Nanostructured ZnO thin films prepared by sol–gel spin-coating

Heredia, E.; Bojorge, Claudia Daniela; Casanova, J.R.; Cánepa, Horacio Ricardo; Craievich, A. F.; Kellermann, G.

doi:10.1016/j.apsusc.2014.08.046

Cited by 32 publications

(15 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The band gap value of anatase-TiO 2 is almost similar to that of ZnO nanomaterials (3.3 eV) [6]. Also, as in the case of TiO 2 nanomaterials, ZnO nanomaterials are used in many applications such as: gas and humidity sensors, optoelectronic devices, and UV detectors [12].…”

Section: Introductionmentioning

confidence: 96%

Structural and electrical properties of TiO2/ZnO core–shell nanoparticles synthesized by hydrothermal method

Vlăzan

Ursu

Irina-Moisescu

et al. 2015

Materials Characterization

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 96%

Structural and electrical properties of TiO2/ZnO core–shell nanoparticles synthesized by hydrothermal method

Vlăzan

Ursu

Irina-Moisescu

et al. 2015

Materials Characterization

View full text Add to dashboard Cite

“…Nanostructured ZnO have been synthesized by distinct methods, such as ultrarapid sonochemical 6 , hydrothermal synthesis 7 , microwave assisted irradiate 8 , sol-gel 9,10 , and aqueous solution methods 11 . In all these cases, the materials properties are strongly dependent on the synthesis parameters.…”

Section: Introductionmentioning

confidence: 99%

Annealing Effects on the Structural and Optical Properties of ZnO Nanostructures

et al. 2018

View full text Add to dashboard Cite

ZnO nanostructures were synthesized by a proteic sol-gel method, using zinc nitrate hexahydrate and gelatin as precursors. Size and shape evolution of ZnO nanostructures were achieved by annealing temperature in the range 250-1000 ºC. The crystalline structure, morphology and optical properties of the ZnO nanoparticles were characterized by X-Ray Diffraction (XRD), Raman Spectroscopy (RS), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), and room temperature Photoluminescence (PL). The result of structural characterization shows the formation of platelets and nanorods in the micro-scale and ZnO nanostructures with high quality hexagonal wurtzite crystal. Sharp peaks in RS after annealing temperature, related to wurtzite structure, were observed corroborating with XRD and TEM measurements. Room temperature PL spectra showed two contribution bands which peaked at ~380 nm, originating from the recombination of free excitons, and ~520 nm corresponding to the impurities and structural defects, like oxygen vacancies and zinc interstitial. The effects of annealing temperature in the structural and optical properties are detailed and the results compared among the experimental techniques. The high quality of the samples obtained by an alternative organic precursor method opens a low-cost route to technological applications of zinc oxide.

show abstract

“…[24][25][26][27][28] Those materials were also used in optical technology. Moreover, the deposited ZnO nanopowders 29,30 and ZnO nanoparticles doped by different metal ions such as, manganese 31 or copper exhibited photoluminescence bands, and the emission intensity increased with increase in doping up to a certain percentage of Cu 2+ (5%).…”

Section: Introductionmentioning

confidence: 99%

Copper(II) Schiff base complexes and their mixed thin layers with ZnO nanoparticles

2016

View full text Add to dashboard Cite

Cu(II) complexes with Schiff bases derived from ethylenediamine (en) and 2-pyridinecarboxaldehyde (pyca), 2,5-dimethoxybenzaldehyde (dmbaH) or 4-imidazolecarboxaldehyde (4Him) were obtained and studied by elemental analysis, UV-VIS and IR spectra. Zinc oxide was synthesized using a simple homogeneous precipitation method with zinc acetate as a starting material. Thin layers of the studied Cu(II) complexes were deposited on Si(111) or ZnO/Si(111) substrates by a spin coating method and characterized with a scanning electron microscopy (SEM/EDS), atomic force microscopy (AFM) and fluorescence spectroscopy. For Cu(II) layers the most intensive fluorescence bands due to intra-ligand transitions were observed between 462 and 503 nm. The fluorescence intensity of thin layers was corelated to the rotation speed. In the case of the [Cu(II)(en(4Him) 2 )Cl 2 ](2a)/ZnO/Si and [Cu(en(dmbaH) 2 )Cl 2 ](3a)/ZnO/Si layers the quenching of the emission band from ZnO at 440 nm (λ ex = 330 nm) associated with various intrinsic or extrinsic lattice defects was noted.

show abstract

Nanostructured ZnO thin films prepared by sol–gel spin-coating

Cited by 32 publications

References 15 publications

Structural and electrical properties of TiO2/ZnO core–shell nanoparticles synthesized by hydrothermal method

Structural and electrical properties of TiO2/ZnO core–shell nanoparticles synthesized by hydrothermal method

Annealing Effects on the Structural and Optical Properties of ZnO Nanostructures

Copper(II) Schiff base complexes and their mixed thin layers with ZnO nanoparticles

Contact Info

Product

Resources

About