MORPHOLOGICAL AND ELECTRICAL CHARACTERIZATION OF HYBRID THIN-FILM COMPOSED OF TITANIA NANOCRYSTALS, POLY (3-HEXYLTHIOPHENE) AND PIPER BETLE LINN

Authors

  • Salmah Mohd Ghazali School of Ocean Engineering, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia
  • Hasiah Salleh Centre for Fundamental and Liberal Education, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia
  • Mohd Sabri Mohd Ghazali School of Fundamental Science, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia
  • Ahmad Nazri Dagang School of Ocean Engineering, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia
  • Azmi Zakaria Department of Physics, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
  • Muhammad Aimy Mahfuzzan Mohd Zaini School of Ocean Engineering, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia
  • Muhamad Azman Zulkifli School of Fundamental Science, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia

DOI:

https://doi.org/10.11113/jt.v78.7468

Keywords:

Electrical conductivity, Field Emission Scanning Electron Microscopy, Piper Betle Linn, Poly (3-hexylthiophene), Titania nanocrystals

Abstract

In this research, the effect of scan numbers of titania nanocrystals (TiO2 NCs) on the morphological and electrical characteristics of hybrid thin-films is investigated. These hybrid thin-films consist of a combination of organic (Piper Betle Linn extraction and Poly (3-hexytlthiophene) (P3HT)) and inorganic TiO2 NCs (anatase structure) materials. These hybrid thin-films are fabricated in bilayer heterojunction of ITO/TiO2 NCs/P3HT/Piper Betle Linn via electrochemistry method using Electrochemical Impedance Spectroscopy (EIS). The scan numbers of TiO2 NCs are varied by 1, 3 and 5 number of scans. The morphological characterization is carried out via Field Emission Scanning Electron Microscopy (FESEM) meanwhile the electrical characteristic of the hybrid thin-film is measured by using four point probes. FESEM image indicates the particle size was found to be around 17-34 nm. The increment of scan number of TiO2 NCs from one to five scan numbers of TiO2 NCs in bilayers thin films showed that the atomic percentage of titanium decrease from 5.23% to 2.20%. This result indicates that as the thickness of thin films increases, the electrons required more energy to excite into conduction band of TiO2. Meanwhile, the electrical conductivities of hybrid solar cell increase from 0.385 Scm-1 to 0.389 Scm-1 as the scan numbers of TiO2 increase from one to three, however the electrical conductivity decrease to 0.346 Scm-1 at five scan numbers. As a conclusion, this study shows that the morphological and electrical properties of hybrid thin-films can be significantly affected by the scan number of TiO2 NCs.

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Published

2016-02-21

Issue

Vol. 78 No. 3: March 2016

Section

Science and Engineering

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How to Cite

MORPHOLOGICAL AND ELECTRICAL CHARACTERIZATION OF HYBRID THIN-FILM COMPOSED OF TITANIA NANOCRYSTALS, POLY (3-HEXYLTHIOPHENE) AND PIPER BETLE LINN. (2016). Jurnal Teknologi (Sciences & Engineering), 78(3). https://doi.org/10.11113/jt.v78.7468