Micro-structural characterization of annealed cadmium–zinc oxide thin films obtained by spray pyrolysis

Cruz-Gandarilla, F.; Morales‐Acevedo, Arturo; Vigil, O.; Hesiquio-Garduño, Miguel; Vaillant, L.; Contreras‐Puente, G.

doi:10.1016/s0254-0584(02)00395-4

Cited by 32 publications

(7 citation statements)

References 7 publications

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“…Optically, the films of cadmium oxide act as a selectively transmitting layer being transparent to the visible light and reflective to the thermal infrared radiation. CdO thick films have already been developed by various techniques such as spray pyrolysis [4], DC magnetron sputtering [5,6], solgel [7,8], pulsed laser deposition [9], sol-gel technique, etc. In this work, we have employed fast emerging screen printing technique to deposit CdO thick films.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and interpretation of screen-printed nanocrystalline CdO thick film for optoelectronic applications

et al. 2016

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The transparent conductive oxide CdO thick films are prepared by screen printing method followed by sintering route. The structural, optical and electrical properties of as-grown films are characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), Fourier transform infrared (FTIR), ultraviolet-visible (UV-VIS) and DC conductivity measurement techniques. XRD, SEM and AFM studies reveal that the film deposited is polycrystalline, single phase and granular in nature. The crystallite size from XRD pattern's most strong (111) peak calculated using Debye-Scherrer's formula is 30 nm. IR transmission spectrum exhibits Cd-O stretching and bending mode peaks at 831 and 672 cm-1 , respectively. Electrical properties were characterized by two-probe measurement in the temperature range between 300 and 400 K. Optical transmission spectroscopy and DC conductivity measurements have revealed the semiconducting nature of this film with direct band gap energy 2.53 and 0.29 eV activation energy and dc conductivity 4.5 9 10-7 ('Xcm)-1 .

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Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and interpretation of screen-printed nanocrystalline CdO thick film for optoelectronic applications

et al. 2016

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“…On the other hand, CdO is an n-type semiconductor with a well-established direct band gap at approximately 2.5 eV and resistivity 3 × 10 −3 Ω cm −1 [17]. [18], and CdOZnO [19] have recently received considerable attention, since they combine many benecial characteristics of its components. Besides, peroxides have many applications.…”

Section: Introductionmentioning

confidence: 99%

Optical Characterization of (CdO)_x(ZnO)_1-xComposite by Spray Pyrolysis Technique

2014

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Composite cadmium oxideszinc oxides, (CdO)x(ZnO)1−x, thin lms are grown with variable composition, x, by non-conventional spray pyrolysis technique from two separate cavities. X-ray diraction proves the formation of cadmium and zinc peroxides upon deposition. Further annealing in air causes a loss of crystallographic order in zinc oxide grains. Annealing does not aect the structure of cadmium peroxide. The optical constants are estimated by the Murmann exact equation from transmittance and reectance in the wavelength range between 400 and 2400 nm and show normal dispersion. Highest luminescent yield is assigned for samples with composition x = 0.5. Annealing causes increase in luminescence yield of (CdO)x(ZnO)1−x lms that could be explained in the framework of structural change.

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“…The cadmium (Cd) is a material of interest as it reduces the bandgap of ZnO with an improvement in other useful properties. There are also a number of methods used to deposit ZnCdO thin films such as molecular beam epitaxy [7], pulse laser deposition (PLD) [8], metal organic chemical vapor deposition (MOCVD) [9], electrochemical deposition [10], DC reactive magnetron sputtering [11], spray pyrolysis method [12], and RF magnetron sputtering [13], but the sol-gel spin coating process is most widely used because of its simplicity and low cost [14].…”

Section: Introductionmentioning

confidence: 99%

“…There has been a lot of literature available in which ZnCdO thin films with varying composition of cadmium has been prepared [2,4,12,[15][16][17]. In the literature, the different solvents have been reported for the sol-gel synthesis of various metal oxide films, but the detailed study for the CdZnO system have not been reported till today.…”

Section: Introductionmentioning

confidence: 99%

Structural, morphological and optical properties of sol gel processed CdZnO nanostructured films: effect of precursor solvents

Singh

Kumar

2013

Int Nano Lett

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Cadmium-doped zinc oxide (CZO) has been the potential candidate for the fabrication of low-cost transparent conductors having applications in energy conversion devices such as thin-film solar cells and light-emitting diodes. In this work, the effect of different precursor solvents on the structural, morphological, and optical properties of sol-gel spin-coated CZO films was investigated. The X-ray diffraction study has revealed the hexagonal wurtzite crystal structure with crystallite size ranging from 45 to 49 nm for these films. The surface morphology of these films was analyzed by the atomic force microscopy. The precursor solvent effect was also analyzed using the UV-vis spectroscopy and fluorescence spectroscopic techniques. All the prepared films show the larger values of optical transparency (>80%) along with the shift in the fundamental absorption edge and the direct optical gap was found to be between 3.14 and 3.19 eV. The highly intense band edge emission for the sample was synthesized using the 2-ethoxyethanol while the presence of other defect-related bands in the other samples has been observed. The change in the precursor solvent volatility influences the crystal structure to favor the change in the density/type of defect states in the bandgap is used to discuss the present results. The formation of highly porous films will be suitable for gas sensor applications while the larger value of optical transparency and lower surface roughness have their probable application as the transparent electrodes in optoelectronics.

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Micro-structural characterization of annealed cadmium–zinc oxide thin films obtained by spray pyrolysis

Cited by 32 publications

References 7 publications

Synthesis, characterization and interpretation of screen-printed nanocrystalline CdO thick film for optoelectronic applications

Synthesis, characterization and interpretation of screen-printed nanocrystalline CdO thick film for optoelectronic applications

Optical Characterization of (CdO)_x(ZnO)_1-xComposite by Spray Pyrolysis Technique

Structural, morphological and optical properties of sol gel processed CdZnO nanostructured films: effect of precursor solvents

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Micro-structural characterization of annealed cadmium–zinc oxide thin films obtained by spray pyrolysis

Cited by 32 publications

References 7 publications

Synthesis, characterization and interpretation of screen-printed nanocrystalline CdO thick film for optoelectronic applications

Synthesis, characterization and interpretation of screen-printed nanocrystalline CdO thick film for optoelectronic applications

Optical Characterization of (CdO)x(ZnO)1-xComposite by Spray Pyrolysis Technique

Structural, morphological and optical properties of sol gel processed CdZnO nanostructured films: effect of precursor solvents

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Optical Characterization of (CdO)_x(ZnO)_1-xComposite by Spray Pyrolysis Technique