Surface topography study of CdS thin film nanostructure synthesized by CBD

Al-Fouadi, Anwar H. Ali; Hussain, Dhia Hadi; Rahim, Hasien Ali

doi:10.1016/j.ijleo.2016.11.175

Cited by 17 publications

(10 citation statements)

References 10 publications

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“…In addition, as shown in the granularity cumulation distribution charts in Figure 3 , the diameter range for the pure PANI sample was between 0.15 μm and 1.75 μm. After 120 s of I 2 doping, however, the diameter range became much wider, between 0.55 μm and 2.95 μm, due to particle aggregation, thereby increasing the grain size [ 18 , 19 , 20 ]. As the grain sizes determine the number of grain boundaries, the increase in the average grain diameter from 0.5 μm to 1.8 μm means that increasing the I 2 doping time increases the grain size and simultaneously decreases the number of grain boundaries.…”

Section: Resultsmentioning

confidence: 99%

Atmospheric Pressure Plasma Polymerization Synthesis and Characterization of Polyaniline Films Doped with and without Iodine

et al. 2017

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Although polymerized aniline (polyaniline, PANI) with and without iodine (I2) doping has already been extensively studied, little work has been done on the synthesis of PANI films using atmospheric pressure plasma (APP) deposition. Therefore, this study characterized pure and I2-doped PANI films synthesized using an advanced APP polymerization system. The I2 doping was conducted ex-situ and using an I2 chamber method following the APP deposition. The pure and I2-doped PANI films were structurally analyzed using field emission scanning electron microscope (FE-SEM), atomic force microscope (AFM), X-ray Diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and time of flight secondary ion mass spectrometry (ToF-SIMS) studies. When increasing the I2 doping time, the plane and cross-sectional SEM images showed a decrease in the width and thickness of the PANI nanofibers, while the AFM results showed an increase in the roughness and grain size of the PANI films. Moreover, the FT-IR, XPS, and ToF-SIMS results showed an increase in the content of oxygen-containing functional groups and C=C double bonds, yet decrease in the C–N and C–H bonds when increasing the I2 doping time due to the reduction of hydrogen in the PANI films via the I2. To check the suitability of the conductive layer for polymer display applications, the resistance variations of the PANI films grown on the interdigitated electrode substrates were also examined according to the I2 doping time.

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Section: Resultsmentioning

confidence: 99%

Atmospheric Pressure Plasma Polymerization Synthesis and Characterization of Polyaniline Films Doped with and without Iodine

et al. 2017

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“…Transmittance decrease when the CdS nanoparticles are included due to greater amounts of material having dispersed on the surface, as observed in Figure 3 , lines B1 and B2 and in Figure 4 lines D1 and D2. The decrease in the transmittance indicates that there is better homogeneity and lower roughness in the thin film [ 8 , 13 ]. When thermal treatment is applied the material becomes denser and transmittance is reduced [ 40 ].…”

Section: Resultsmentioning

confidence: 99%

“…In this way, CdS is an II-IV (binary) type n semiconductor with excellent properties, such as a band gap of 2.42 eV at room temperature, with high carrier concentration (10 16 –10 18 cm − 3 ) and mobility (0.1–10 cm 2 V − 1 s − 1 ), a high absorption coefficient (>10 4 cm −1 ), and high electrochemical stability [ 7 , 8 , 9 ]. These properties have led to its effective development for photovoltaic solar cells [ 10 ], light-emitting diodes [ 5 ], photoelectric devices [ 11 ], chemical sensors [ 12 ], surface acoustic wave devices, thin film transistors (TFTs) [ 6 , 7 , 13 ], photocatalysis and biological sensors, optical coding, optical data storage and sensing, non-linear integrated optical devices [ 5 , 14 , 15 ] and photocatalytic hydrogen generation [ 16 ].…”

Section: Introductionmentioning

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%

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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 absorption peak of the CdS thin films was located at 493 nm, whereas the absorption edge of bulk CdS was blue shifted to 515 nm as a result of the decrease in the average size of CdS particles (3.92 nm). Thus, the co-sensitizing effect of CdS can enhance the performance of the QDSSC [23]. Furthermore, the band gaps of the grown CdS thin films were calculated from the following equation [24,25]:…”

Section: Resultsmentioning

confidence: 99%

Effect of cadmium sulfide quantum dots prepared by chemical bath deposition technique on the performance of solar cell

et al. 2019

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Q UANTUM dots are very tiny semiconductor particles used in solar cells; their optical and electronic properties differ from those of macro particles. They could improve the performance of solar cells if they are prepared in the suitable size. In this work, cadmium sulfide (CdS) quantum dot (QD) thin films were prepared on transparent conductive fluorinedoped tin oxide substrates. The formation and deposition of CdS QDs were optimized using the chemical bath deposition method under varied operating conditions (precursor concentration, and temperature). Chemical bath deposition is an effective method for the deposition of CdS on porous TiO 2 films as QDs. The structural, morphological, and optical properties of the prepared CdS thin films were studied using X-ray diffraction, field-emission scanning electron microscopy, Raman spectroscopy and UV-Vis-near infrared spectroscopy. The particle size of the CdS QDs was calculated to be 3-7 nm from the observed X-ray diffraction pattern. The band gap was blue shifted in the UV-Vis absorption spectrum compared with that of bulk CdS, confirming the formation of CdSQDs.

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Surface topography study of CdS thin film nanostructure synthesized by CBD

Cited by 17 publications

References 10 publications

Atmospheric Pressure Plasma Polymerization Synthesis and Characterization of Polyaniline Films Doped with and without Iodine

Atmospheric Pressure Plasma Polymerization Synthesis and Characterization of Polyaniline Films Doped with and without Iodine

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

Effect of cadmium sulfide quantum dots prepared by chemical bath deposition technique on the performance of solar cell

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