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Characterization and optical properties of 1,5-diphenylcarbazide sensor thin film for sensing application

Y. W. FEN1,2,* , A. A. ZAINUDIN1, N. E. SAFIE1, W. M. M. YUNUS1, Z. A. TALIB1, N. A. YUSOF3

Affiliation

  1. Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Malaysia
  2. Functional Devices Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Malaysia
  3. Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Malaysia

Abstract

Optical properties of 1,5-diphenylcarbazide sensor thin film have been investigated. In this project, The 1,5- diphenylcarbazide solution was prepared by dissolving powder form of 1,5-diphenylcarbazide with three types of solvent which were acetone, acetic acid and ethanol with 0.08 mol L-1 molar concentration. It was then deposited on glass cover slip (substrate) using spin coating technique. The obtained thin film was confirmed and characterized by FTIR and AFM while the optical properties were evaluated by UV-VIS NIR spectroscopy. From the absorption edge studies, the values of the absorption coefficient and optical band gap have been found to be varies from 3.97 eV to 4.09 eV. From the experimental results, values of optical band gap are calculated and found to be dependent on the molar concentration of solution and type of solvents used..

Keywords

Thin film, Optical, 1,5-Diphenylcarbazide, Sensing.

Submitted at: Sept. 22, 2017
Accepted at: Oct. 10, 2018

Citation

Y. W. FEN, A. A. ZAINUDIN, N. E. SAFIE, W. M. M. YUNUS, Z. A. TALIB, N. A. YUSOF, Characterization and optical properties of 1,5-diphenylcarbazide sensor thin film for sensing application, Journal of Optoelectronics and Advanced Materials Vol. 20, Iss. 9-10, pp. 537-542 (2018)