Phosphorene is a promising candidate for gas sensing materials. This letter describes our study of the adsorption of SF6and SF6decomposition gases (SO2and H2S) on phosphorene. We used first principles calculations to explore phosphorene's potential applications as gas sensor to diagnose the state of online gas insulated switchgear (GIS). The calculation results showed that only the adsorption of SO2induced a moderate adsorption energy and apparent charge transfer. We further investigated the current-voltage (I-V) relationships before and after gas absorption through the non-equilibrium Green's function method. It was found that only SO2induced a dramatic change in the I-V relationships. Therefore, phosphorene appears to be a promising candidate for highly sensitive and selective SF6decomposition gas sensors for online GIS diagnosis.
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Yang et al. (2017) studied this question.
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