Figure 8.

(a) Schematic diagram of the preparation process of SnS₂ and SnS₂/In₂S₃ samples. (b) Response of SnS₂/In₂S₃ samples to different gas concentrations of TEA, and (c) the Log(R) vs. Log(C) curve of SnS₂ and SnS₂–1% In₂S₃. (d,e) Selectivity of SnS₂/In₂S₃ heterostructure gas sensor devices under 100 ppm of various gases. (f) Linear relationships of the responses’ different seafood storage times, and corresponding concentrations (the inset represents the relationship curves of Log(R) vs. Log(C) of SnS₂–1% In₂S₃). Reprinted from [101].