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Huo N, Yang S, Wei Z, Li S-S, Xia J-B, Li J (2014) Photoresponsive and gas sensing field-effect transistors based on multilayer WS 2 nanoflakes.
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Late DJ, Huang Y-K, Liu B, Acharya J, Shirodkar SN, Luo J, Yan A, Charles D, Waghmare UV, Dravid VP (2013) Sensing behavior of atomically thin-layered MoS 2 transistors. He Q, Zeng Z, Yin Z, Li H, Wu S, Huang X, Zhang H (2012) Fabrication of flexible MoS 2 thin-film transistor arrays for practical gas-sensing applications. Schedin F, Geim AK, Morozov SV, Hill EH, Blake P, Katsnelson MI, Novoselov KS (2007) Detection of individual gas molecules adsorbed on graphene. Geim AK, Novoselov KS (2007) The rise of graphene. Science 306:666īerger C, Song Z, Li X, Wu X, Brown N, Naud C, Mayou D, Ji T, Hass J, Marchenkov AN, Conrad EH, First PN, de Heer WA (2006) Electronic confinement and coherence in patterned epitaxial graphene. Novoselov KS, Geim AK, Morozov SV, Jiang D, Zhang Y, Dubonos SV, Grigorieva IV, Firsov AA (2004) Electric field effect in atomically thin carbon films. Nano Lett 4:1919Ĭhopra S, McGuire K, Gothard N, Rao AM (2003) Selective gas detection using a carbon nanotube sensor. Zhang D, Liu Z, Li C, Tang T, Liu X, Han S, Lei B, Zhou C (2004) Detection of NO 2 down to ppb levels using individual and multiple In 2O 3 nanowire devices. Valentini L, Armentano I, Kenny JM, Cantalini C, Lozzi L, Santuccia S (2003) Sensors for sub-ppm NO 2 gas detection based on carbon nanotube thin films. Qi P, Vermesh O, Grecu M, Javey A, Wang Q, Dai H (2003) Toward large arrays of multiplex functionalized carbon nanotube sensors for highly sensitive and selective molecular detection. Novak JP, Snow ES, Houser EJ, Park D, Stepnowski JL, McGill RA (2003) Nerve agent detection using networks of single-walled carbon nanotubes. Li J, Lu Y, Ye Q, Cinke M, Han J, Meyyappan M (2003) Carbon nanotube sensors for gas and organic vapor detection.
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Watson J, Ihokura K (1999) Gas-sensing materials. Our calculations reveal that introduction of vacancy defect increases the sensitivity significantly which is promising for future gas-sensing applications as well. CO 2 and CO donates charge to the ASiNR, showcasing their electron-donating nature contrariwise, CH 4 behaves as electron-withdrawing gas by accepting electronic charge from ASiNRs. Mulliken population analysis reports that a significant amount of charge transfer prevails between ASiNR and gas molecules, validating our results for adsorption energies of the systems. On the other hand, CO is chemisorbed on both nanoribbons exhibiting greater adsorption energy and current, thereby having more sensitivity and more recovery time. It is observed that CH 4 and CO 2 are weakly adsorbed on pristine (P-ASiNR) as well as defective (D-ASiNR) nanoribbons owing to their low adsorption energy and charge transfer, thereby exhibiting low sensitivity and high recoverability. Using non-equilibrium Green’s function (NEGF) formalism combined with first-principle density functional theory (DFT), we explore the nature of adsorption of carbon-based gases and the resulting structural, electronic (band structure, density of states, Mulliken population, and electron density), and transport properties (current-voltage characteristics and transmission eigenstates) on pure and defected armchair silicene nanoribbons (ASiNRs) for sensing applications.