The Dion–Jacobson perovskite CsSbCl<sub>4</sub>: a promising Pb-free solar-cell absorber with optimal bandgap ∼1.4 eV, strong optical absorption ∼10<sup>5</sup>cm<sup>−1</sup>, and large power-conversion efficiency above 20%
Wenhui Guo, Yaohui Zhu, Min Zhang, Juan Du, Yu-lang Cen, Shiming Liu, Yong He, Hongxia Zhong, Xinqiang Wang, Junjie Shi
Abstract
A novel Pb-free perovskite CsSbCl<sub>4</sub>is found with a direct bandgap 1.41 eV, strong optical absorption 105 cm<sup>−1</sup>, high hole mobility 104 cm<sup>2</sup>V<sup>−1</sup>s<sup>−1</sup>, and large PCE > 20%.
Topics & Concepts
Band gapAbsorption (acoustics)Perovskite (structure)Materials scienceSolar cellAnalytical Chemistry (journal)PhysicsOptoelectronicsCrystallographyOpticsChemistryChromatographyPerovskite Materials and ApplicationsChalcogenide Semiconductor Thin FilmsSolid-state spectroscopy and crystallography