Fig. 1: Fabrication and sensing mechanism of SIG sensor.

a Schematic diagram of the fabrication process of the SIG sensor. b Schematic diagram of the temperature sensitivity mechanism of the sensor. c FT-IR spectra of CIG and SIG

a Schematic diagram of the fabrication process of the SIG sensor. b Schematic diagram of the temperature sensitivity mechanism of the sensor. c FT-IR spectra of CIG and SIG