Large-size and high performance visible-light photodetectors based on two-dimensional hybrid materials SnS/RGO

We report a facile solvothermal method to synthesize two-dimensional hybrid materials consisting of layered SnS nanosheets and reduced graphene oxide (SnS/RGO). Large-size photodetectors with a channel length/width = 2 mm/7 mm are fabricated on Si/SiO₂ substrates, showing an excellent photoresponsivity of 0.18 A W^-1 under visible-light illumination with a detectivity of 4.18 × 10¹⁰ Jones, as well as fast rise and decay times (τ _rise = τ _decay = 0.4 s). SnS/RGO hybrids are therefore promising candidates for potential applications in optoelectronics and low cost, high performance, and reliable photodetectors.