Characterization and NO2 gas sensing properties of spray pyrolyzed SnO2 thin films

Effect of Surfactants on the Microstructures of Hierarchical SnO2 Blooming Nanoflowers and their Gas-Sensing Properties

“…At present, the metal oxide semiconductors occupy an important position in various sensors due to their simple preparation process, lower cost, and higher sensitivity to the target gases [ 2 – 4 ]. Tin dioxide (SnO 2 ), a multifunctional n-type material with a direct band gap of 3.6 eV [ 5 ], has been widely used in both fundamental study and practical applications, such as gas sensors [ 6 ], catalysis [ 7 ], and optoelectronic devices [ 8 ]. Especially, SnO 2 has been regarded as the most potential sensing material owing to its natural non-stoichiometry [ 9 ], high sensitivity, fast response/recovery speed, and high chemical stability [ 10 ].…”

Fabrication and Characterization of Sensitive Room Temperature NO2 Gas Sensor Based on ZnSnO3 Thin Film

“…NO 2 gas is one of the most exhaustively studies gases . At much higher doses, NO 2 gas produces respiratory diseases, unconsciousness, and even death . Thus, there are strong demands for sensitive sensors to detect NO 2 gas at a low concentration .…”

“…Thus, there are strong demands for sensitive sensors to detect NO 2 gas at a low concentration . The review of literature revealed that single metal oxides gas sensor operating at high temperatures to achieve better response and recover rapidly, such as TiO 2 , Co 3 O 4 , ZnO, and SnO 2 . However, the detection of an explosive species such as Nitrogen dioxide at high temperature could cause explosions .…”

Synthesis, characterization, and surface functionalization of nanocrystalline SnO2 thin films prepared using a low‐cost doctor blade method

“…SnO 2 is a less‐studied wide‐bandgap semiconductor and, by comparison with TiO 2 and ZnO, has barely been studied in thin film photovoltaic devices and catalysis. SnO 2 has also come to some prominence in recent years because of its use as a gas sensor …”

“…SnO 2 has also come to some prominence in recent years because of its use as a gas sensor. 3,4 The dominant methods for the preparation of SnO 2 thin films has been spin and dip coating, 5,6 which can be cost prohibitive for the fundamental research of this metal oxide platform, especially at teaching based primarily undergraduate institutions (PUIs). There are also disadvantages to both techniques.…”