TY - JOUR ID - 97319 TI - Gas Sensing and Structural Properties of a Nano-structure MoO3-based Hydrogen Sensor JO - Iranica Journal of Energy & Environment JA - IJEE LA - en SN - 2079-2115 AU - Farzi kahkesh, S. AU - Fattah, A. AU - Rahmani, M. B. AD - Department of Electrical Engineering and Robotic, Shahrood University of Technology, shahrood, Iran AD - Department of Physics, Shahrood University of Technology, shahrood, Iran Y1 - 2019 PY - 2019 VL - 10 IS - 4 SP - 230 EP - 234 KW - Blade KW - H2 Sensor KW - Metal Oxide Semiconductor KW - MoO3 DO - 10.5829/ijee.2019.10.04.01 N2 - In this research, thin films of molybdenum trioxide were deposited on a glass substrate using Doctor Blade method. Ammonium Heptamolbudate tetrahydrate (NH4)6Mo7O24 powder is considered as a precursor to this study. Growth of the samples in three main directions of (020), (040) and (060) showed the formation of a layered structure and also the formation of α-phase of molybdenum oxide. In addition, scanning electron microscope imaging of the samples showed flat micro-capsule like structure. Furthermore, gas sensing properties of the fabricated structure were studied in expose to different concentrations of hydrogen gas. The highest and lowest sensitivities were reported about 16 and 91%, for 100 and 1000 ppm of hydrogen gas, respectively, which shows more sensitivity compare to previous studies. Moreover, the fabricated sensor exhibits good stability as well as repeatability for H2 gas detection. UR - https://www.ijee.net/article_97319.html L1 - https://www.ijee.net/article_97319_85816d0062779e63820076663b5ed369.pdf ER -