期刊
NANO LETTERS
卷 16, 期 12, 页码 7974-7981出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.6b04297
关键词
Halide; perovskite; incommensurate; epitaxy; photon; transport
类别
资金
- NSF [CMMI 1550941, CMMI 1635520]
- NYSTAR Focus Center at RPI [C130117]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1550941] Funding Source: National Science Foundation
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.
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