Layer-number tailoring and template-induced orientation control of 2D perovskites on 3D perovskites by adopting the Dion–Jacobson phase. (1st November 2022)

• Record Type: Journal Article
• Authors: Uzurano, Genya; Abe, Kentaro; Saito, Tomoki; Fujii, Akihiko; Ozaki, Masanori
• Is Part Of: Applied physics express. Volume 15:Number 11(2022)
• Publication Date: 2022-11-01
• Subjects: organic–inorganic lead halide perovskite -- 2D/3D heterostructure -- dual bar-coating -- orientation control -- templated growth; Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.35848/1882-0786/ac9883
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: Orientation-controlled 2D perovskites consisting of octahedral monolayers have been realized on 3D perovskites. By bar-coating a Dion–Jacobson (DJ) phase 2D perovskite precursor solution onto 3D perovskite thin films, the conversion of the top layer of 3D perovskite to 2D perovskite was promoted, and the optimal 2D/3D heterostructure could be fabricated. The orientation of the DJ 2D perovskite could be controlled horizontally or obliquely according to the 3D perovskite template thin films; the 2D perovskite was obliquely oriented on (200)/(112)-oriented CH3 NH3 PbI3, and horizontally oriented on (110)-oriented CH3 NH3 PbI2.5 Cl0.5 . This approach would boost the stability and power conversion efficiency of 2D/3D heterostructures.