Manganese doped Zinc oxide thin film hydrogen gas sensor at reduced operating temperature

During the past few decades, semiconductor metal oxide (SMO) gas sensors have become a prime technology in several domestic, commercial, and industrial gas sensing. The semiconductor properties of zinc oxide along with its dopant remain to be trapped fully in its application as gas sensor. With the advent of nanotechnology, miniaturization and high sensitivity happens to be a key issue in sensor fabrication. Most of the SMO gas sensors fabricated by nanotechnology process operate at high temperature. This paper gives a new insight to hydrogen gas sensor characteristics, by reducing the operating temperature of hydrogen (H 2 ) sensor, fabricated from the nano particle of manganese doped zinic oxide(ZnO), synthesized by chemical precipitation method.