Showing papers on "Chemical bath deposition published in 2021"
TL;DR: In this paper, a facile design of ternary nanocomposites of polydimethylsiloxane (PDMS)/graphene oxide nanosheets decorated with ZnO nanorods (GO-ZnO NRs) was reported.
61 citations
TL;DR: In this paper, Fe7S8 and FeS2 encapsulated in hollow carbon fibers (NHCFs) were constructed by a combined chemical bath deposition and subsequent sulfidation treatment.
55 citations
TL;DR: In this article, a selenium enriched hybrid NiSe2@Fe3Se4 (NFS) nanocomposites have been facilely deposited on Ni-foam using chemical bath deposition (CBD) technique.
50 citations
TL;DR: In this article, the authors report the most important consequences related to the polarity in ZnO nanowires for piezotronic and piezoelectric devices.
46 citations
TL;DR: In this article, the structural, morphological and optical properties of ZnS/p-Si heterostructures have been thoroughly investigated using X-ray diffraction, x-ray photoelectron spectroscopy, scanning electron microscopy, UV-visible and photoluminescence spectrography.
38 citations
TL;DR: In this paper, an asymmetric supercapacitor was fabricated with the as-synthesized CoSe-Se@Ni foam electrode as the cathode, activated carbon-Ni foam electrodes as the anode, and a thin filter paper separator soaked in 1/M aqueous KOH electrolyte solution.
35 citations
TL;DR: In this paper, a binary metal oxide/hydroxide as a hierarchical NiO@Ni(OH)2 nanoarrays was synthesized through several steps, and the obtained nanotubes served as ideal 1D superhighways for charge storage and ion delivery.
35 citations
TL;DR: In this paper, nanocrystalline ZnS thin films were deposited on p-Si substrates, and the crystalline quality of the as-deposited thin films was studied using X-ray diffraction and scanning transmission electron microscopy (STEM).
Abstract: The chemical bath deposition method has been widely used to synthesize low-cost and large scalable UV light photodetectors. Herein, nanocrystalline ZnS thin films were deposited on p-Si substrates. The crystalline quality of the as-deposited ZnS thin films was studied using X-ray diffraction (XRD) and scanning transmission electron microscopy (STEM). It was found that ZnS films showed good crystallinity with the growth direction along the (111) planes of a cubic zinc blend structure, as confirmed by both XRD and STEM analysis. The crystallite size was calculated to be 2.49 nm which is very close to the Bohr radius. Optical measurements revealed a blue shift of 5 nm which indicates quantum confinement effects in the as-deposited ZnS films. Furthermore, the morphology and grain size of ZnS film was estimated from scanning electron microscopy (SEM). Photoluminescence (PL) measurements showed evidence of multiple emissions in the as-deposited ZnS films, indicating the presence of commonly known intrinsic defects, for instance, Zn and S vacancies. The fabricated heterojunction ZnS/p-Si yields a high sensitivity (1.98 × 10 4 ), fast response and high peak detectivity (4.29 × 1012). The device showed a good responsivity of (68.98 mA/W) without biasing towards the UV light (350 nm) regime. Moreover, the linear Dynamic Range of 85.92 dB and the External Quantum Efficiency (EQE) of 23.42 % was obtained that can be utilized for UV photodetectors applications.
34 citations
TL;DR: Using a cost-effective and time-efficient chemical bath deposition (CBD) approach, zinc oxide (ZnO) nanorod doped with various cobalt concentrations ranged from 2% to 8% have been synthesized on ITO substrates as mentioned in this paper.
28 citations
TL;DR: In this article, the authors proposed a self-powered heterojunction UV photodetector based on p-CuZnS and n-GaN, which is prepared by a simple chemical bath deposition.
Abstract: The heterojunction UV photodetector based on p-CuZnS and n-GaN is prepared by a simple chemical bath deposition. The CuZnS/GaN film device shows a significantly enhanced photocurrent at 3 V and 350 nm, a good rectifying behavior (ratio of 19 000 at ±3 V) and a large open circuit voltage (0.55 V). Furthermore, the CuZnS/GaN photodetector exhibits excellent self-powered characteristics under 350 nm light illumination, including a high photocurrent (19 μA), a fast response speed (0.14/40 ms) and an ultrahigh on/off ratio (3 × 108). More importantly, the CuZnS/GaN photodetector presents a large detectivity of 8 × 1013 Jones and an ultrahigh linear dynamic range of 137 dB at 320 nm light illumination at zero bias. These results suggest that the CuZnS/GaN film devices have great potential as high-performance self-powered UV photodetectors for practical applications.
27 citations
TL;DR: In this article, dilute chemical bath deposition technique has been used to deposit CdZnS thin films on soda-lime glass substrates, and the structural, morphological, optoelectronic properties of as-grown films have been investigated as a function of different Zn2+ precursor concentrations.
TL;DR: In this article, a controlled synthesis of nanostructured NiCo2O4 thin films directly on stainless steel substrates by facile and economical chemical bath deposition technique, without adding a surfactant or a binder.
TL;DR: In this paper, a modified chemical bath deposition (M-CBD) method was made by adding air bubbles to the growth solution during the CBD process, and the viability and effectiveness of M-cBD were examined by developing UV photodetectors based on ZnO NRs.
Abstract: Ultraviolet (UV) photodetectors (PDs) based on high-quality well-aligned ZnO nanorods (NRs) were fabricated using both modified and conventional chemical bath deposition (CBD) methods. The modified chemical bath deposition (M-CBD) method was made by adding air bubbles to the growth solution during the CBD process. The viability and effectiveness of M-CBD were examined by developing UV PDs based on ZnO NRs. The ZnO nano-seed layer was coated on a glass substrate utilizing radiofrequency (RF) sputtering. The impact of the different growth-times on morphology, growth rate, crystal structure, and optical and chemical properties were investigated systematically using different characterization techniques, such as field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) analysis, UV-VIS double beam spectrometer, and energy dispersive X-ray analysis (EDX), respectively. The Al/ZnO UV PDs based on ZnO nanorods were fabricated with optimum growth conditions through the two methods of preparation. This study showed that the synthesized ZnO NRs using the M-CBD method for different growth times possess better properties than the conventional method under similar deposition conditions. Despite having the highest aspect ratio and growth rate of ZnO NRs, which were found at 4 h growth duration for both methods, the aspect ratio of ZnO NRs using the M-CBD technique was comparatively higher than the conventional CBD method. Besides, the UV PDs fabricated by the M-CBD method at 5 V bias voltage showed high sensitivity, short response time, quick recovery time, high gain, low dark current, and high photocurrent compared with the UV PD device fabricated by the conventional CBD method.
TL;DR: A review of current research activities on growth of ZnO nanorods is presented in this paper, where various water based routes of synthesis, and is further characterized by the type of substrate used for the growth.
Abstract: Nanostructured ZnO has got a lot of interest as a suitable material for various applications especially sensing, energy conversion and storage. ZnO nanostructures can be synthesized in a number of ways. It is one of the materials that can be prepared in a variety of morphologies including hierarchical nanostructures. This review article presents a review of current research activities on growth of ZnO Nanorods. The article covers various water based routes of synthesis, and is further characterized by the type of substrate used for the growth. The growth factors involved in the hydrothermal and chemical bath deposition methods are discussed. These factors include the variety of precursors, time, temperature and the seeding method employed. At the end, applications such as gas sensing and improvement in opto-electric properties in relation to the morphology are discussed.
TL;DR: SILAR as mentioned in this paper is an evolution and combination of two other deposition methods, the Atomic Layer Deposition and Chemical Bath Deposition, which has gained increasing interest in the scientific community due to its relative simplicity and low cost.
Abstract: Methods for the fabrication of thin films with well controlled structure and properties are of great importance for the development of functional devices for a large range of applications. SILAR, the acronym for Successive Ionic Layer Adsorption and Reaction, is an evolution and combination of two other deposition methods, the Atomic Layer Deposition and Chemical Bath Deposition. Due to a relative simplicity and low cost, this method has gained increasing interest in the scientific community. There are, however, several aspects related to the influence of the many parameters involved, which deserve further deepening. In this review article, the basis of the method, its application to the fabrication of thin films, the importance of experimental parameters, and some recent advances in the application of oxide films are reviewed. At first the fundamental theoretical bases and experimental concepts of SILAR are discussed. Then, the fabrication of chalcogenides and metal oxides is reviewed, with special emphasis to metal oxides, trying to extract general information on the effect of experimental parameters on structural, morphological and functional properties. Finally, recent advances in the application of oxide films prepared by SILAR are described, focusing on supercapacitors, transparent electrodes, solar cells, and photoelectrochemical devices.
TL;DR: In this paper, the Sb2Se3 solar cells exhibit impressive conversion efficiency of 5.93%, demonstrating the great potential of MOSC to replace the traditional chemical bath deposition (CBD) process.
TL;DR: In this paper, the binder-free deposition of porous marigold micro-flower like NiCo2O4 (PNCO) on the flexible stainless-steel mesh (FSSM) electrode by simple chemical bath deposition was reported.
Abstract: Nanostructured NiCo2O4 is a promising material for energy storage systems. Herein, we report the binder-free deposition of porous marigold micro-flower like NiCo2O4 (PNCO) on the flexible stainless-steel mesh (FSSM) as (PNCO@FSSM) electrode by simple chemical bath deposition. The SEM and EDS analysis revealed the marigold micro-flowers like morphology of NiCo2O4 and its elemental composition. The porous nature of the electrode is supported by the BET surface area (100.47 m2 g−1) and BJH pore size diameter (∼1.8 nm) analysis. This PNCO@FSSM electrode demonstrated a specific capacitance of 530 F g−1 at a high current density of 6 mA cm−2 and revealed 90.5% retention of specific capacitance after 3000 cycles. The asymmetric supercapacitor device NiCo2O4//rGO within a voltage window of 1.4 V delivered a maximum energy density of 41.66 W h kg−1 at a power density of 3000 W kg−1. The cyclic stability study of this device revealed 73.33% capacitance retention after 2000 cycles. These results indicate that the porous NiCo2O4 micro-flowers electrode is a promising functional material for the energy storage device.
TL;DR: In this article, the composites of α-Fe2O3/Co3O4 heterojunction decorated with rGO were prepared via hydrothermal, chemical bath deposition (CBD) and thermal reduction methods.
Abstract: To improve α-Fe2O3 gas sensing properties the composites of α-Fe2O3/ Co3O4 heterojunction decorated with rGO were prepared via hydrothermal, chemical bath deposition (CBD) and thermal reduction methods. Structure and morphology characterizations of the as-prepared products were proved by X-ray diffraction (XRD), Raman spectra (Raman), Scanning electron microscope (SEM),Transmission Electron Microscope (TEM), X-ray photoelectron spectroscopy (XPS), and Ultraviolet and visible spectrophotometry(UV-vis). Gas-sensing measurements revealed that the ternary composite of α-Fe2O3/Co3O4-5min-rGO-0.15 wt % showed high response of 17.64 at 130°C towards 2 ppm NO2, which is 6.17 times and 1.46 times higher than that of pure α-Fe2O3 (2.86) and binary composite of α-Fe2O3/Co3O4-5 min (12.16) and faster response／recovery time compared with published NO2 sensors based on α-Fe2O3. The enhanced sensing mechanism was also discussed in detail, which is attributed to the synergistic effects aroused by the as-formed p-n heterojunctions and modification of rGO. The work shed a new light to design p-n junction composites and fabricate high performance NO2 sensors.
TL;DR: This work successfully developed a self-powered photodetector based in a novel solution processed p-NiO/n-CdS:Al heterojunction, showing excellent current rectification characteristic ratio up to 3 orders in dark and distinctive photovoltaic behavior under light illumination.
Abstract: Solution-processed photodetectors have emerged as the next generation of sensing technology owing to their ease of integration with electron devices and of tuning photodetector performance. Currently, novel self-powered photodetectors without an external power source, for use in sensing, imaging and communication, are in high demand. Herein, we successfully developed a self-powered photodetector based on a novel solution-processed p-NiO/n-CdS:Al heterojunction, which shows an excellent current rectification characteristic ratio of up to three orders in the dark and distinctive photovoltaic behavior under light illumination. The complete solution synthesis route followed the development of CdS:Al thin films on ITO substrates by chemical bath deposition and NiO thin films by the sol-gel route. Optical absorption data revealed that NiO is more active in the UV region and CdS:Al has a majority of absorption in the visible region; so, upon light illumination, the effective separation of photogenerated carriers produces fast photodetection in the UV-visible region. The photoresponsivity values of the fabricated device were calculated to be 55 mA W-1 and 30 mA W-1 for UV and visible illumination, respectively. Also, the device has a fast rise and decay photoresponse speed at zero bias voltage, due to the self-driven photovoltaic effect which makes this heterojunction a self-powered device. This complete solution and new method of fabrication make it possible to combine different materials and flexible substrates, enhancing its potential applications in photodetectors, optoelectronic devices and sensors.
TL;DR: In this paper, the authors synthesized 1D bimetallic hydrogen phosphate [CoxNix(HPO4)] nanorods by using a simple and effective chemical bath deposition method for supercapacitor applications.
TL;DR: In this paper, n-type indium sulfide (In2S3) serving as the buffer layer between TiO2 and the Sb 2S3 layers was prepared by chemical bath deposition (CBD) method.
TL;DR: In this article, a photoelectrochemical (PEC) water splitting in 0.1m Na2SO4 aqueous solution was used to produce H2 from water splitting for development of artificial photosynthesis on the copper indium sulfide (CuInS2) electrodes.
TL;DR: In this paper, high quality zinc oxide (ZnO) nanostructures were synthesized on glass slide substrates using modified chemical bath deposition (M-CBD) method at low temperature.
TL;DR: In this paper, the effect of the concentration of metallic precursor on the structural, morphological, and optical properties of chemical bath deposited zinc sulfide thin films was investigated in a photovoltaic application.
Abstract: Thin films of zinc sulfide (ZnS) with different concentrations of zinc acetate have been made by chemical bath deposition technique in acidic medium (pH = 5) on glass substrate using zinc acetate and sodium sulfide as sources of Zn+2 ion and S−2 ion, respectively, and ethylenediaminetetraacetate as complexing agents and sulfuric acid to adjust pH value at a constant deposition temperature of 85°C, and the deposition time of 90 minutes was used. The effect of the concentration of metallic precursor on the structural, morphological, and optical properties of chemical bath deposited zinc sulfide thin films was investigated in this study. The XRD result confirmed mixed phases of crystalline and amorphous structure dominating other phases, which is witnessed by larger crystallite size than other phases. It reveals that the thin films had hexagonal structure at the medium concentration with preferred orientation along (111) plane, and at lower and higher concentration, it showed that film has an amorphous structure in nature. The crystallinity of all the phases significantly enlarged with increasing the zinc precursor concentration. The SEM micrographs showed high-pitched edged irregular-shaped grains covering the substrate with pinholes and bangs. The optical properties investigated by the UV-VIS spectrometer specified a decrease in the optical bandgap of the films between 3.5 eV and 2.6 eV as the zinc acetate concentration in the solution increased from 0.1 to 0.2 M. It showed that the zinc sulfide had high absorption in the UV radiation. The main finding of this paper is that metallic precursor concentration has a significant role in the optical, morphological, and microstructural properties of the cobalt sulfide thin films, which are most suitable for photovoltaic applications.
TL;DR: In this article, a hetero-junction organic/inorganic (Polyaniline (PANI)) on n type Silicon substrate prepared by electrophoretic deposition (EPD) is reported.
TL;DR: In this paper, the reduced graphene oxide@dysprosium sulfide (rGO@Dy2S3) composite and MnO2 films are synthesized using successive ionic layer adsorption and reaction and from chemical bath deposition methods, respectively.
TL;DR: In this article, a modified batch CBD process, a double chemical bath deposition (DC), was used for batch fabrication of large-area (400 cm2) SnO2 films and realized a homogenized PCE with a variance (Va) of 0.127, comparing to that of control sample of Va at 2.833.
TL;DR: The structural, morphological and optoelectrical characteristics of Cadmium sulfide (CdS) thin films grown on ultra-thin glass substrates via Radio Frequency (RF) magnetron sputtering and chemical bath deposition (CBD) have been explored in this paper.