Stability, electronic structure, and optical properties of lead-free perovskite monolayer Cs <sub>3</sub> <i>B</i> <sub>2</sub> <i>X</i> <sub>9</sub> ( <i>B</i>=Sb, Bi; <i>X</i>=Cl, Br, I) and bilayer vertical heterostructure Cs <sub>3</sub> <i>B</i> <sub>2</sub> <i>X</i> <sub>9</sub>/Cs <sub>3</sub> <i>B</i> <sub>2</sub>' <i>X</i> <sub>9</sub> ( <i>B</i>, <i>B</i>'=Sb, Bi; <i>X</i>=Cl, Br, I)

Stability, electronic structure, and optical properties of lead-free perovskite monolayer Cs ₃ B ₂ X ₉ ( B=Sb, Bi; X=Cl, Br, I) and bilayer vertical heterostructure Cs ₃ B ₂ X ₉/Cs ₃ B ₂' X ₉ ( B, B'=Sb, Bi; X=Cl, Br, I)

Yaowen Long(龙耀文), Hong Zhang(张红), and Xinlu Cheng(程新路)

Stability, electronic structure, and optical properties of lead-free perovskite monolayer Cs ₃ B ₂ X ₉ ( B=Sb, Bi; X=Cl, Br, I) and bilayer vertical heterostructure Cs ₃ B ₂ X ₉/Cs ₃ B ₂' X ₉ ( B, B'=Sb, Bi; X=Cl, Br, I)

Yaowen Long(龙耀文), Hong Zhang(张红), and Xinlu Cheng(程新路)

中国物理B . 2022, (2): 27102 -027102 . DOI: 10.1088/1674-1056/ac2e5f