Applications of nanomaterials in the different fields of photosciences

Mandal, Gopa; Ganguly, Tapan

doi:10.1007/s12648-011-0149-9

Cited by 99 publications

(16 citation statements)

References 95 publications

(84 reference statements)

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“…For these reasons SnO 2 was spotlighted in many numerous applications such as potential anode in lithium ion batteries [5], solar cells [6], gas sensors [7,8], varistors [9] and photocatalysis [ 10]. Various experimental techniques were adopted to fabricate SnO 2 thin films depending on kind of application such as, rf sputtering [11], sol-gel [12],pulsed laser deposition [13], successive ionic layer adsorption and reaction SILAR [14], electron beam evaporation technique [15],chemical vapor deposition [16] and spray pyrolysis [17,18].…”

Section: Introductionmentioning

confidence: 99%

Molar Concentration Effects on the Optical and Structural Properties of Nanostructural SnO<sub>2</sub> Thin Films

Habubi

Abood

Algamel

2016

ILCPA

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Thin films of nanostructured SnO 2 with different molarites were prepared by chemical spray pyrolysis technique. XRD analysis reveals that all the films were tetragonal polycrystalline with a preferred orientation along (110) plane. AFM measurements indicate that the value of the grain size for 0.05 M, 0.1 M and 0.15 M were 111nm, 78 nm and 58 nm respectively. SEM micrograph proved the existence of small cracks on the film surface, EDS confirmed the composition percentage ratio of Sn and O 2 and no trace of impurities could be detected. PL spectra gives the indication about optical energy gap and the effect of concentration on it which appeared as a blue shift. The transmittance was studied for the deposited thin films ,identifying that the transmittance decreases by the increase in molarity. The value of the optical energy gap of the deposited thin films was increased upon increasing molar concentration due o quantum confinement effect. The Urbach energy was also studied, their values decrease as the molar concentration increase.

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Section: Introductionmentioning

confidence: 99%

Molar Concentration Effects on the Optical and Structural Properties of Nanostructural SnO<sub>2</sub> Thin Films

Habubi

Abood

Algamel

2016

ILCPA

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“…Nanostructured semiconductors of group II-VI are important materials because of their potential applications in various fields such as in gas sensors, imaging, solar cells, photoconductors, biological detection, UV sensors, short-wavelength laser diodes and various luminescence devices [1][2][3]. Nanostructured CdS and ZnS films are extensively used in various optoelectronic devices and photoconducting cells [4,5].…”

Section: Introductionmentioning

confidence: 99%

Study of structural and optical properties of chemically synthesized nanostructured cadmium zinc sulphide films for band gap tunability

Mochahari

Sarma

2015

Indian J Phys

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Nanostructured cadmium zinc sulphide films have been deposited onto cleaned glass substrates by chemical bath deposition method at room temperature using polyvinyl alcohol as capping agent. X-ray diffraction analysis confirms the formation of cubic-phase cadmium zinc sulphide films. Crystallite size obtained from the calculation of Scherrer's formula and Williamson-Hall plot as well as size-strain plot is found to decrease with the increase in zinc concentration. The films have very high dislocation density of the order of 10 16 m -2 , whereas the strain is of the order of 10 -3 . Scanning electron microscopic image reveals that the particles are agglomerated to form nanoclusters and energy-dispersive X-ray analysis confirms that films are composed of cadmium, zinc and sulphur. High-resolution transmission electron microscopic image reveals that the shape of the particles is nearly spherical, uniformly distributed. Selected-area electron diffraction pattern supports the formation of cubic phase of the film. Optical absorption peaks of the films shift towards lower wavelength side and their optical band gap increases with the increase in zinc concentration. The increase in zinc concentration enhances the photoluminescence emission intensity, whose emission is in the green region of visible spectrum.

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“…Nanomaterials have received much attention due to their unique properties and various applications which differ from those bulk [1][2][3][4][5]. Among these, the magnetic nanomaterials are more attractive because of their medical, electronic and recording applications.…”

Section: Introductionmentioning

confidence: 99%

The Variation of Magnetic Properties of Nickel Ferrite by Annealing

Moradmard¹,

Shayesteh²

2015

mst

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Nickel ferrite nanoparticles were synthesized by Co-precipitation method. The prepared powder was annealed at 500℃, 700℃ and 900℃. XRD analysis was used for composition and structure investigation. The detection and confirmation of the chemical bond in spinel ferrites were investigated by Fourier transmission infrared spectra (FTIR). Also the magnetic properties of the samples were measured by using a vibrating sample magnetometer (VSM). The XRD analysis revealed a pure ferrite phase with high crystallinity. The average crystallite size calculated by Sherrer's equation resulted in variation crystallite size from 9 to 21 nm depending upon the annealing temperature of the samples. FTIR analysis shows the presence of two vibrational bonds between 400-650 cm-1 corresponding to metal-oxygen interaction at tetrahedral and octahedral sites, respectively. Increasing the annealing temperature gave rise to the enhancement of saturation magnetization from 6 to 31emu/gr and the variation of coercivity between 2 and 80Oe.

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Applications of nanomaterials in the different fields of photosciences

Cited by 99 publications

References 95 publications

Molar Concentration Effects on the Optical and Structural Properties of Nanostructural SnO<sub>2</sub> Thin Films

Molar Concentration Effects on the Optical and Structural Properties of Nanostructural SnO<sub>2</sub> Thin Films

Study of structural and optical properties of chemically synthesized nanostructured cadmium zinc sulphide films for band gap tunability

The Variation of Magnetic Properties of Nickel Ferrite by Annealing

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