Light-activated NO2 gas sensing of the networked CuO-decorated ZnS nanowire gas sensor

Recent advances in 2D/nanostructured metal sulfide-based gas sensors: mechanisms, applications, and perspectives

“…For metal sulde-based n-n and p-p heterojunctions, Zhang et al 129 optimized the NH 3 sensing behaviour by using SnS 2 /ZnS hierarchical NFWs. The gas sensors based on metal sulde n-n junctions beneting from metal oxide hybrids, such as CdS/CeO 2 , 130 CdS/ZnO, 131 ZnS/ZnO, 132 and ZnS/CuO, 133 have been employed for the detection of VOC toxic gases. The electrons ow across the heterojunction from the higher Fermi level to the lower one, which induces band bending and EDL formation at the interface.…”

Ultraviolet Light-Assisted Copper Oxide Nanowires Hydrogen Gas Sensor

“…Therefore, more electrons are available for the chemisorption of O 2 . Furthermore, UV light affects the chemisorption and desorption processes by altering the energetic state of H 2 gas on the CuO NW surface [ 30 , 31 ]. The whole process speeds up the interaction between the surface of the CuO NWs and H 2 gas and increases the reaction.…”

Light-activated gas sensing: a perspective of integration with micro-LEDs and plasmonic nanoparticles

“…While metal oxides and 2D materials are the most widely studies electronic materials for the gas sensor application, there have been other efforts on discovering new possible electronic materials for the gas sensors, including inorganic halide perovskites [40][41] , metal sulfides 42,[94][95][96][97][98][99][100] , or organic semiconductors 53,[101][102][103] . This section summarizes lightactivated gas sensing properties of electronics materials other than metal oxides and 2D materials.…”