Structural, Optical and Electrical Properties of Titanium Dioxide Thin Films with Different Molarity

2013 ◽  
Vol 667 ◽  
pp. 58-62 ◽  
Author(s):  
S.K.M. Maarof ◽  
Saifollah Abdullah ◽  
Mohamad Rusop Mahmood
Keyword(s):  
Thin Films ◽  
Titanium Dioxide ◽  
Electrical Properties ◽  
Sol Gel ◽  
Visible Region ◽  
Optical And Electrical Properties ◽  
A Value ◽  
Sol Gel Process ◽  
Coating Method ◽  
Titanium Dioxide Thin Films

Titanium dioxide, TiO2 is one of the semiconductor materials that can be produced in many ways, such as magnetron sputtering, CVD, and sol-gel process. This paper studied on the production of TiO2 by sol-gel method using titanium tetra (IV) isopropoxide, TTiP. The solution of TiO2 then deposited as a thin films onto glass substrate by spin-coating method. The purpose of this paper is to investigate the effect of molarity on the morphology, optical and electrical properties of the thin films. The effect on the morphology was observed by AFM. The electrical properties then observed by IV characteristic and finally on the optical properties were investigated by UV-Vis. The transmission obtained from UV-Vis showed that TiO2 thin films are decreased around 18% at higher molarity in a visible region. The bandgap also decrease at high molarity. Higher molarity of TiO2 in current-voltage characteristic gave a value of current density for 1.03×10-4 A/m2 and resistivity 1.95×107 Ωm.

scholarly journals Optical and electrical properties of sol-gel spin coated titanium dioxide thin films

2017 ◽  
Vol 225 ◽  
pp. 012021
Author(s):  
Anusuya Sahoo ◽  
A R Jayakrishnan ◽  
K Kamakshi ◽  
J P B Silva ◽  
K C Sekhar ◽  
...  
Keyword(s):  
Thin Films ◽  
Titanium Dioxide ◽  
Electrical Properties ◽  
Sol Gel ◽  
Optical And Electrical Properties ◽  
Titanium Dioxide Thin Films

Novel thin films of titanium dioxide particles synthesized by a sol-gel process

1995 ◽  
Vol 10 (12) ◽  
pp. 3068-3078 ◽  
Author(s):  
V.J. Nagpal ◽  
R.M. Davis ◽  
S.B. Desu
Keyword(s):  
Thin Films ◽  
Titanium Dioxide ◽  
Sol Gel ◽  
Particle Surface ◽  
Composite Films ◽  
Visible Region ◽  
Silicon Substrates ◽  
Transparent Films ◽  
Sol Gel Process ◽  
Crystalline Films

Novel thin films of ultrafine titanium dioxide particles dispersed in a matrix of hydroxypropylcellulose (HPC) polymer have been made on quartz and silicon substrates. The titanium dioxide particles were made by the hydrolysis and condensation of titanium tetraethoxide (TEOT) in solutions of HPC in a mixture of ethanol and water. HPC controlled the particle size by adsorbing at the particle surface during the growth process and generating repulsive steric forces. The TiO2/HPC composite films were transparent in the visible region and completely blocked ultraviolet radiation at 300 nm. These films were crack-free and uniform in composition and thickness. Transparent films of amorphous TiO2 were made by burning out the HPC at 500 °C. These films were highly uniform and had no macroscopic cracks. X-ray diffraction revealed a transition to the anatase form upon sintering at 600 °C. A film sintered at 700 °C had a porosity of 38%. The crystalline films remained transparent until they densified at 800 °C.

Titanium Dioxide Thin Films: Effect of Annealed in Oxygen Ambient

2011 ◽  
Vol 364 ◽  
pp. 12-15 ◽  
Author(s):  
Mohd Nor Asiah ◽  
M.F. Achoi ◽  
Saifollah Abdullah ◽  
Mohamad Rusop
Keyword(s):  
Thin Films ◽  
Titanium Dioxide ◽  
Spin Coating ◽  
Quartz Substrate ◽  
Visible Region ◽  
Transmission Spectra ◽  
Atomic Force ◽  
Average Transmittance ◽  
Coating Method ◽  
Titanium Dioxide Thin Films

Titanium dioxide (TiO2) thin films deposited on quartz substrate by spin-coating method using titanium (IV) butoxide has been studied. The aim of this paper is to investigate the effect of annealing in oxygen ambient on the morphology and optical properties of thin films. The distinct variations in the morphology of the thin films were observed from atomic force microscope (AFM) images. The transmission spectra obtained from UV-VIS-NIR showed the TiO2thin films exhibited average transmittance value up to 80% in the visible region. Raman spectra of thin films annealed in O2shifted from 142 cm-1to 179 cm-1.

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