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Orange dye based field effect transistor as humidity sensor

KH. S. KARIMOV1,2, M. M. AHMED3, M. SALEEM4,* , S. SHAFIQUE3, M. AKMAL1

Affiliation

  1. GIK Institute of Engineering Sciences and Technology, Topi, District Swabi, KPK, 23640, Pakistan
  2. Center for Innovative Development of Science and Technologies of Academy of Sciences, Aini 299/2, Dushanbe, 734063, Tajikistan
  3. Capital University of Science and Technology, Islamabad, Pakistan
  4. Government College of Science, Wahdat Road Lahore- 54570, Pakistan

Abstract

In this study aqueous solution of organic semiconductor orange dye (8 wt.%) and sugar (8 wt.%), was prepared. The samples having structure of field effect transistor were fabricated by drop-casting of the solution on the surface-type interdigitated silver electrodes, deposited on ceramic alumina sheet. As a result, sol-gel elastic films of orange dye-sugar blend were fabricated. Drain-source volt-ampere characteristics were slightly non-linear and depend both on humidity level and applied gate-source terminal voltage. The fabricated transistors can be used as humidity sensors.

Keywords

Organic semiconductor, Drop-casting, Orange dye-sugar solution, Sol-gel film, Field effect transistor.

Citation

KH. S. KARIMOV, M. M. AHMED, M. SALEEM, S. SHAFIQUE, M. AKMAL, Orange dye based field effect transistor as humidity sensor, Optoelectronics and Advanced Materials - Rapid Communications, 14, 9-10, September-October 2020, pp.416-420 (2020).

Submitted at: Jan. 22, 2019

Accepted at: Oct. 21, 2020