In2O3-based gas sensors

In2O3:Ga and In2O3:P-based one-electrode gas sensors: Comparative study

“…The description of sensor construction and the technology of sensor fabrication one can find in [17,18]. The beads in the studied sensors were in the shape of a hollow short cylinder.…”

Iron Oxide Nanoparticles for Next Generation Gas Sensors

“…For p-type material, the reducing gases extract holes from the oxide material, and hence the conductance is reduced [1][2][3][4][5][6][7][8]. Typically, various materials have been reported for use in semiconductor gas sensors, such as SnO 2 (n-type) [9], TiO 2 (n-type) [10], ZnO (n-type) [11], In 2 O 3 (n-type) [12], WO 3 (n-type) [13][14][15], α-Fe 2 O 3 (n-type) [16], α-Fe 2 O 3 (n-type) [17], carbon nanotube (p-type) [18,19], Co 3 O 4 (p-type) [20], V 2 O 5 (p-type) [21], CuO (p-type) [22], and etc. Among them, α-Fe 2 O 3 has very large potential for practical use in gas sensors due to its high sensitivity, high stability and sensitivity to various gases, especially toxic gases [23,24,70].…”

Detection of explosive markers using zeolite modified gas sensors

“…[35][36][37][38][39] Overlayers and admixtures were created using two types of zeolite, H-Zeolite Socony Mobil (ZSM)-5 and Titanium Silicate (TS)-1. H-ZSM-5 has been shown to improve sensitivity of WO 3 sensors to NO 2 , so it was anticipated that it may do the same for molecules containing an -NO 2 group.…”