AApplied Surface Science3/26/2026Gas-sensing characteristics of orthorhombic SnS and hexagonal SnS2 with air-annealing-induced oxygen incorporationSeong-Yong Kim·Yun-Hyuk Choi·Daehyeon Hong·Myeong Gyu Kim·Yihao ZhouRead at Applied Surface ScienceTagsGas Sensing Nanomaterials and SensorsElectrical and Electronic Engineering