Temperature-dependent properties of electrochemically grown CdS thin films from acetate precursor

Werta, S. Z.; Echendu, O. K.; Dejene, F.B.; Urgessa, Z.N.; Botha, J.R.

doi:10.1007/s00339-018-1996-4

Cited by 19 publications

(4 citation statements)

References 30 publications

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“…After that, the CdS layer added to the CdS samples that resulted from (1) to have the doped samples as (3).…”

Section: Proposed Methodsmentioning

confidence: 99%

“…It has a high absorption coefficient, good transfer efficiency, reliable, and inexpensive [1]. CdS considered as interesting material because it used at different applications for instance diode sensor [2], transistor [3], photosensor [4], photodetectors [5], photodiodes [6]. CdS have been deposited by chemical bath deposition (CBD) method [7], sol-gel [8], pules laser deposition technique (PLD) [9], chemical vapour deposition (CVD) [10], RF-sputtering [11].…”

Section: Introductionmentioning

confidence: 99%

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Cadmium sulfide doped with silver as CO2 gas sensor using pyrolysis technique

Al-Jarah¹,

Mohamad

Abdul-Hussein³

2022

IJEECS

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The monitoring of CO2 in our life safety, industrial, and chemical laboratory applications make it an inspiring task. The chemical spray pyrolysis technique was used to prepare CdS/Ag thin films. The nanocrystalline cadmium sulfide thin films were doped with Silver at different doping concentrations (0%, 2%, and 4%). The morphologies, structures, and gas sensing properties of CdS/Ag films are presented. The samples were characterized using X-ray diffraction (XRD) and atomic force microscope (AFM). The XRD results show that the films are a polycrystalline composition and hexagonal type with a favoured orientation along (111) direction. The average grain size (nm) of AFM is between 75 and 55 nm. As a result, Ag doping changes the sensitivity of the samples respectively with the percentage of doping with time. The synthesis samples show controlling sensitivity and the small response of sensitivity are the key point in this study.

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“…After that, the CdS layer added to the CdS samples that resulted from (1) to have the doped samples as (3).…”

Section: Proposed Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cadmium sulfide doped with silver as CO2 gas sensor using pyrolysis technique

Al-Jarah¹,

Mohamad

Abdul-Hussein³

2022

IJEECS

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show abstract

“…Surface roughness study of thin film materials is one key issue especially for solar cells and other engineering applications. 47,48 Scanning electron microscopy (SEM) image tells us only the shape and magnitude of grain size. The magnitudes of the surface roughness are quantitatively determined by comparing the root mean square (rms)-roughness values which can be obtained from SPM images shown in Fig.…”

Section: Scanning Probe Microscopy (Spm)mentioning

confidence: 99%

Optical and Morphological Studies of Electrodeposited CdS Thin Film Grown at Different Deposition Times from Acetate Precursor

Werta¹,

Echendu²,

Dejene³

2019

ECS J. Solid State Sci. Technol.

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Electrodeposited cadmium sulfide (ED-CdS) thin films were prepared on fluorine-doped tin oxide (FTO) substrate at six different deposition times in order to study the impact of deposition time on their properties for possible solar cell application. The deposition was carried out from an electrolytic bath containing cadmium acetate Cd(CH3COO)2 and sodium thiosulfate (Na2S2O3) using simple two electrode configuration. The deposition time was varied at 30, 40, 50, 60, 70 and 80 minutes. The corresponding optical, morphological, surface roughness, compositional and structural properties of the deposited films were characterized using UV-Vis spectroscopy, scanning electron microscopy (SEM), scanning probe microscopy (SPM), energy dispersive X-ray spectroscopy (EDS) and glancing incidence X-ray diffraction (GIXRD) respectively. The results show that, the estimated energy band gaps were in the range of 2.35 to 2.20 eV as deposition time increases, for as-deposited films and 2.38 to 2.30 eV for annealed films. SEM images show very compact and agglomerated spherical grains. From SPM measurements it is observed that, the surface roughness ranges from 2.51 nm to 2.73 nm for as-deposited samples and 1.76 nm to 2.15 nm for annealed ones. EDS shows that the films are cadmium-rich in both as-deposited and annealed conditions.

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“…Besides the efficiency of the cell, for the affordability of this device, production cost reduction is the central research area in solar energy conversion. The solution to this problem is using a thin film solar cell with a low-cost growth method [4].…”

Section: Introductionmentioning

confidence: 99%

Influence of growth time on the properties of CdTe thin films grown by electrodeposition using acetate precursor for solar energy application

Yimamu

Afrassa

Dejene

et al. 2023

Mater. Res. Express

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Cadmium telluride (CdTe) thin films were deposited using a two-electrode electrodeposition configuration from an aqueous acidic solution. The electrolyte solution contains 1 M of cadmium acetate dihydrate (Cd (CH3OO) 2.2H2O) as cadmium precursor and 1 ml of tellurium dioxide (TeO2) as tellurium precursor. The thin films were grown for different deposition times of 60, 120, 180, 240, and 300 min to investigate the effect of the deposition period on the structural, optical, electrical, surface morphology, elemental composition, and surface roughness properties of the CdTe thin films in both as-deposited and heat-treated forms. X-ray diﬀraction (XRD) analysis indicates that the CdTe thin films have polycrystalline cubic zinc blend, orthorhombic and hexagonal structures. The result confirmed that the cubic phase is dominant and (111) plane is the preferential orientation peak. Ultraviolet-visible (UV-Vis) spectrophotometry study shows that the band gap of the as-deposited thin films varies from (1.41-1.45) eV, and after heat treatment, the band gap decreased to (1.35-1.42) eV. Photoelectrochemical cell (PEC) measurements show that CdTe thin films have n-type conductivity in both as-deposited and annealed forms. Scanning electron microscopy (SEM) analysis shows that the surface morphology of CdTe thin films changed as the deposition period increases. After heat treatment, the improvement in grain size was observed. Energy-dispersive X-ray spectroscopy (EDS) analysis shows that the percentage composition of as-deposited CdTe thin films varied with deposition time, with the best composition being recorded at 120 min deposition time. After post-deposition heat treatment (HT), the elemental compositions of Te decreased, and that of Cd increased. When the thin film was deposited at 120 min, the film with stoichiometric composition was observed after heat treatment. Scanning probe microscopy (SPM) measurements revealed that the average surface roughness of the thin films varied with deposition time, with the sample grown for 120 min showing the highest roughness.

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Temperature-dependent properties of electrochemically grown CdS thin films from acetate precursor

Cited by 19 publications

References 30 publications

Cadmium sulfide doped with silver as CO2 gas sensor using pyrolysis technique

Cadmium sulfide doped with silver as CO2 gas sensor using pyrolysis technique

Optical and Morphological Studies of Electrodeposited CdS Thin Film Grown at Different Deposition Times from Acetate Precursor

Influence of growth time on the properties of CdTe thin films grown by electrodeposition using acetate precursor for solar energy application

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