Ellipsometric spectroscopy study of cobalt oxide thin films deposited by sol–gel

2006 ◽  
Vol 90 (15) ◽  
pp. 2523-2531 ◽  
Author(s):  
E. Barrera-Calva ◽  
J.C. Martínez-Flores ◽  
L. Huerta ◽  
A. Avila ◽  
M. Ortega-López
Keyword(s):  
Thin Films ◽  
Cobalt Oxide ◽  
Sol Gel ◽  
Spectroscopy Study ◽  
Oxide Thin Films

Improvement of structural, optical and magnetic properties of cobalt oxide thin films by doping with iron

2021 ◽  
Vol 127 (7) ◽  
Author(s):  
Ayse Kucukarslan ◽  
Esra Kus ◽  
Emrah Sarica ◽  
Idris Akyuz ◽  
Vildan Bilgin ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Cobalt Oxide ◽  
Oxide Thin Films ◽  
Optical And Magnetic Properties

The effect of the withdrawal speed on properties of nickel oxide thin films

2019 ◽  
Vol 234 (10) ◽  
pp. 647-655
Author(s):  
Zohra Nazir Kayani ◽  
Atiqa Aslam ◽  
Rabia Ishaque ◽  
Syeda Nosheen Zahra ◽  
Hifza Hanif ◽  
...  
Keyword(s):  
Thin Films ◽  
Nickel Oxide ◽  
Band Gap ◽  
Sol Gel ◽  
Average Crystallite Size ◽  
Dip Coating ◽  
Oxide Thin Films ◽  
Withdrawal Speed ◽  
Sem Micrograph ◽  
Nickel Oxide Thin Films

Abstract Nickel oxide thin films have been prepared by sol-gel dip-coating technique on glass substrate. It is shown that nickel oxide thin films have poly crystalline nature. Nickel oxide thin films exhibit high transmission (39–85%) in the wavelength range of 400–900 nm, strong absorption between 300 and 400 nm wavelengths and decrease of band gap values are in the range 3.69–3.27 eV with increase of withdrawal speed. High band gap at low withdrawal speed is because of the small average crystallite size, which decreases with increase in withdrawal speed. The SEM micrograph shows cubic crystallites and surface of thin films become dense, smooth and homogeneous with an increase in withdrawal speed. Assessment of nickel oxide deposition conditions provides gateway for effective and cheap solar cells.

Valence control of cobalt oxide thin films by annealing atmosphere

2011 ◽  
Vol 257 (8) ◽  
pp. 3358-3362 ◽  
Author(s):  
Shijing Wang ◽  
Boping Zhang ◽  
Cuihua Zhao ◽  
Songjie Li ◽  
Meixia Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
Cobalt Oxide ◽  
Annealing Atmosphere ◽  
Oxide Thin Films ◽  
Valence Control

Electrochromic properties of nickel oxide thin films prepared by the sol-gel method

1995 ◽  
Author(s):  
Takeshi Miki ◽  
Kazuki Yoshimura ◽  
Yutaka Tai ◽  
Masato Tazawa ◽  
Ping Jin ◽  
...  
Keyword(s):  
Thin Films ◽  
Nickel Oxide ◽  
Sol Gel ◽  
Oxide Thin Films ◽  
Gel Method ◽  
Electrochromic Properties ◽  
Sol Gel Method ◽  
Nickel Oxide Thin Films

Boron-doped cobalt oxide thin films and its electrochemical properties

2016 ◽  
Vol 30 (27) ◽  
pp. 1650343 ◽  
Author(s):  
S. Kerli
Keyword(s):  
Thin Films ◽  
Cobalt Oxide ◽  
Performance Test ◽  
Spray Deposition ◽  
Boron Doping ◽  
Optical Measurements ◽  
Oxide Thin Films ◽  
Boron Doped ◽  
Electrochemical Supercapacitor ◽  
Supercapacitor Performance

The cobalt oxide and boron-doped cobalt oxide thin films were produced by spray deposition method. All films were obtained onto glass and fluorine-doped tin oxide (FTO) substrates at 400[Formula: see text]C and annealed at 550[Formula: see text]C. We present detailed analysis of the morphological and optical properties of films. XRD results show that boron doping disrupts the structure of the films. Morphologies of the films were investigated by using a scanning electron microscopy (SEM). Optical measurements indicate that the band gap energies of the films change with boron concentrations. The electrochemical supercapacitor performance test has been studied in aqueous 6 M KOH electrolyte and with scan rate of 5 mV/s. Measurements show that the largest capacitance is obtained for 3% boron-doped cobalt oxide film.

Tuning the magnetism of epitaxial cobalt oxide thin films by electron beam irradiation

2017 ◽  
Vol 1 (2) ◽  
Author(s):  
Q. Q. Lan ◽  
X. J. Zhang ◽  
X. Shen ◽  
H. W. Yang ◽  
H. R. Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
Electron Beam ◽  
Cobalt Oxide ◽  
Electron Beam Irradiation ◽  
Beam Irradiation ◽  
Oxide Thin Films
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