Author/Authors :
Azol, Mas Elyza Mohd Universiti Teknologi Malaysia - Faculty of Electrical Eng, Malaysia , Nayan, Nafarizal Universiti Tun Hussein Onn (UTHM), Malaysia , Hashim, Uda Universiti Malaysia Perlis - Institute of Nanoelectronic Engineering(INEE), Malaysia , Kashif, Muhammad Universiti Malaysia Perlis - Institute of Nanoelectronic Engineering(INEE), Malaysia , Leow, Pei Ling Universiti Teknologi Malaysia - Faculty of Electrical Eng, Malaysia , Arsat, Rashidah Universiti Teknologi Malaysia - Faculty of Electrical Eng, Malaysia , Shafiei, Mahnaz Queensland University of Technology(QUT) - Science and Engineering Faculty, Australia
Abstract :
This paper reports on the study of the effect on adding total peripheries and sharp edges to the Schottky contact as a hydrogen sensor. Schottky contact was successfully designed and fabricated as hexagon-shape. The contact was integrated together with zinc oxide thin film and tested towards 1% hydrogen gas. Simulations of the design were conducted using COMSOL Multiphysics to observe the electric field characteristic at the contact layer. The simulation results show higher electric field induced at sharp edges with 4.18×104 V/m. Current-voltage characteristic shows 0.27 V voltage shift at 40 μA biased current.
Keywords :
Schottky diode , electrode , hexagon , shape , zinc Oxide , hydrogen sensor
