the material, and crystallite sizes ranged between 14 and 24 nm. Annealing induced enhanced porosity, which was observed through surface morphology analysis. Optical studies revealed decreased transmission ability and increased absorption capability with postannealing. The direct optical band gap reduced from 1.269 to 1.144 eV at 250 °C due to increased localized states within the gap. Annealing also led to an enhancement in the extinction coefficient and optical density, alongside a reduction in skin depth. The material’s refractive index gradually enhanced with the increase in the annealing temperature. The refractive index of the material gradually increased with higher annealing temperatures. Additionally, the third-order susceptibility rose from 4.304 × 10–11 to 5.661 × 10–11 esu, resulting in an increase in the nonlinear refractive index from 5.152 × 10–10 to 6.575 × 10–10 esu, respectively. Moreover, annealing increased the hydrophobicity of the films, rendering them as self-cleaning materials. The surface energies of the materials lie between 14.05 and 4.49 mN/m. The augmented photocurrent postannealing indicates potential applications in various photodetector sectors. These findings, which highlight optical and structural enhancements, underscore the suitability of these films for optoelectronic devices.

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Section: Resultsmentioning

confidence: 99%

Section: Surface Wettability Study By Contact Angle Measurementmentioning

confidence: 99%

Enhanced Photoresponse and Surface Wettability of Bi₂Se₃ Film with Annealing at Different Temperatures for Optoelectronic Applications

Das,

Dandasena,

Alagarasan

et al. 2024

ACS Appl. Opt. Mater.

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Exploring the optical, structural, and surface wettability of thermally evaporated Ag25S35Se40 thin films by annealing for optoelectronic applications

Mohanty,

Das,

Kumar

et al. 2025

Physica B: Condensed Matter

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Tuning Hydrophilicity and Photoresponse by Interfacial Ag Diffusion in the Sb₂S₃ Layer for Optoelectronic Applications: An Experimental and Computational Study

Kumar,

Kanungo,

Pradhan

et al. 2024

J. Phys. Chem. C

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Antimony sulfide (Sb2S3) from group III2–VI3 is a very capable semiconducting candidate for tandem solar cells owing to its suitable optoelectronic properties. The doping of Ag tailors the optoelectronic and surface properties for different applications. In the current study, Ag/Sb2S3 bilayer films were annealed at different temperatures. The cross-sectional view by FESEM inferred the bilayer and the interdiffusion of Ag into the Sb2S3 layer. The porosity in the film’s surface decreased upon annealing, as seen from the surface morphology. The confirmation of the elements was inferred from the EDS data, while the amorphous structure was verified from X-ray diffraction analysis. The effect of annealing on the different optical parameters was determined from the UV–vis-NIR spectra and related calculations. The optical bandgap, extinction coefficient, refractive index, and dielectric parameters changed with the intermixing of Ag into the Sb2S3 layer upon annealing. The χ(3) value changed from 4.560 × 10–18 to 2.086 × 10–18 m2/V2, and the nonlinear refractive index varied from 4.324 × 10–17 to 2.165 × 10–17 m2/V2 upon annealing. The hydrophilicity increased with annealing, as found from the contact angle measurement. The change in photoconductivity upon annealing is very useful for visible light photodetection. The computational study supported the changes in the films upon annealing.

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Influence of Te replacement by Bi in In10Se70Te20-xBix films and its structural, optical, morphological, surface wettability and thermal behaviors for optoelectronic applications

Cited by 4 publications

References 95 publications

Enhanced Photoresponse and Surface Wettability of Bi₂Se₃ Film with Annealing at Different Temperatures for Optoelectronic Applications

Enhanced Photoresponse and Surface Wettability of Bi₂Se₃ Film with Annealing at Different Temperatures for Optoelectronic Applications

Exploring the optical, structural, and surface wettability of thermally evaporated Ag25S35Se40 thin films by annealing for optoelectronic applications

Tuning Hydrophilicity and Photoresponse by Interfacial Ag Diffusion in the Sb₂S₃ Layer for Optoelectronic Applications: An Experimental and Computational Study

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Influence of Te replacement by Bi in In10Se70Te20-xBix films and its structural, optical, morphological, surface wettability and thermal behaviors for optoelectronic applications

Cited by 4 publications

References 95 publications

Enhanced Photoresponse and Surface Wettability of Bi2Se3 Film with Annealing at Different Temperatures for Optoelectronic Applications

Enhanced Photoresponse and Surface Wettability of Bi2Se3 Film with Annealing at Different Temperatures for Optoelectronic Applications

Exploring the optical, structural, and surface wettability of thermally evaporated Ag25S35Se40 thin films by annealing for optoelectronic applications

Tuning Hydrophilicity and Photoresponse by Interfacial Ag Diffusion in the Sb2S3 Layer for Optoelectronic Applications: An Experimental and Computational Study

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Product

Resources

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Enhanced Photoresponse and Surface Wettability of Bi₂Se₃ Film with Annealing at Different Temperatures for Optoelectronic Applications

Enhanced Photoresponse and Surface Wettability of Bi₂Se₃ Film with Annealing at Different Temperatures for Optoelectronic Applications

Tuning Hydrophilicity and Photoresponse by Interfacial Ag Diffusion in the Sb₂S₃ Layer for Optoelectronic Applications: An Experimental and Computational Study