Optical properties tuning by sodium and magnesium co-doping in ZnO thin films for optoelectronic applications

Ghosh, Koushik; Gupta, Prerna; Pandey, R. K.

doi:10.1016/j.matpr.2020.01.500

Cited by 6 publications

(3 citation statements)

References 28 publications

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“…Zinc selenide (ZnSe) is a polycrystalline material that occurs in cubic (fcc) and hexagonal (hcp) structures . It is an important semiconductor material of groups II–VI and exhibits a 2.7 eV direct energy band gap for bulk, and its Bohr excitation diameter is 9 nm . The NSs of ZnSe have received a lot of attention because of their unique physical, electrical, chemical, mechanical, catalytic, optical, and antimicrobial properties as compared to the bulk of the same chemical composition. , It is widely applicable in optoelectronic devices, solar cells, photocatalytic activation, and light-emitting diodes (LEDs), as photoluminescence (PL) material, and in antimicrobial activities …”

Section: Introductionmentioning

confidence: 99%

Enhanced Antibacterial and Photoluminescence Activities of ZnSe Nanostructures

et al. 2023

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Microorganisms create various health issues; semiconductor nanostructures have raised interest because of antimicrobial properties for suppressing microbial growth. Herein, we report the synthesis of ZnSe nanostructures (NSs) using a green coprecipitation method, and the assynthesized samples were annealed at 100, 150, and 200 °C temperatures. The synthesized samples were analyzed for structural, morphological, optical, and antibacterial properties. The growth of nanorods was confirmed by TEM micrographs and that of nanoparticles by FESEM and TEM micrographs. The cubic zinc blender phase of samples was confirmed by XRD. The high-intensity electron−phonon (e−ph) interactions and LO modes were confirmed by the Raman spectra. The UV−visible absorption spectra predicted the blue shift in optical band gaps of ZnSe NSs from their bulk counterparts. The PL spectra and associated CIE diagram indicated that the as-synthesized and annealed NSs produce blue color. The investigated antimicrobial activity against Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus implies the superior biological activity of the as-synthesized and annealed samples at 200 °C. The annealing enhances photoluminescence and antimicrobial activities of ZnSe NSs. The enhanced luminscence properties of ZnSe NSs make them suitable for preparing more efficient blue LEDs and lasers for medical applications. The as-synthesized and annealed ZnSe NSs are found effective against the growth of microorganisms, and sustaining this tendency for 1 week provides a strong basis for the development of new drugs against bacterial infections for supporting the pharmaceutical industry.

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Section: Introductionmentioning

confidence: 99%

Enhanced Antibacterial and Photoluminescence Activities of ZnSe Nanostructures

et al. 2023

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“…The doping of transition elements to the ZnO lattice has been used to improve the optical, [28][29][30][31][32] magnetic, electrical, 21,[33][34][35] and photocatalytic properties of ZnO nanostructures. 1,36 The photocatalytic efficiency increases with the diffusion of these elements in the ZnO.…”

Section: Introductionmentioning

confidence: 99%

Photoluminescent and photocatalytic properties of Cu²⁺ and Mg²⁺‐doped ZnO nanoparticles obtained by a facile sonochemical method

Bezerra Neta,

Andrade Neto,

Silva

et al. 2023

Int J Ceramic Engine & Sci

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Pure ZnO particles, doped and co‐doped with Cu2+ and Mg2+ ions were obtained by the simple sonochemical method. The wurtzite hexagonal structure was confirmed by X‐ray diffraction (XRD) patterns. The images obtained by field emission scanning electron microscopy (FE‐SEM) showed irregular and more agglomerated particles with the increase of Cu2+ and Mg2+ ions concentration in the ZnO lattice, with the average diameter of particles in the range of 57.23‐170.77 nm. The photocatalytic activity was investigated by decolorizing the methylene blue (MB) dye under UVC light irradiation which indicates that 1% Mg‐doped ZnO particles have better photocatalytic activity than the other samples, and presented the highest kinetic constant value. The co‐doped samples showed a reduced global surface area which did not favor the good photocatalytic performance. The sacrificial agents showed that OH· radicals are the main species involved in the photocatalytic activity of this system and defects generated in the ZnO lattice promoted photoluminescent emission in the red and green regions.This article is protected by copyright. All rights reserved

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“…Oxides are a vital component of PV cells due to the various applications of oxides in PV cells. New oxide materials are being introduced for use in PV where numerous transition metal oxide nanostructures with various morphologies have been synthesized using numerous techniques to achieve the requirements of the desired application [6][7][8][9]. Several highly transparent and high refractive index materials have been investigated as ARC in Si solar cells such as ZnS [10], CeO [11] TiO 2 [12] Ta 2 O 5 [13], ZnO [14] and ZrO 2 [15] either in a single layer or multiple layer coating.…”

Section: Introductionmentioning

confidence: 99%

Optical Properties of Anti-Reflective Coatings on P-N Silicon and their Response to Gamma-Irradiation

AMA

2022

JOJMS

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The dc-pulsed plasma magnetron sputtering was used for depositing TiO2, ZrO2, and Ti50-Zr50 anti-reflection coating with thickness of 40 nm on p-n junction wafers and glass substrates. Furthermore, the antireflective properties of silicon nitride deposited elsewhere using plasma enhanced chemical vapor deposition (PECVD) were compared with those of metal oxide films. X-ray structural analysis reveals amorphous nature of the prepared films. The optical transmittance and reflectance measurements were investigated at room temperature in the wavelength range from 250 to 2500 nm. At long wavelengths, ZrO2 has a slightly higher transparency than that of TiO2 and Ti50-Zr50 oxide. On the other hand, the transparency at short wavelengths has different behavior. At about 300nm, a sharp decrease in the transparency of the three coatings was found. On the other hand, reflectance measurements show a decrease in reflectivity at 600 nm for ZrO2 and Ti50-Zr50 oxide as compared toTiO2. Samples irradiated with gamma rays at a dose of 5 kGray show different behavior in reflectivity due to displacement damage in Si-based cells.

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Optical properties tuning by sodium and magnesium co-doping in ZnO thin films for optoelectronic applications

Cited by 6 publications

References 28 publications

Enhanced Antibacterial and Photoluminescence Activities of ZnSe Nanostructures

Enhanced Antibacterial and Photoluminescence Activities of ZnSe Nanostructures

Photoluminescent and photocatalytic properties of Cu²⁺ and Mg²⁺‐doped ZnO nanoparticles obtained by a facile sonochemical method

Optical Properties of Anti-Reflective Coatings on P-N Silicon and their Response to Gamma-Irradiation

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Optical properties tuning by sodium and magnesium co-doping in ZnO thin films for optoelectronic applications

Cited by 6 publications

References 28 publications

Enhanced Antibacterial and Photoluminescence Activities of ZnSe Nanostructures

Enhanced Antibacterial and Photoluminescence Activities of ZnSe Nanostructures

Photoluminescent and photocatalytic properties of Cu2+ and Mg2+‐doped ZnO nanoparticles obtained by a facile sonochemical method

Optical Properties of Anti-Reflective Coatings on P-N Silicon and their Response to Gamma-Irradiation

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Photoluminescent and photocatalytic properties of Cu²⁺ and Mg²⁺‐doped ZnO nanoparticles obtained by a facile sonochemical method