Low temperature CBD growth of CdS on flexible substrates: Structural and optical characterization

Ouafi, Mouad; Jaber, B.; Laânab, L.

doi:10.1016/j.spmi.2019.03.024

Cited by 13 publications

(5 citation statements)

References 32 publications

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“…According to the ICDD crystallographic chart 411049, the CdS film displays three diffraction maxima at 26.75°, 47.840°, and 52.798°, which correspond to the crystalline planes (002), (103), and (112), respectively, of the hexagonal crystalline phase. These results agree with the ones obtained by Ouafi and Willars-Rodríguez [24][25] when CdS is chemically deposited. The diffractogram of the CdS/TiO 2 heterostructure confirms the formation of a heterostructure since it shows the presence of the two phases described above.…”

Section: Structural Resultssupporting

confidence: 92%

Impact of Rhodamine B solution on charge carrier generation and photocatalytic performance in CdS/TiO₂ heterostructures synthesized by CBD.

Cruz González,

Noguez del Águila,

Roque

et al. 2024

J. Phys.: Conf. Ser.

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This article presents the study of Rhodamine B solution effects on the generation of charge carriers and the photocatalytic performance of CdS/TiO2 heterostructure films. CdS/TiO2 heterostructure films were synthesized using the chemical bath deposition technique (CBD). The structure and morphology of the heterostructures were studied by X-ray diffraction (XRD), and Scanning Electron Microscope (SEM), respectively. The optical properties of the CdS/TiO2 heterostructures were characterized using a UV–vis spectrophotometer. The results showed that the CdS/TiO2 optical band gap energy (Eg) was 2.75 eV, between the TiO2 band gap energy (3.38 eV) and the CdS band gap energy (2.57 eV). The electrochemical characterization indicated that the photocurrent of the CdS/TiO2 heterostructure decreased from 29 mA to 12.4 mA when the UV-vis light source was turned off. The density of charge carriers generated on the surface of the CdS/TiO2 was simulated employing the WXAMPS software. The results suggest that the thickness of the TiO2 layer should be optimized to allow the activation of CdS. Finally, this study concludes that the presence of rhodamine B in the solution attenuates light transmission and affects the generated electron-hole pairs, resulting in poor photocatalytic behavior.

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Section: Structural Resultssupporting

confidence: 92%

Impact of Rhodamine B solution on charge carrier generation and photocatalytic performance in CdS/TiO₂ heterostructures synthesized by CBD.

Cruz González,

Noguez del Águila,

Roque

et al. 2024

J. Phys.: Conf. Ser.

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“…As can be seen, annealed samples presented structural arrangement [ 18 , 27 , 49 ] showing a diffraction pattern at 2θ (degree) = 26.5 indexed to (002) or (111). It is related to the characteristics of a hexagonal structure [ 17 , 27 ] or a cubic crystalline structure of CdS [ 25 , 48 ] respectively. Furthermore, these results are consistent with those of other authors [ 51 , 52 ].…”

Section: Resultsmentioning

confidence: 99%

“…For CdS applications mentioned above, CdS can be presented in different materials, mainly studied through thin films and nanoparticles. There are several physical and chemical methods for the deposition of CdS thin films, the most commonly used among them are vacuum evaporation [ 17 ], pulsed laser ablation (PLA) [ 18 ], electrodeposition [ 19 ], molecular beam epitaxy (MBE) [ 17 ], sputtering, successive ionic layer adsorption and reaction (SILAR) [ 20 ], chemical spray pyrolysis (CSP) [ 21 ], RF magnetron sputtering [ 22 ], hydrothermal synthesis [ 23 ], and chemical bath deposition (CBD) [ 8 , 13 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

Study of CdS/CdS Nanoparticles Thin Films Deposited by Soft Chemistry for Optoelectronic Applications

Carrasco-Chavez,

Rubio-Valle,

Jiménez-Pérez

et al. 2023

Micromachines

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Chalcogenides semiconductors are currently being studied as active layers in the development of electronic devices in the field of applied technology. In the present paper, cadmium sulfide (CdS) thin films containing nanoparticles of the same material as the active layer were produced and analyzed for their application in fabricating optoelectronic devices. CdS thin films and CdS nanoparticles were obtained via soft chemistry at low temperatures. The CdS thin film was deposited via chemical bath deposition (CBD); the CdS nanoparticles were synthesized via the precipitation method. The construction of a homojunction was completed by incorporating CdS nanoparticles on CdS thin films deposited via CBD. CdS nanoparticles were deposited using the spin coating technique, and the effect of thermal annealing on the deposited films was investigated. In the modified thin films with nanoparticles, a transmittance of about 70% and a band gap between 2.12 eV and 2.35 eV were obtained. The two characteristic phonons of the CdS were observed via Raman spectroscopy, and the CdS thin films/CdS nanoparticles showed a hexagonal and cubic crystalline structure with average crystallite size of 21.3–28.4 nm, where hexagonal is the most stable for optoelectronic applications, with roughness less than 5 nm, indicating that CdS is relatively smooth, uniform and highly compact. In addition, the characteristic curves of current-voltage for as-deposited and annealed thin films showed that the metal-CdS with the CdS nanoparticle interface exhibits ohmic behavior.

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“…The optical bandgap energy of the semiconductor plays a significant role in identifying the band structure and the construction of photovoltaic cells. The optical band gap (E g ) of the samples is calculated from the plot of (ah ν) 2 versus hν according to equation [25]. Figure 6 illustrates the direct optical band gap of the CdS/PMMA composite, and the outcomes are recorded in table 2.…”

Section: The Optical Energy Bandgapmentioning

confidence: 99%

The enhancement of the optical properties of CdS/PMMA by adding fullerence C60

Maged¹,

Mansour²

2022

Phys. Scr.

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The C60/CdS/ /PMMA nanocomposites were synthesized via the casting method. Prepared samples were characterized by XRD, SEM, TEM and FTIR analysis. UV–visible spectroscopy was used to evaluate optical properties of CdS/ /PMMA& C60/CdS/ /PMMA nanocomposite. The Eg decreased from 2.65 eV to 2 eV with increasing CdS content. The refractive index is found to be 1.8 for PMMA and it increases with increasing nano dopant in PMMA, 6.5 for 8% CdS/PMMA composite. while it was around 24 for 0.6 % C60. Degradation efficiency is 17% for CdS/PMMA, and 33% for C60/CdS/PMMA nanocomposite. Thus C60/CdS/PMMA can be used for solar cell applications, optoelectronic devices and photocatalytic activity.

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Low temperature CBD growth of CdS on flexible substrates: Structural and optical characterization

Cited by 13 publications

References 32 publications

Impact of Rhodamine B solution on charge carrier generation and photocatalytic performance in CdS/TiO₂ heterostructures synthesized by CBD.

Impact of Rhodamine B solution on charge carrier generation and photocatalytic performance in CdS/TiO₂ heterostructures synthesized by CBD.

Study of CdS/CdS Nanoparticles Thin Films Deposited by Soft Chemistry for Optoelectronic Applications

The enhancement of the optical properties of CdS/PMMA by adding fullerence C60

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Low temperature CBD growth of CdS on flexible substrates: Structural and optical characterization

Cited by 13 publications

References 32 publications

Impact of Rhodamine B solution on charge carrier generation and photocatalytic performance in CdS/TiO2 heterostructures synthesized by CBD.

Impact of Rhodamine B solution on charge carrier generation and photocatalytic performance in CdS/TiO2 heterostructures synthesized by CBD.

Study of CdS/CdS Nanoparticles Thin Films Deposited by Soft Chemistry for Optoelectronic Applications

The enhancement of the optical properties of CdS/PMMA by adding fullerence C60

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Impact of Rhodamine B solution on charge carrier generation and photocatalytic performance in CdS/TiO₂ heterostructures synthesized by CBD.

Impact of Rhodamine B solution on charge carrier generation and photocatalytic performance in CdS/TiO₂ heterostructures synthesized by CBD.