Laser—synthesised Ag<sub>2</sub>S nanoparticles in liquid: effect of laser fluence on structural and optical properties

Ismail, Raid A.; Ahmed, Duha S.; Rawdhan, Hanan A.

doi:10.1088/2053-1591/ab5348

Cited by 6 publications

(3 citation statements)

References 32 publications

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“…Thus, silver ions Ag + and sulfur ions S 2− are produced from silver target and thiourea solution, respectively. They form Ag 2 S NPs according to the following chemical reaction [ 21 ]:…”

Section: Resultsmentioning

confidence: 99%

High-responsivity hybrid α-Ag₂S/Si photodetector prepared by pulsed laser ablation in liquid

Ismail¹,

Rawdhan²,

Ahmed³

2020

Beilstein J. Nanotechnol.

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We report the synthesis of α-Ag2S nanoparticles (NPs) by one-step laser ablation of a silver target in aqueous solution of thiourea (Tu, CH4N2S) mixed with cationic cetyltrimethylammonium bromide (CTAB) as surfactant. The effect of the CTAB surfactant on the structural, morphological, optical, and elemental composition of Ag2S NPs was evaluated using X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and UV–vis spectroscopy. The optical absorption decreased and the optical energy gap of α-Ag2S increased from 1.5 to 2 eV after the CTAB surfactant was added to the Tu solution. XRD studies revealed that the synthesized Ag2S NPs were polycrystalline with a monoclinic structure and that crystallinity of the nanoparticles was improved after adding CTAB. Raman studies revealed the presence of peaks related to Ag–S bonds (Ag modes) and the longitudinal optical phonon 2LO mode. Scanning electron microscopy investigations confirmed the production of monodisperse Ag2S NPs when using the CTAB surfactant. The optoelectronic properties of α-Ag2S/p-Si photodetector, such as current–voltage characteristics and responsivity in the dark and under illumination, were also improved after using the CTAB surfactant. The responsivity of the photodetector increases from 0.64 to 1.85 A/W at 510 nm after adding CTAB. The energy band diagram of the α-Ag2S/p-Si photodetector under illumination was constructed. The fabricated photodetectors exhibited reasonable stability after three weeks of storage under ambient conditions with a responsivity of 70% of the initial value.

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Section: Resultsmentioning

confidence: 99%

High-responsivity hybrid α-Ag₂S/Si photodetector prepared by pulsed laser ablation in liquid

Ismail¹,

Rawdhan²,

Ahmed³

2020

Beilstein J. Nanotechnol.

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“…The peak at 420 cm −1 can be attributed to the second-order longitudinal optical phonon modes (2LO) in Ag 2 S. Apart from these, the peaks seen at 496, 715, 1260, 1380, and 1449 cm −1 in the Raman spectrum are related to the photodecomposition of Ag 2 S NPs. [50][51][52][53] The confocal Raman spectrum of NiMoO 4 displays high intensity peaks at 960, 913, 707, and 365 cm −1 , with a broad peak at 265 cm −1 . The very sharp bands at 960 and 913 cm −1 are attributed to the symmetric and asymmetric stretching modes of Mo-O bonds.…”

Section: Characterizationmentioning

confidence: 99%

A new sensing platform based on a ternary nanocomposite of graphitic carbon nitride–silver sulfide–nickel molybdate for quercetin determination

Valiyeva

Baş

Atacan

et al. 2023

Analyst

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“…1422 cm À1 , are related to the photodecomposition products of Ag 2 S, such as silver and sulfur oxides. 29,30 We assumed that Ag 2 S would react further with oxygen in air to form silver oxide (Ag 2 O). The existence of Ag 2 O is evidenced by the appearance of two peaks at 551 and 1074 cm À1 in Fig.…”

Section: Ramanmentioning

confidence: 99%

Investigation of photoelectric behaviors of silver sulfide particles in different surroundings

Dong

Peng

et al. 2022

RSC Adv.

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Laser—synthesised Ag₂S nanoparticles in liquid: effect of laser fluence on structural and optical properties

Cited by 6 publications

References 32 publications

High-responsivity hybrid α-Ag₂S/Si photodetector prepared by pulsed laser ablation in liquid

High-responsivity hybrid α-Ag₂S/Si photodetector prepared by pulsed laser ablation in liquid

A new sensing platform based on a ternary nanocomposite of graphitic carbon nitride–silver sulfide–nickel molybdate for quercetin determination

Investigation of photoelectric behaviors of silver sulfide particles in different surroundings

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Laser—synthesised Ag2S nanoparticles in liquid: effect of laser fluence on structural and optical properties

Cited by 6 publications

References 32 publications

High-responsivity hybrid α-Ag2S/Si photodetector prepared by pulsed laser ablation in liquid

High-responsivity hybrid α-Ag2S/Si photodetector prepared by pulsed laser ablation in liquid

A new sensing platform based on a ternary nanocomposite of graphitic carbon nitride–silver sulfide–nickel molybdate for quercetin determination

Investigation of photoelectric behaviors of silver sulfide particles in different surroundings

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Product

Resources

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Laser—synthesised Ag₂S nanoparticles in liquid: effect of laser fluence on structural and optical properties

High-responsivity hybrid α-Ag₂S/Si photodetector prepared by pulsed laser ablation in liquid

High-responsivity hybrid α-Ag₂S/Si photodetector prepared by pulsed laser ablation in liquid