Rational surface modification of ZnO with siloxane polymers for room-temperature-operated thin-film transistor-based gas sensors

Simulating the I‐V characteristics of an ultrathin IGZO‐based thin film transistor using finite element method

“…The only key input needed is the seeded simulation or experimental data inputted to the characterization matrix model. It is also worth to highlight that the set of suggested coefficients C mn should have tuneable units per row to satisfy physically the proposed model in Equations (5) to (8).…”

“…22 These AOSs can include ZnO, InZnO (IZO), ZnSnO (ZTO), InSnZnO (ITZO), and InGaZnO (IGZO). 5,6,10,19,[22][23][24][25][26][27][28] The major advantage of AOSs against other conventional semiconductors is the room temperature deposition applicability. 29 Specifically, IGZO demonstrated a very high performance as an active layer in TFT, due to its large on/off current ratio, high field effect mobility, low threshold voltage, and sharp sub threshold swing.…”

Impact of a Diverse Combination of Metal Oxide Gas Sensors on Machine Learning-Based Gas Recognition in Mixed Gases

“… 13 − 15 A combination of a polar siloxane polymer layer and metal oxide thin films has also been implemented to discriminate between polar and nonpolar gases for volatile organic compound gases. 16 , 17 In addition, considerable interest has focused on the complementary hybridization of metal oxides and catalysts to reduce the activation energy for the charge interaction of adsorbed specific analytes with the sensing materials. 18 , 19 …”

“…It has been demonstrated that gas sensors based on p-n junctions are able to realize high selectivity through the gas adsorption-dependent modulation of a space charge region between the p-n junctions, which is attributable to the alteration in carrier concentration before and after the surface adsorption of target gases. − Similarly, a barristor-type gas sensor secured the selectivity by maximizing the response via modulation of the Schottky barrier height between the heterojunctions associated with gas adsorption-stimulated variation in the work function. , Second, surface modification and functionalization of sensing materials have been adopted concentrically to engineer the gas adsorption energy at the surface of the sensing materials. To achieve gas selectivity, metal–organic frameworks have been utilized on the surface of sensing materials for gas filtering via a molecular sieving effect. − A combination of a polar siloxane polymer layer and metal oxide thin films has also been implemented to discriminate between polar and nonpolar gases for volatile organic compound gases. , In addition, considerable interest has focused on the complementary hybridization of metal oxides and catalysts to reduce the activation energy for the charge interaction of adsorbed specific analytes with the sensing materials. , …”

“…13−15 A combination of a polar siloxane polymer layer and metal oxide thin films has also been implemented to discriminate between polar and nonpolar gases for volatile organic compound gases. 16,17 In addition, considerable interest has focused on the complementary hybridization of metal oxides and catalysts to reduce the activation energy for the charge interaction of adsorbed specific analytes with the sensing materials. 18,19 Based on these results, it can be deduced that central research to achieve the gas selectivity of chemiresistive-type gas sensors has been constrained to boost the response of a specific gas among diverse gases, which is distinctly accompanied with limited research on sensing materials and device architecture.…”