Influence of Pore Size on the Optical and Electrical Properties of Screen Printed TiO 2 Thin Films
Joint Authors
Domtau, Dinfa Luka
Simiyu, Justus
Ayieta, Elijah Omollo
Asiimwe, Godwin Mwebeze
Mwabora, Julius Mwakondo
Source
Advances in Materials Science and Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-09-27
Country of Publication
Egypt
No. of Pages
7
Abstract EN
Influence of pore size on the optical and electrical properties of TiO2 thin films was studied.
TiO2 thin films with different weight percentages (wt%) of carbon black were deposited by screen printing method on fluorine doped tin oxide (FTO) coated on glass substrate.
Carbon black decomposed on annealing and artificial pores were created in the films.
All the films were 3.2 µm thick as measured by a surface profiler.
UV-VIS-NIR spectrophotometer was used to study transmittance and reflectance spectra of the films in the photon wavelength of 300–900 nm while absorbance was studied in the range of 350–900 nm.
Band gaps and refractive index of the films were studied using the spectra.
Reflectance, absorbance, and refractive index were found to increase with concentrations of carbon black.
There was no significant variation in band gaps of films with change in carbon black concentrations.
Transmittance reduced as the concentration of carbon black in TiO2 increased (i.e., increase in pore size).
Currents and voltages ( I - V ) characteristics of the films were measured by a 4-point probe.
Resistivity ( ρ ) and conductivity ( σ ) of the films were computed from the I - V values.
It was observed that resistivity increased with carbon black concentrations while conductivity decreased as the pore size of the films increased.
American Psychological Association (APA)
Domtau, Dinfa Luka& Simiyu, Justus& Ayieta, Elijah Omollo& Asiimwe, Godwin Mwebeze& Mwabora, Julius Mwakondo. 2016. Influence of Pore Size on the Optical and Electrical Properties of Screen Printed TiO 2 Thin Films. Advances in Materials Science and Engineering،Vol. 2016, no. 2016, pp.1-7.
https://search.emarefa.net/detail/BIM-1096387
Modern Language Association (MLA)
Domtau, Dinfa Luka…[et al.]. Influence of Pore Size on the Optical and Electrical Properties of Screen Printed TiO 2 Thin Films. Advances in Materials Science and Engineering No. 2016 (2016), pp.1-7.
https://search.emarefa.net/detail/BIM-1096387
American Medical Association (AMA)
Domtau, Dinfa Luka& Simiyu, Justus& Ayieta, Elijah Omollo& Asiimwe, Godwin Mwebeze& Mwabora, Julius Mwakondo. Influence of Pore Size on the Optical and Electrical Properties of Screen Printed TiO 2 Thin Films. Advances in Materials Science and Engineering. 2016. Vol. 2016, no. 2016, pp.1-7.
https://search.emarefa.net/detail/BIM-1096387
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1096387