Characterization of nickel oxide films deposited at different substrate temperatures using spray pyrolysis

Kamal, H.; Elmaghraby, Elsayed K.; Ali, Syed Kamaruzaman Syed; Abdel-Hady, K.

doi:10.1016/j.jcrysgro.2003.10.090

Cited by 128 publications

(68 citation statements)

References 29 publications

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“…This type of observation is reported for many oxide films prepared by the spray pyrolysis technique [21]. The low value of thickness obtained at 325°C may be attributed to water loss [22] or removal of interlayer water with consequent formation of compact PbO films. Above 325°C, the further transport of precursor droplets results in piling up of more energetic PbO atoms in the empty sites created due to the removal of interlayer water and hence, the thickness starts increasing.…”

Section: Methodssupporting

confidence: 63%

Role of substrate temperature on the growth mechanism and physical properties of spray deposited lead oxide thin films

Suganya¹,

Balu²,

Usharani³

2014

Materials Science-Poland

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Thin films of lead oxide were synthesized by cost effective spray pyrolysis technique at different substrate temperatures on glass substrates. Effect of substrate temperature on the growth mechanism and physical properties of the films was investigated. All the films were polycrystalline in nature with tetragonal structure corresponding to α-PbO. The films coated at 225°C and 275°C were (1 0 1) oriented, while the films deposited at 325°C and 375°C were (0 0 2) oriented. Above 375°C, the pure tetragonal nature deteriorated and the peaks corresponding to orthorhombic phase were observed. The band gap value was found to be in the range of 2.3 to 2.62 eV. All the films had a resistivity of the order of 10 3 ohm-cm. A minimum resistivity of 0.0191 × 10 3 ohm-cm was obtained for the film coated at 325°C. The activation energy increased with increase in substrate temperature.

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Section: Methodssupporting

confidence: 63%

Role of substrate temperature on the growth mechanism and physical properties of spray deposited lead oxide thin films

Suganya¹,

Balu²,

Usharani³

2014

Materials Science-Poland

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“…However, Kamal et al [20] have shown that the formation of Sn (OH) 2 is more probable at higher substrate temperature (420°C) than the one used in the present work (350°C).…”

Section: Emm-fm2011contrasting

confidence: 55%

“…During spray pyrolysis of SnCl 2 6H 2 O the reaction process corresponds to a heat decomposition of tin chloride to tin oxide in the presence of water and air oxygen. The deposited films may have disordered Sn(OH) 2 structure or crystalline SnO 2 structure according to the following reactions [20] [20].…”

Section: Emm-fm2011mentioning

confidence: 99%

“…Several methods have been used to prepare tin oxide thin films such as sputtering [8,9,[10][11], electron beam evaporation [12], sol gel a e-mail : fatima_dahou@yahoo.fr [13], dip coating, spin coating, electro deposition [14], chemical bath deposition [15,16,17] and also spray pyrolysis [15,[18][19]. It has been shown that SnO 2 films with good electronic properties can be achieved by spray pyrolysis depending on growing parameters such as precursor concentration [19] and substrate temperature [20].Smart windows, dye sensitized solar cells need, for economical reason, cheap deposition technique. In the case of n-type transparent conductive oxides a ''perfume atomizer'' available in cosmetic shop has been used with success [21,22].…”

Section: Introductionmentioning

confidence: 99%

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Realization of tin oxide like anode for the manufacture of the organic solar cells

Mohammed-Krarroubi

Dahou

Barkat

et al. 2012

EPJ Web of Conferences

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Abstract.The transparent oxides such as SnO 2 , In 2 O 3 and ZnO continue to arouse a private interest for their various applications. The objective of the various studies being to carry out the layers which are simultaneously most transparent and most conducting possible. Thus in the field of the solar spectrum, the transmission of the layers must be higher than 80% and their conductivity exceeding 10 3 (Ohm.cm) -1 .Their transparency which is related to the value of their forbidden band must be higher than 3.7 e V. Their electric properties as for them depend on the composition of the layers and a possible doping. In this work, one characterized layers of SnO 2 deposited by chemical pulverization, one carried out measurements by, electronic scan microscopy, diffraction of x-rays and also of the optical measurements and electronic. It results from it that the layers are conducting and transparent in the visible one but they are relatively rough, following its characterizations, one carried out organic photovoltaic cells using these layers of SnO 2 and also of the commercial ITO like anode in these components. More particularly one was interested in the influence of the presence of a fine layer of gold between the anode and organic material.

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“…As shown in Fig. 5a, by increasing the T sub from 300°C to 500°C, at constant vanadium concentration 0.1 mol/L and the solution spray rate 10 mL/min, the obtained energy band gap value E g reduces from 2.46 eV to 2.22 eV, which is related to the grain size growth and/or multi phase nature of the films [16]. Figure 5b reveals that by increasing vanadium concentration from 0.1 mol/L to 0.2 mol/L at T sub = 450°C and the solution spray rate 10 mL/min, the E g is increased slightly from 2.36 eV to 2.4 eV because of the decrease of grain size.…”

Section: Optical Propertiesmentioning

confidence: 89%

Study of structural, electrical and optical properties of vanadium oxide condensed films deposited by spray pyrolysis technique

et al. 2013

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Vanadium oxides condensed films are prepared on glass substrates, using spray pyrolysis (SP) technique. The effects of substrate temperature, vanadium concentration in initial solution and the solution spray rate on the nano-structural, electrical, and optical properties of deposited films were investigated. Characterizations of the samples were performed using X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV-Vis spectroscopy methods. The type and concentration of the charge carriers were determined and measured by Hall effect experiment. XRD patterns showed that the prepared films had polycrystalline structure, mostly tetragonal b-V 2 O 5 and V 4 O 9 phases with the preferred orientation along (200) direction. The Hall effect experiment revealed that all samples were n-type, except the ones deposited at substrate temperatures T sub = 300°C and T sub = 450°C, vanadium concentration 0.1 mol/L and solution spray rate 10 mL/min. The charge carrier concentrations obtained were in the range 10 16 -10 18 cm -3 . The lowest sheet resistance (R s ) was obtained for the samples prepared at T sub = 450°C, vanadium concentration 0.05 mol/L and solution spray rate 10 mL/min. It was also found that the optical transparency of the samples changed from 20% to 75% and the optical band gap of the samples was from 2.22 eV to 2.58 eV, depending on the deposition conditions.

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Characterization of nickel oxide films deposited at different substrate temperatures using spray pyrolysis

Cited by 128 publications

References 29 publications

Role of substrate temperature on the growth mechanism and physical properties of spray deposited lead oxide thin films

Role of substrate temperature on the growth mechanism and physical properties of spray deposited lead oxide thin films

Realization of tin oxide like anode for the manufacture of the organic solar cells

Study of structural, electrical and optical properties of vanadium oxide condensed films deposited by spray pyrolysis technique

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