콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Dual-site mixed layer-structured FA(x)Cs(3-x)Sb(2)I(6)Cl(3) Pb-free metal halide perovskite solar cells
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2020-05
- 저자명 홍기하,최용규,허진혁,임상혁
- 학술지명 RSC ADVANCES
- 발행처명 ROYAL SOC CHEMISTRY
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 4
논문 초록 (Abstract)
Structure engineering of trivalent metal halide perovskites (MHPs) such as A(3)Sb(2)X(9) (A = a monovalent cation such as methyl ammonium (MA), cesium (Cs), and formamidinium (FA) and X = a halogen such as I, Br, and Cl) is of great interest because a two dimensional (2D) layer structure with direct bandgap has narrower bandgap energy than a zero dimensional (0D) dimer structure with indirect bandgap. Here, we demonstrated 2D layer structured FACs(2)Sb(2)I(6)Cl(3) MHP by dual-site (A and X site) mixing. Thanks to the lattice-symmetry change by I-Cl mixed halide, the shortest ionic radius of Cs, and the lower solution energy due to dual-site mixing, the FACs(2)Sb(2)I(6)Cl(3) MHP had 2D layer structure and thereby the MHP solar cells exhibited improved short-circuit current density.
