Electrochemical Studies on the Cathodic Electrodeposition of n-type semiconductor CdS thin film from Thiosulfate Acidic Aqueous Solution

Aliyev, M Akif Shikhan; Elrouby, Mahmoud

doi:10.12785/ijtfst/020305

Cited by 14 publications

(4 citation statements)

References 21 publications

(20 reference statements)

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“…91 The small shoulder in the measured data at ∼ −0.9 V is likely associated with Cd 2+ reduction, while the anodic peak at ∼ −0.7 V may arise from either adsorbed H 2 , or S 2− oxidation. 94,95 When the sample is illuminated, the CV curve shows a higher cathodic current for voltages below −0.7 V, which suggests that this potential is close to the Fermi level. This value also agrees with the flat-band potential value obtained from EIS measurements.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Hybrid (Organic/Inorganic) Electrodes from Bacterially Precipitated CdS for PEC/Storage Applications

et al. 2017

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Hybrid organic–inorganic compounds are receiving increasing attention for photoelectrochemical (PEC) devices due to their high electron transport efficiency and facile synthesis. Biosynthesis is a potentially low-cost and eco-friendly method to precipitate transition-metal-based semiconductor nanoparticles (NPs) in an organic matrix. In this work, we examine the structure and composition of bacterially precipitated (BAC) cadmium sulfide (CdS) NPs using electron microscopy, and we determine their PEC properties and the energy band structure by electrochemical measurements. In addition, by taking advantage of the organic matrix, which is residual from the biosynthesis process, we fabricate a prototype photocharged capacitor electrode by incorporating the bacterially precipitated CdS with a reduced graphene oxide (RGO) sheet. Our results show that the hydrophilic groups associated with the organic matrix make BAC CdS NPs a potentially useful component of PEC devices with applications for energy conversion and storage.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Hybrid (Organic/Inorganic) Electrodes from Bacterially Precipitated CdS for PEC/Storage Applications

et al. 2017

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“…Carrier concentration (N D ) and V fb were found from the slope and the X-axis intercept of the linear fit of the Mott-Schottky equation [39]:…”

Section: C-v Measurementmentioning

confidence: 99%

A study on CdCl2 activation of CBD-CdS films

Kumarage¹,

Wijesundera

Seneviratne

et al. 2020

J Mater Sci: Mater Electron

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Cadmium sulfide (CdS) thin films were deposited using chemical bath deposition (CBD) technique on fluorine-doped tin oxide glass substrates. Cadmium sulfate, thiourea, and ammonium hydroxide were used as Cd source, S source, and the complexing agent, respectively in the reaction bath. The post-deposition CdCl 2 activation of chemical bath deposited CdS (CBD-CdS) thin films was done by dip coating in a saturated CdCl 2 bath. X-ray diffractograms show the growth of large CdS grains with better crystalline quality over the recrystallization process due to CdCl 2 treatment. The development of large clusters was determined to be due to coalescence of smaller clusters. The photoelectrochemical (PEC) cell (CdS/Na 2 S 2 O 3 / Pt) parameters, such as V OC and I SC for CdCl 2 activated CBD-CdS thin films were found to be higher compared to untreated CBD-CdS thin films. The improved effective surface area of the film and higher carrier concentration due to grain boundary passivation could be the reason for higher V OC and I SC values found in CdCl 2 -treated CdS films. Additionally, all the CdCl 2 -treated CdS films showed an increase in the optical transmittance spectra and bandgap compared to untreated CdS films. Relative energy band edge position of the grown CdS films was found to be adjustable with the CdCl 2 treatment time. The best photoactivity was found for the CdS films which were dip-coated for 10 min in CdCl 2 solution.

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“…Electrochemical method of obtaining CdS is divided, according to the type of the electrodes used, into electrolysis on inert electrodes and electrolysis with a soluble anode [8]. The use of inert anodes complicates the process because there is a need for constant monitoring of the composition of the electrolyte.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%