Influence of Fe-doping on the Stress Behaviour in ZnO thin Films Synthesized by Electrochemical Method

2017 ◽  
Vol 3 (2) ◽  
pp. 27-31 ◽  
Author(s):  
K. Al-heuseen ◽  
M. Kh. Alquran
Keyword(s):  
Thin Films ◽  
Electrochemical Method ◽  
Zno Thin Films ◽  
Fe Doping ◽  
Stress Behaviour

Influence of Fe-doping on the structural, optical and luminescent behavior of ZnO thin films deposited by spin coating technique

Vacuum ◽  
2017 ◽  
Vol 146 ◽  
pp. 478-482 ◽  
Author(s):  
Kartikey Verma ◽  
Babulal Chaudhary ◽  
Vijay Kumar ◽  
Vishal Sharma ◽  
Mahendra Kumar
Keyword(s):  
Thin Films ◽  
Spin Coating ◽  
Spin Coating Technique ◽  
Zno Thin Films ◽  
Fe Doping ◽  
Coating Technique ◽  
Luminescent Behavior

SYNTHESIS AND CHARACTERIZATION OF Fe–ZnO THIN FILMS FOR ANTIMICROBIAL ACTIVITY

2019 ◽  
Vol 26 (05) ◽  
pp. 1850197 ◽  
Author(s):  
SELMA M. H. AL-JAWAD ◽  
SABAH H. SABEEH ◽  
ALI A. TAHA ◽  
HUSSEIN A. JASSIM
Keyword(s):  
Thin Films ◽  
Doping Concentration ◽  
Optical Bandgap ◽  
Zno Thin Films ◽  
Zno Films ◽  
Fe Doping ◽  
E Coli ◽  
Average Grain Size ◽  
Vis Spectroscopy ◽  
Doped Zno

Pure and Fe-doped zinc oxide (ZnO) sol–gel thin films were deposited by spin-coating process. Pure ZnO and Fe–ZnO films, containing Fe of 2–8[Formula: see text]wt.%, were annealed at 500∘C for 2[Formula: see text]h. All prepared thin films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM) and UV–visible (UV–vis) spectroscopy. XRD studies show the polycrystalline nature with hexagonal wurtzite structure of pure ZnO and Fe–ZnO thin films. The crystallite size of the prepared samples reduced with increasing Fe doping concentrations. AFM and SEM results indicated that the average grain size decreased as Fe doping concentration increased. The transmittance spectra were then recorded at wavelengths ranging from 300[Formula: see text]nm to 1000[Formula: see text]nm. The films produced yielded high transmission at visible regions. The optical bandgap energy of spin-coated films also decreased as Fe doping concentration increased. In particular, their optical bandgap energies were 3.75, 3.6, 3.5, 3.45 and 3.3 eV at 0-, 2-, 4-, 6- and 8-wt.% Fe concentrations, respectively. Antibacterial activities of pure ZnO and Fe–ZnO against E. coli and S. aureus were evaluated by international recognized test (JIS Z 2801). The results showed that pure and Fe-doped ZnO thin films have antibacterial inhibition zone against E. coli and S. aureus. Gram-positive bacteria seemed be more resistant to pure and Fe-doped ZnO thin films than gram-negative bacteria. The test shows an incremental increase in antibacterial activity of the thin films when dopant ratio increased under UV light.

Optical and Electronic Analysis of Pure and Fe-Doped ZnO Thin Films Using Spectroscopic Ellipsometry and Kramers–Kronig Method

2019 ◽  
Vol 18 (01) ◽  
pp. 1850013 ◽  
Author(s):  
Maryam Motallebi Aghgonbad ◽  
Hassan Sedghi
Keyword(s):  
Thin Films ◽  
Band Gap ◽  
Spectroscopic Ellipsometry ◽  
Optical Band Gap ◽  
Band Gap Energy ◽  
Zno Thin Films ◽  
Fe Doping ◽  
Gap Energy ◽  
Optical And Electronic Properties ◽  
Doped Zno

In the present work, pure and Fe-doped ZnO thin films were deposited on glass substrates by sol–gel method. Zinc acetate and iron nitrate were used as the starting material and dopant source, respectively. The concentration of Fe doping was 6[Formula: see text]at.% and 8[Formula: see text]at.%. The optical and electronic properties of pure and Fe-doped ZnO thin films such as refraction index, extinction coefficient, dielectric function and optical band gap energy of the layers were obtained by spectroscopic ellipsometry method in the wavelength range of 300–900[Formula: see text]nm. The incidence angle of the layers kept 70[Formula: see text]. Also data obtained by Kramers–Kronig relations were used for comparison. The influence of Fe-doping concentration on the optical and electronic properties of thin films was studied. The transmittance data of ZnO thin films showed that 6[Formula: see text]at.% Fe-doped ZnO thin film has the highest transmittance value. Dielectric function of pure ZnO films was found to be higher compared with Fe-doped ones. Also it can be deduced from the results that Fe doping influences the optical band gap energy of thin films.

Investigation of Fe doping on the magnetic and optical properties of ZnO thin films

2018 ◽  
Vol 5 (3) ◽  
pp. 036418 ◽  
Author(s):  
Zohra N Kayani ◽  
Neha Yaseen ◽  
Saira Riaz ◽  
Shahzad Naseem
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Zno Thin Films ◽  
Fe Doping
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