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Papers by Sandip Jagadale

Research paper thumbnail of Synthesis and characterization of highly ordered nanosized PbS thin films: modified silar

Nanosystems: Physics, Chemistry, Mathematics, 2016

Research paper thumbnail of Synthesis and Characterization ofNanostructured CdZnSSe Thin Films by Arrested Precipitation Technique (APT

In the present investigation efforts are made to prepare CdZnSSechaIcogenide thin films by simple... more In the present investigation efforts are made to prepare CdZnSSechaIcogenide thin films by simple, cost effective arrested precipitation technique (APT). The films were obtained in a chemical bath maintained at 55±5"C temperature, pH 10.8±0.2 and deposition time 90 min. The obtained thin films were thoroughly characterized paying particular attention to their structural, compositional, morphological and optical properties. The surface morphology and composition of as deposited thin films are studied by using Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDS). SEM micrographs reveal non-uniform distribution and nearly spherical grains. The X-ray diffraction pattern showed that highly textured CdZnSSe films with hexagonal structure. The optical absorption spectra show band gap value 2.12 eV.

Research paper thumbnail of Chemosynthesis, characterization and PEC performance of CdZn(SSe) 2 thin films by arrested precipitation technique (APT

In the present work, we have used simple, cost effective arrested precipitation technique (APT) t... more In the present work, we have used simple, cost effective arrested precipitation technique (APT) to deposit CdZn(SSe) 2 thin films. Preparative conditions were optimized during the initial stage of experimentation to obtain good quality CdZn(SSe) 2 thin films. The as-deposited film was studied for its structural, morphological, optical, and compositional analysis by XRD, SEM, UV-Vis-NIR spectrophotometer and EDSanalysis techniques respectively. XRD analysis revealed that the film was polycrystalline in nature and exhibit hexagonal crystal structure. The SEM micrograph shows the formation of spherical surface morphology. EDS results confirm the presence of Cd, Zn, S and Se elements in the synthesized thin film. The band gap value of thin film was calculated from the absorption spectra which is found to be 1.8 eV. From J–V measurements, photo-conversion efficiency is found to be 0.07%.

Research paper thumbnail of Time dependent facile hydrothermal synthesis of tio2 nanorods andtheir photoelectrochemical applications 2157 7439 S

In the present investigation, we report facile hydrothermal synthesis of TiO 2 nanorods with high... more In the present investigation, we report facile hydrothermal synthesis of TiO 2 nanorods with high density rutile phase on Transparent Conducting Oxide (TCO) for enhanced solar cell application. The structural, optical, morphological, compositional and electrochemical properties are investigated by detailed XRD, UV-Vis-NIR spectrophotometer, FESEM, TEM, EDAX, XPS and photoelectrochemical studies. It is demonstrated that, the deposited TiO 2 thin film shows pure rutile phase with tetragonal crystal structure. Optical spectra showed strong light absorption in UV region and FESEM images confirm the time dependent growth of TiO 2 nanorods. EDAX and XPS Spectra confirm the formation of pure TiO 2 nanorods. Photoelectrochemical performance with respect to time dependent growth of TiO 2 nanorods showed highest photoconversion efficiency ɳ = 5.1%.

Research paper thumbnail of Chemistry Raghunath K. Mane

In the present investigation, we have synthesized nanocrystalline cadmium sulphoselenide Cd(SSe) ... more In the present investigation, we have synthesized nanocrystalline cadmium sulphoselenide Cd(SSe) thin films on ultrasonically cleaned bare and FTO coated glass substrate using facile, cost effective arrested precipitation technique (APT) at different time intervals (1h,1.5h, 2h and 2.5h). The absorption spectrum shows a strong absorption in the 300-1100 nm wavelength range with band gap variation in the range of 2.05 eV to 1.87 eV. The X-ray diffraction (XRD) patterns shows nanocrystalline nature with crystallite size 58 nm to 76 nm and exhibits pure hexagonal crystal structure. The scanning electron microscopy (SEM) demonstrates formation of well adherent, pinhole free thin films with mixed nanosphere nanopetal like morphology. Energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS) showed that the composition of Cd(SSe) thin films is good agreement with stoichiometry. Finally these prepared thin films tested for photoelectrochemical (PEC) performance in sulphide / polysulphide electrolyte and results are

Research paper thumbnail of Novel synthetic route for the synthesis of ternary Cd(SSe) photoelectrode and their photoelectrochemical application

In the present investigation, we have synthesized nanocrystalline cadmium sulphoselenide Cd(SSe) ... more In the present investigation, we have synthesized nanocrystalline cadmium sulphoselenide Cd(SSe) thin film photoelectrodes on ultrasonically cleaned bare and fluorine doped tin oxide coated glass substrate using facile, cost effective and extremely convenient arrested precipitation technique at different time intervals (1, 1.5, 2 and 2.5 h). Optical, structural, morphological, compositional and photoelectrochemical (PEC) properties were investigated as function of deposition time. The synthesized films were characterized by UV–Vis-NIR spectrophotometer, X-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), Energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). Optical absorption spectrum shows a strong absorption in the wavelength range 300–1100 nm with band gap variation in the range of 2.05–1.87 eV. The XRD patterns shows nanocrystalline nature with crystallite size 58–76 nm and exhibits pure hexagonal crystal structure. The SEM micrograph demonstrates formation of well adherent, pin-hole free thin films with nanosphere, nanopetal like morphology which is finally modified into flowerlike morphology. Transmission electron microscopy (TEM) and HRTEM results confirm the nanocrystalline nature and selected area electron diffraction pattern reveals hexagonal crystal structure of deposited Cd(SSe) thin films. EDS and XPS showed that the composition of Cd(SSe) thin films was of good stoichiometry. Finally these prepared photo-electrodes were tested for their PEC performance in sul-phide/polysulphide electrolyte and promising results were found.

Research paper thumbnail of Development of CdZn(SSe) 2 thin films by using simple aqueous chemical route: Air annealing

In the present investigation we have successfully depositedCdZn(SSe) 2 thin films by using facile... more In the present investigation we have successfully depositedCdZn(SSe) 2 thin films by using facile self organised Arrested Precipitation Technique (APT).Preparative conditions were optimized during initial stage of experimentation to obtain good quality CdZn(SSe) 2 thin film.The resulted thin film was annealed in air at 373K for 1hr. FurtherOptical, structural, morphological and compositional properties of annealed thin filmswere investigated.The optical band gap value of thin film was estimated from the absorption spectrum which is found to be 1.85 eV. X-ray diffraction (XRD) study reveals that grown CdZn(SSe) 2 thin film was nanocrystalline with hexagonalcrystal structure.The SEM micrograph shows the formation of layered structure containing dense layer covered by uniform distribution of spherical grains. Energy dispersive X-ray (EDS) analysis confirm the presence of Cd, Zn, S and Se elements in the synthesized and annealed thin film. The film was obtained with a well-defined composition, very close to the expected atomic percentage.

Research paper thumbnail of Low temperature simple aqueous phase chemical synthesis and characterization of ZnO thin films

Zinc oxide (ZnO) nanorods were successfully deposited on the glass and fluorine doped tin oxide c... more Zinc oxide (ZnO) nanorods were successfully deposited on the glass and fluorine doped tin oxide coated glass substrate in an aqueous alkaline medium using zinc acetate, ethylene diamine, hexamethylene tetraamine and ethanol by simple chemical reflux method at low temperature. An Optical, structural, morphological compositional and photoelectrochemical (PEC) properties of ZnO thin films were investigated. Optical absorption study of the sample shows band gap value 3.24 eV. The X-ray diffraction (XRD) pattern indicates that the deposited material is nanocrystalline and nanorods formation takes place along (002) plane having hexagonal wurtzite crystal structure. The scanning electron microscopy (SEM) images demonstrate existence of hexagonal nanorods with average50nm lengths and 10 nm diamete.The X-ray photoelectron spectroscopy (XPS) study confirms well composed thin film formation. The PEC study revel that material exhibit photo conversion efficiency 1.84 % for solar cell application.

Research paper thumbnail of Synthesis and characterization of highly ordered nanosized PbS thin films: modified silar

In the current status, we have successfully synthesized lead sulfide (PbS) thin films using a mod... more In the current status, we have successfully synthesized lead sulfide (PbS) thin films using a modified successive ionic layer absorption and reaction (SILAR) method. The synthesized film was characterized using UV-Vis-NIR spectrophotometer, X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) techniques for optical, structural and morphological properties. Opto-structural study demonstrates that synthesized thin film has a pure crystal structure. The surface morphology study indicates a nanospherical surface morphology without pinhole on the substrate surfaces. Overall study clearly demonstrates that the synthesized PbS thin film by SILAR method have great potential for sensitization of oxide microstructure.

Research paper thumbnail of Synthesis and characterization of highly ordered nanosized PbS thin films: modified silar

Nanosystems: Physics, Chemistry, Mathematics, 2016

Research paper thumbnail of Synthesis and Characterization ofNanostructured CdZnSSe Thin Films by Arrested Precipitation Technique (APT

In the present investigation efforts are made to prepare CdZnSSechaIcogenide thin films by simple... more In the present investigation efforts are made to prepare CdZnSSechaIcogenide thin films by simple, cost effective arrested precipitation technique (APT). The films were obtained in a chemical bath maintained at 55±5"C temperature, pH 10.8±0.2 and deposition time 90 min. The obtained thin films were thoroughly characterized paying particular attention to their structural, compositional, morphological and optical properties. The surface morphology and composition of as deposited thin films are studied by using Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDS). SEM micrographs reveal non-uniform distribution and nearly spherical grains. The X-ray diffraction pattern showed that highly textured CdZnSSe films with hexagonal structure. The optical absorption spectra show band gap value 2.12 eV.

Research paper thumbnail of Chemosynthesis, characterization and PEC performance of CdZn(SSe) 2 thin films by arrested precipitation technique (APT

In the present work, we have used simple, cost effective arrested precipitation technique (APT) t... more In the present work, we have used simple, cost effective arrested precipitation technique (APT) to deposit CdZn(SSe) 2 thin films. Preparative conditions were optimized during the initial stage of experimentation to obtain good quality CdZn(SSe) 2 thin films. The as-deposited film was studied for its structural, morphological, optical, and compositional analysis by XRD, SEM, UV-Vis-NIR spectrophotometer and EDSanalysis techniques respectively. XRD analysis revealed that the film was polycrystalline in nature and exhibit hexagonal crystal structure. The SEM micrograph shows the formation of spherical surface morphology. EDS results confirm the presence of Cd, Zn, S and Se elements in the synthesized thin film. The band gap value of thin film was calculated from the absorption spectra which is found to be 1.8 eV. From J–V measurements, photo-conversion efficiency is found to be 0.07%.

Research paper thumbnail of Time dependent facile hydrothermal synthesis of tio2 nanorods andtheir photoelectrochemical applications 2157 7439 S

In the present investigation, we report facile hydrothermal synthesis of TiO 2 nanorods with high... more In the present investigation, we report facile hydrothermal synthesis of TiO 2 nanorods with high density rutile phase on Transparent Conducting Oxide (TCO) for enhanced solar cell application. The structural, optical, morphological, compositional and electrochemical properties are investigated by detailed XRD, UV-Vis-NIR spectrophotometer, FESEM, TEM, EDAX, XPS and photoelectrochemical studies. It is demonstrated that, the deposited TiO 2 thin film shows pure rutile phase with tetragonal crystal structure. Optical spectra showed strong light absorption in UV region and FESEM images confirm the time dependent growth of TiO 2 nanorods. EDAX and XPS Spectra confirm the formation of pure TiO 2 nanorods. Photoelectrochemical performance with respect to time dependent growth of TiO 2 nanorods showed highest photoconversion efficiency ɳ = 5.1%.

Research paper thumbnail of Chemistry Raghunath K. Mane

In the present investigation, we have synthesized nanocrystalline cadmium sulphoselenide Cd(SSe) ... more In the present investigation, we have synthesized nanocrystalline cadmium sulphoselenide Cd(SSe) thin films on ultrasonically cleaned bare and FTO coated glass substrate using facile, cost effective arrested precipitation technique (APT) at different time intervals (1h,1.5h, 2h and 2.5h). The absorption spectrum shows a strong absorption in the 300-1100 nm wavelength range with band gap variation in the range of 2.05 eV to 1.87 eV. The X-ray diffraction (XRD) patterns shows nanocrystalline nature with crystallite size 58 nm to 76 nm and exhibits pure hexagonal crystal structure. The scanning electron microscopy (SEM) demonstrates formation of well adherent, pinhole free thin films with mixed nanosphere nanopetal like morphology. Energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS) showed that the composition of Cd(SSe) thin films is good agreement with stoichiometry. Finally these prepared thin films tested for photoelectrochemical (PEC) performance in sulphide / polysulphide electrolyte and results are

Research paper thumbnail of Novel synthetic route for the synthesis of ternary Cd(SSe) photoelectrode and their photoelectrochemical application

In the present investigation, we have synthesized nanocrystalline cadmium sulphoselenide Cd(SSe) ... more In the present investigation, we have synthesized nanocrystalline cadmium sulphoselenide Cd(SSe) thin film photoelectrodes on ultrasonically cleaned bare and fluorine doped tin oxide coated glass substrate using facile, cost effective and extremely convenient arrested precipitation technique at different time intervals (1, 1.5, 2 and 2.5 h). Optical, structural, morphological, compositional and photoelectrochemical (PEC) properties were investigated as function of deposition time. The synthesized films were characterized by UV–Vis-NIR spectrophotometer, X-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), Energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). Optical absorption spectrum shows a strong absorption in the wavelength range 300–1100 nm with band gap variation in the range of 2.05–1.87 eV. The XRD patterns shows nanocrystalline nature with crystallite size 58–76 nm and exhibits pure hexagonal crystal structure. The SEM micrograph demonstrates formation of well adherent, pin-hole free thin films with nanosphere, nanopetal like morphology which is finally modified into flowerlike morphology. Transmission electron microscopy (TEM) and HRTEM results confirm the nanocrystalline nature and selected area electron diffraction pattern reveals hexagonal crystal structure of deposited Cd(SSe) thin films. EDS and XPS showed that the composition of Cd(SSe) thin films was of good stoichiometry. Finally these prepared photo-electrodes were tested for their PEC performance in sul-phide/polysulphide electrolyte and promising results were found.

Research paper thumbnail of Development of CdZn(SSe) 2 thin films by using simple aqueous chemical route: Air annealing

In the present investigation we have successfully depositedCdZn(SSe) 2 thin films by using facile... more In the present investigation we have successfully depositedCdZn(SSe) 2 thin films by using facile self organised Arrested Precipitation Technique (APT).Preparative conditions were optimized during initial stage of experimentation to obtain good quality CdZn(SSe) 2 thin film.The resulted thin film was annealed in air at 373K for 1hr. FurtherOptical, structural, morphological and compositional properties of annealed thin filmswere investigated.The optical band gap value of thin film was estimated from the absorption spectrum which is found to be 1.85 eV. X-ray diffraction (XRD) study reveals that grown CdZn(SSe) 2 thin film was nanocrystalline with hexagonalcrystal structure.The SEM micrograph shows the formation of layered structure containing dense layer covered by uniform distribution of spherical grains. Energy dispersive X-ray (EDS) analysis confirm the presence of Cd, Zn, S and Se elements in the synthesized and annealed thin film. The film was obtained with a well-defined composition, very close to the expected atomic percentage.

Research paper thumbnail of Low temperature simple aqueous phase chemical synthesis and characterization of ZnO thin films

Zinc oxide (ZnO) nanorods were successfully deposited on the glass and fluorine doped tin oxide c... more Zinc oxide (ZnO) nanorods were successfully deposited on the glass and fluorine doped tin oxide coated glass substrate in an aqueous alkaline medium using zinc acetate, ethylene diamine, hexamethylene tetraamine and ethanol by simple chemical reflux method at low temperature. An Optical, structural, morphological compositional and photoelectrochemical (PEC) properties of ZnO thin films were investigated. Optical absorption study of the sample shows band gap value 3.24 eV. The X-ray diffraction (XRD) pattern indicates that the deposited material is nanocrystalline and nanorods formation takes place along (002) plane having hexagonal wurtzite crystal structure. The scanning electron microscopy (SEM) images demonstrate existence of hexagonal nanorods with average50nm lengths and 10 nm diamete.The X-ray photoelectron spectroscopy (XPS) study confirms well composed thin film formation. The PEC study revel that material exhibit photo conversion efficiency 1.84 % for solar cell application.

Research paper thumbnail of Synthesis and characterization of highly ordered nanosized PbS thin films: modified silar

In the current status, we have successfully synthesized lead sulfide (PbS) thin films using a mod... more In the current status, we have successfully synthesized lead sulfide (PbS) thin films using a modified successive ionic layer absorption and reaction (SILAR) method. The synthesized film was characterized using UV-Vis-NIR spectrophotometer, X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) techniques for optical, structural and morphological properties. Opto-structural study demonstrates that synthesized thin film has a pure crystal structure. The surface morphology study indicates a nanospherical surface morphology without pinhole on the substrate surfaces. Overall study clearly demonstrates that the synthesized PbS thin film by SILAR method have great potential for sensitization of oxide microstructure.