6.Du, J., Junjie Shi, 2D Ca3Sn2S7 Chalcogenide Perovskite: A Graphene‐Like Semiconductor with Direct Bandgap 0.5 eV and Ultrahigh Carrier Mobility 6.7 × 104cm2V−1−1.Adv. Mater.2019, 1905643.

1. Du, J., Junjie Shi, 2D Ca3Sn2S7 Chalcogenide Perovskite: A Graphene‐Like Semiconductor with Direct Bandgap 0.5 eV and Ultrahigh Carrier Mobility 6.7 × 104cm2V−1−1.Adv. Mater.2019, 1905643.