Synthesis of nanocrystalline CdS thin film by SILAR and their characterization

Mukherjee, A.; Satpati, Biswarup; Bhattacharyya, S. R.; Ghosh, Rituparna; Mitra, Partha

doi:10.1016/j.physe.2014.08.013

Cited by 37 publications

(10 citation statements)

References 23 publications

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“…16,17 Owing to its wide bandgap, CdS is used as a window material for heterojunction solar cells to prevent recombination of photogenerated carriers, which improves solar cell efficiency. 18 CdS also has applications in light-emitting diodes, 19 nonlinear optics, heterogeneous photocatalysis, high-density magnetic information storage, [20][21][22] photodetectors, 23 and sensors, 24 as well as many ( other uses in the semiconductor industry. The properties of CdS nanoparticles are primarily driven by two factors: the increase in the surface-tovolume ratio, and drastic changes in the electronic structure of the material due to quantum-mechanical effects with decreasing particle size.…”

Section: Introductionmentioning

confidence: 99%

Preparation, Characterization, and Size Control of Chemically Synthesized CdS Nanoparticles Capped with Poly(ethylene glycol)

Seoudi

Allehyani

Said

et al. 2015

Journal of Elec Materi

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We prepared cadmium sulfide (CdS) nanoparticles of a specific size via chemical precipitation at room temperature and characterized them using high-resolution transmission electron microscopy, x-ray powder diffraction, ultraviolet-visible spectroscopy, and Fourier-transform infrared (FTIR) measurements. The results showed that the samples were grown with a cubic phase; the particle size could be changed from 2 nm to 4 nm by varying the molar ratios of the precursors (cadmium chloride and sodium sulfide) in the presence of poly(ethylene glycol) (PEG) as an effective capping agent. The optical bandgap of the synthesized nanoparticles was calculated and ranged from 2.73 eV to 2.92 eV depending on the particle size. A large blue-shift from the bulk bandgap (2.42 eV) was observed owing to the quantum size effect. Surface passivation and adsorption of PEG on the CdS nanoparticles was explained on the basis of FTIR measurements; two bands were observed at 476 cm À1 and 622 cm À1 , corresponding to cadmium and sulfide stretching vibrations. We conclude that particle size can be controlled by varying the molar ratios of the precursors. Owing to the PEG encapsulation, the as-prepared samples were extremely stable over time.

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Section: Introductionmentioning

confidence: 99%

Preparation, Characterization, and Size Control of Chemically Synthesized CdS Nanoparticles Capped with Poly(ethylene glycol)

Seoudi

Allehyani

Said

et al. 2015

Journal of Elec Materi

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“…After synthesis, the FTO substrate was taken out, rinsed extensively with deionized water and allowed to dry in ambient air. CdS nanoparticles with a diameter of 10 ± 2 nm were deposited on TiO 2 nanorods through a SILAR technique . The SILAR growth is a four‐step process involving subsequent immersion of a cleaned substrate in cationic and anionic solution along with rinsing solution at room temperature.…”

Section: Methodsmentioning

confidence: 99%

Frictional behaviors of three kinds of nanotextured surfaces

Jia

Che

et al. 2016

Surface & Interface Analysis

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Nanodot‐textured surface, nanorod‐textured surface and nanocomposite‐textured surface were prepared by the hydrothermal technique and successive ion layer absorption and reaction technique. The adhesion and friction properties of the three kinds of nanotextured surfaces were investigated using an atomic force microscope colloidal probe. Experimental results revealed that the nanorod‐textured surface and nanocomposite‐textured surface can significantly reduce adhesive and friction forces compared with a nanodot‐textured surface. The main reason for this phenomenon was that the nanorod and nanocomposite textures can reduce contact area between the sample surface and the colloidal probe. The effects of surface root mean square roughness, applied load and sliding velocity on the adhesion and friction behaviors of the nanotextured surfaces were investigated. The adhesive and friction forces of the nanotextured surfaces decreased with the increasing surface root mean square roughness. Compared with the nanocomposite‐textured surface, the nanorod‐textured surface has better adhesion and frictional performance. Copyright © 2016 John Wiley & Sons, Ltd.

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“…Проте, в останні роки цей інтерес помітно зріс за рахунок можливого застосування нанокристалів (НК) CdS в мікроелектроніці і оптоелектроніці, зокрема в світлодіодах, лазерах, датчиках, фотоелектричних пристроях, фотоелектричних перетворювачах, сонячних елементах, елементах пам'яті і т. д. [3][4][5][6][7].…”

Section: вступunclassified

Electronic Properties of Surface Vacancies in CdS Nanocrystals

Kupchak¹,

Serpak²,

Kapush³

et al. 2018

PCSS

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Structural and electronic characteristics of neutral and charged vacancies of cadmium and sulfur in CdS nanocrystals have been performed using the density functional method with hybrid exchange-correlation functional. Total and partial density of states, formation energies and the energies of thermodynamic transitions were calculated. Based on these theoretical findings and available experimental data, we can confirm the assumption, that the singly charged vacancies of cadmium are the centers of radiative recombination in such the structures.

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Synthesis of nanocrystalline CdS thin film by SILAR and their characterization

Cited by 37 publications

References 23 publications

Preparation, Characterization, and Size Control of Chemically Synthesized CdS Nanoparticles Capped with Poly(ethylene glycol)

Preparation, Characterization, and Size Control of Chemically Synthesized CdS Nanoparticles Capped with Poly(ethylene glycol)

Frictional behaviors of three kinds of nanotextured surfaces

Electronic Properties of Surface Vacancies in CdS Nanocrystals

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