Self-powered response in β-In2S3 thin films

A Salam, Jishad; M Anand, Akhil; Raj, Aruna; Nath R, Adithya; Jayakrishnan, R.

doi:10.1016/j.jsamd.2024.100671

Journal of Science: Advanced Materials and Devices

2024

DOI: 10.1016/j.jsamd.2024.100671

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Self-powered response in β-In2S3 thin films

Jishad A Salam,

Akhil M Anand,

Aruna Raj

et al.

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2024

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Cited by 2 publications

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Effect of different metallic doping elements on the physical properties of iron oxide thin films

Aboud,

Matar,

Mohaseb

2024

Phys. Scr.

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This study investigates the physical properties of pure and Co, Cr, Mn, and Ni-doped Fe2O3 thin films fabricated using spray pyrolysis techniques on glass substrates. The primary aim is to understand how doping influences the structural, optical, and dielectric properties of Fe2O3 thin films. The deposition parameters were kept constant for all samples, with a fixed dopant concentration of 3 weight percent (wt%). X-ray diffraction (XRD) analysis revealed a single diffraction peak indexed as (104), decreasing in crystallite size from 17.27 nm for the pure film to approximately 11.5 nm for all doped films. Field emission scanning electron microscopy (FE-SEM) images displayed non-homogeneous grain formation, characterized by an average grain size larger than the crystallite size, indicating agglomeration. The optical band gap value shifted from 2.54 eV for the pure film to higher values upon doping with various elements, signifying direct allowed transitions. Changes in refractive index dispersion with wavelength were observed based on the dopant type. The application of the Spitzer-Fan model revealed an increase in high-frequency dielectric constant upon doping compared to the pure film, varying across different dopants. Photoluminescence (PL) spectra recorded under excitation at 340 nm exhibited multiple emission peaks within the spectral range of 399 to 600 nm.

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Effect of different metallic doping elements on the physical properties of iron oxide thin films

Aboud,

Matar,

Mohaseb

2024

Phys. Scr.

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Effect of substrate temperature on In₂S₃ thin films using nebulizer spray pyrolysis method for photodetector applications

Sathish Kumar,

Valanarasu,

Rimal Isaac

et al. 2024

Phys. Scr.

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In this work, Indium Sulfide (In2S3) thin films were prepared using an economical nebulizer spray pyrolysis technique by various substrate temperatures from 250 °C to 375 °C in steps of 25 °C to evaluate their photo-sensing properties. X-ray diffraction patterns confirm the presence of In2S3 with tetragonal structure for all substrate temperatures. The densely packed small spherical grain-sized particles were observed for In2S3 films deposited at 350°C using FESEM analysis. The optical bandgap values were decreased from 31.5 eV to 2.3 eV, with an increment in coating temperatures from 250°C to 350°C. The high-intensity photoluminescence peak was observed at 480 nm for the film coated at 350°C due to a higher rate of electron-hole pair recombination. The photo sensing analysis revealed that the In2S3 thin films deposited at 350°C have a maximum responsivity (R) of 9.09 A/W, detectivity (D*) of 8.25 × 1010 Jones, and external quantum efficiency (EQE) of 21.2 %. Increasing the substrate temperature resulted in a significant enhancement of photo-sensing characteristics.

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Self-powered response in β-In2S3 thin films

Cited by 2 publications

References 71 publications

Effect of different metallic doping elements on the physical properties of iron oxide thin films

Effect of different metallic doping elements on the physical properties of iron oxide thin films

Effect of substrate temperature on In₂S₃ thin films using nebulizer spray pyrolysis method for photodetector applications

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Self-powered response in β-In2S3 thin films

Cited by 2 publications

References 71 publications

Effect of different metallic doping elements on the physical properties of iron oxide thin films

Effect of different metallic doping elements on the physical properties of iron oxide thin films

Effect of substrate temperature on In2S3 thin films using nebulizer spray pyrolysis method for photodetector applications

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Product

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Effect of substrate temperature on In₂S₃ thin films using nebulizer spray pyrolysis method for photodetector applications