Influence of substrate temperature and Cobalt concentration on structural and optical properties of ZnO thin films prepared by Ultrasonic spray technique

Benramache, Said; Benhaoua, Boubaker

doi:10.1016/j.spmi.2012.06.005

Cited by 94 publications

(38 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, single significant (100) diffraction peak, with height intensity, was observed for the ZnO film which indicate that the ZnO film have preferential a-axis orientation perpendicular to the crystallographic plans (100). These results can be explained as it was expressed in the literatures [20,23,24,27].…”

supporting

confidence: 72%

“…The latter is a region of strong transparency. However, the range occurs between 3.25-3.40 eV is the region of the absorption in the layers due to the transition between the valence band and the conduction band [20], as shown in Fig. 2, in this region the transmission decreased because of the onset fundamental absorption.…”

Section: Methodsmentioning

confidence: 94%

“…We have studied the effect of substrate temperature on optical, electrical and structural properties of ZnO films. General study on the effect of substrate temperature from 300 to 400 °C were studied as in others paper [20], around 350 °C. The main goal for this research is to find optimum information on temperature which gives highly semiconducting properties of undoped ZnO thin films.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Substrate Temperature Effect on Optical property of ZnO Thin Films

Rahal¹,

Benramache

Benhaoua³

2014

Self Cite

View full text Add to dashboard Cite

Abstract. The transparent conducting ZnO thin films were deposited on glass substrate by ultrasonic spray technique. The optical, electrical and structural properties of the ZnO thin films were studied as a function of the substrate temperatures in the range of 300 to 400 °C. The as deposited film exhibit a hexagonal structure wurtzite and (101) oriented.The value of grain size G = 28 nm is measured of ZnO film at 350 °C. All the films having high transparency in the visible region, the band gap energy decreased from 3.44 to 3.29 eV with increasing the substrate temperatures from 300 to 400 °C, respectively according to the Burstein-Moss effect (blue shift of Eg). The Urbach energy decreased reaching to minimum at 350 °C; indicating to decrease of the defects. The electrical resistivity of the films at 350 °C is 50 Ω.cm. A systematic study on the influence of the substrate temperatures on the optical, electrical and structural properties of ZnO thin films deposited by ultrasonic spray has been reported.

show abstract

supporting

confidence: 72%

Section: Methodsmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Substrate Temperature Effect on Optical property of ZnO Thin Films

Rahal¹,

Benramache

Benhaoua³

2014

Self Cite

View full text Add to dashboard Cite

show abstract

“…In this study, the undoped and doped ZnO samples were deposited on glass substrates using the ultrasonic spray and spray pyrolysis techniques. In general, the depositions were performed at a substrate temperature of 350 ∘ C. The optical band gap energy and the Urbach energy of undoped and Bi, Sn and Fe doped ZnO thin films were taken from the literature [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44], which studied the effect of precursor molarity, doping level and substrate temperature on structural, electrical and optical properties of undoped and doped ZnO thin films with Bi, Sn and Fe. Table 1 shows the typical procedures of experimental research designs, which used zinc as a precursor.…”

Section: Experimental and Methodsmentioning

confidence: 99%

The calculation of the optical gap energy of ZnXO (X = Bi, Sn and Fe)

Benramache

Benhaoua

2016

Open Physics

Self Cite

View full text Add to dashboard Cite

Abstract:In this paper, a new mathematical model has been developed to calculate the optical properties of nanomaterials a function of their size and structure. ZnO has good characterizatics in optical, electrical, and structural crystallisation; We will demonstrate that the direct optical gap energy of ZnO films grown by US and SP spray deposition can be calculated by investigating the correlation between solution molarity, doping levels of doped films and their Urbache energy. A simulation model has been developed to calculate the optical band gap energy of undoped and Bi, Sn and Fe doped ZnO thin films. The measurements by thus proposed models are in agreement with experimental data, with high correlation coefficients in the range 0.94-0.99. The maximum calculated enhancement of the optical gap energy of Sn doped ZnO thin films is always higher than the enhancement attainable with an Fe doped film, where the minimum error was found for Bi and Sn doped ZnO thin films to be 2,345 and 3,072%, respectively. The decrease in the relative errors from undoped to doped films can be explained by the good optical properties which can be observed in the fewer number of defects as well as less disorder.

show abstract

“…From Table 1 can observed that the a 0 -a of (111) was decreased after doping by Na, which can be explained by the decrease in the defects. In order to study the crystalline structure, the crystallite size G of (111) plane was calculated by the full width at halfmaximum (FWHM) and diffraction peak of (111) plane of Na doped NiO films, as calculated by Scherer's equation 16 :…”

Section: Effect Of Na Doping On Crystalline Structurementioning

confidence: 99%

Preparation and Characterizations of Monocrystalline Na Doped NiO Thin Films

et al. 2018

Self Cite

View full text Add to dashboard Cite

In the present work, the effect of Na doping on optical, structural and electrical properties of Na doped NiO thin films were studied. The spray pneumatic method was used to deposit the Na doped NiO thin films in the range 0 to 5 wt.%, it are investigated at a substrate temperature of 420 °C with NiO solution 0.1 M. Firstly in the XRD specra, as found that a only (111) peak was observed for Na doped NiO thin film indicate that the Na doped NiO thin films a monocrystalline in nature with cubic structure. The maximum crystallite size of Na doped NiO thin films was 18.90 nm at 3 wt.%. Secondary, the optical transmissions spectra Na doped NiO thin films having a high transparency with comparing to undoped film in visible region. The band gap energy was decreased after doping by Na and reaching a minimum value is 3.53 eV at 2 wt.%. The minimum value of Urbach energy was 0.312 eV, it is obtained at 3 wt.%. In the end, the minimum electrical resistance of the Na doped NiO films was located at 5 wt.%. The optimum Na doping amount is achieved at 3 at %.

show abstract

Influence of substrate temperature and Cobalt concentration on structural and optical properties of ZnO thin films prepared by Ultrasonic spray technique

Cited by 94 publications

References 24 publications

Substrate Temperature Effect on Optical property of ZnO Thin Films

Substrate Temperature Effect on Optical property of ZnO Thin Films

The calculation of the optical gap energy of ZnXO (X = Bi, Sn and Fe)

Preparation and Characterizations of Monocrystalline Na Doped NiO Thin Films

Contact Info

Product

Resources

About