Follow
International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2019) [Effective from January 1, 2019]For more details click here

Login as a Reviewer

Indexed in



National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2018: 95.39
For more details click here

See Guidelines to Authors
Current Issues

Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(6): 1510-1520
DOI: https://doi.org/10.20546/ijcmas.2017.606.178


Electrical Conductivities, Photocurrent Densities and Mechanical properties of Ag/TiO2 Composite Thin Films Heat Treated at Different Temperatures
Daniel S. Likius, Hiroki Nagai and Mitsunobu Sato*
University of Namibia, Department of Chemistry and Biochemistry, Windhoek, 9000, Namibia
*Corresponding author
Abstract:

The control of heat treatment temperature plays a key role towards understanding the effect of different temperatures on the optical, photo responsive, electrical conductivity and mechanical properties of noble metal/semiconductor composite thin films. This work reports on the electrical conductivity, photo electrochemical, and mechanical properties of silver nanoparticles/titanium dioxide (Ag-NP/TiO2) composite thin films, successfully synthesized. Respective precursor solutions for Ag-nanoparticles and titania were prepared from Ag salt and a titanium complex using the molecular precursor method (MPM), spin-coated on quartz glass substrates and heat treated at different temperatures, namely; 250, 300, 400, 500, 600, 700 and 800 °C. The electrical resistivity of the films was of the order of 9.6×1000 to 10–4 Ω·cm with film thicknesses in the range 100–270 nm. For the study of electrochemical properties of the Ag-NP/TiO2 composite thin films, the photocurrent was measured under natural potential by a conventional three-electrode method using a silver (Ag) plate as a counter electrode. Under Vis-light irradiation, the cathodic photocurrent density of these films increased with an increase in the heat treatment temperature. The mechanical strength of quartz glass, and Ag-NP/TiO2 thin films whose heat treated at higher temperature (500, 600, and 700ºC) were examined in order to check their potential use in practical systems as solar cells. The results illustrated that there is a distinctive decrease of Young`s modulus and Knoop hardness values with an increasing of heat treatment temperature.


Keywords: Electrical conductivities,Photocurrent densities,Temperatures.
Download this article as Download

How to cite this article:

Daniel S. Likius, Hiroki Nagai and Mitsunobu Sato. 2017. Electrical Conductivities, Photocurrent Densities and Mechanical properties of Ag/TiO2 Composite Thin Films Heat Treated at Different Temperatures.Int.J.Curr.Microbiol.App.Sci. 6(6): 1510-1520. doi: https://doi.org/10.20546/ijcmas.2017.606.178