title: Photon Transport in One-Dimensional Incommensurately Epitaxial CsPbX3Arrays.
abstract: One-dimensional nanoscale epitaxial arrays serve as a great model in studying fundamental physics and for emerging applications. With an increasing focus laid on the Cs-based inorganic halide perovskite out of its outstanding material stability, we have applied vapor phase epitaxy to grow well aligned horizontal CsPbX3(X: Cl, Br, or I or their mixed) nanowire arrays in large scale on mica substrate. The as-grown nanowire features a triangular prism morphology with typical length ranging from a few tens of micrometers to a few millimeters. Structural analysis reveals that the wire arrays follow the symmetry of mica substrate through incommensurate epitaxy, paving a way for a universally applicable method to grow a broad family of halide perovskite materials. The unique photon transport in the one-dimensional structure has been studied in the all-inorganic Cs-based perovskite wires via temperature dependent and spatially resolved photoluminescence. Epitaxy of well oriented wire arrays in halide perovskite would be a promising direction for enabling the circuit-level applications of halide perovskite in high-performance electro-optics and optoelectronics.
authors.forename: Yiping
authors.initials: Y
authors.lastname: Wang
authors.forename: Xin
authors.initials: X
authors.lastname: Sun
authors.affiliation: Cavendish Laboratory, University of Cambridge , Cambridge, CB21TN, United Kingdom.
authors.forename: Ravichandran
authors.initials: R
authors.lastname: Shivanna
authors.forename: Yunbo
authors.initials: Y
authors.lastname: Yang
authors.forename: Zhizhong
authors.initials: Z
authors.lastname: Chen
authors.forename: Yuwei
authors.initials: Y
authors.lastname: Guo
authors.forename: Gwo-Ching
authors.initials: GC
authors.lastname: Wang
authors.forename: Esther
authors.initials: E
authors.lastname: Wertz
authors.affiliation: Cavendish Laboratory, University of Cambridge , Cambridge, CB21TN, United Kingdom.
authors.forename: Felix
authors.initials: F
authors.lastname: Deschler
authors.affiliation: X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States.
authors.forename: Zhonghou
authors.initials: Z
authors.lastname: Cai
authors.affiliation: X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States.
authors.forename: Hua
authors.initials: H
authors.lastname: Zhou
authors.forename: Toh-Ming
authors.initials: TM
authors.lastname: Lu
authors.forename: Jian
authors.initials: J
authors.lastname: Shi
keywords: Halide; epitaxy; incommensurate; perovskite; photon; transport