Laminating two-layer thick films structure tin oxide-based butane gas sensor operating at low temperature

Electrical and Gas‐Sensing Properties of a Thick Film Resistor of Nanosized SnO2 with Variable Percentage of Permanent Binder

“…In recent years, nanosize semiconducting oxides have led to a new era in the field of gas sensors 1–5 . Nanosize SnO 2 is one of the most widely used semiconducting materials for gas sensing due to its high sensitivity toward small‐concentration toxic gases 6–9 . Tin dioxide‐based gas sensors have been synthesized in various forms such as thin 5,10,11 or thick films 12,13 and pellets 14,15 .…”

“…[1][2][3][4][5] Nanosize SnO 2 is one of the most widely used semiconducting materials for gas sensing due to its high sensitivity toward small-concentration toxic gases. [6][7][8][9] Tin dioxide-based gas sensors have been synthesized in various forms such as thin 5,10,11 or thick films 12,13 and pellets. 14,15 Among the structural parameters, the nanocrystallite size 16 and film thickness, 17,18 and the porosity in the sensing layer 19 have a pronounced effect on the gas sensitivity.…”

Role of defect engineering in revealing the electronic and sensing applications of Janus WSSe monolayer

“…[35][36][37][38] For instance, 5% of Pt-AZO nanosheet has sufficient surface area to detect butane, hence it showed practical utility with maximum gas response (56.52-3000 ppm) at a low working temperature of 200 1C. 38 Previously, SnO 2based semiconductor gas sensor 39,40 was reported to show higher selectivity and better thermal stability for C 4 H 10 detection with concentration of 50-1000 ppm at low operation temperature (B250 1C). For propane, SnO 2 with varied dopants was synthesized, 41 which exhibited low power consumption (up to 100 mW) with fast responsibility and low recovery time (B150 s).…”

Selectivity Enhancement by Using Double-Layer MOX-Based Gas Sensors Prepared by Flame Spray Pyrolysis (FSP)

“… Chemical filters can either eliminate the interfering gas by catalytic conversion into an inert product (for example, by depositing metallic films such as Pd, Pt, or Rh [ 10 ] or porous layers of metal oxides [ 8 ] on top of the sensing layer) or can influence the chemical reaction of the analyte in the sensing layer to enhance the desired response. In [ 7 , 14 , 15 ], an increase of sensitivity to a certain target gas was reported, which was achieved by the presence of a second noble metal-loaded Al 2 O 3 layer. …”

“…Furthermore, recent studies showed that double-layer gas sensors using different combinations of metal oxides can have a positive effect on the gas response [ 15 , 16 , 17 ].…”