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Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Scalable photonic sources using two-dimensional lead halide perovskite superlattices
Authors : Jagielski, Jakub
Solari, Simon F.
Jordan, Lucie
Scullion, Declan
Blülle, Balthasar
Li, Yen-Ting
Krumeich, Frank
Chiu, Yu-Cheng
Ruhstaller, Beat
Santos, Elton J. G.
Shih, Chih-Jen
et. al : No
DOI : 10.1038/s41467-019-14084-3
Published in : Nature Communications
Volume(Issue) : 11
Issue : 1
Issue Date: Jan-2020
Publisher / Ed. Institution : Nature
ISSN: 2041-1723
Language : English
Subject (DDC) : 530: Physics
Abstract: Miniaturized photonic sources based on semiconducting two-dimensional (2D) materials offer new technological opportunities beyond the modern III-V platforms. For example, the quantum-confined 2D electronic structure aligns the exciton transition dipole moment parallel to the surface plane, thereby outcoupling more light to air which gives rise to high-efficiency quantum optics and electroluminescent devices. It requires scalable materials and processes to create the decoupled multi-quantum-well superlattices, in which individual 2D material layers are isolated by atomically thin quantum barriers. Here, we report decoupled multi-quantum-well superlattices comprised of the colloidal quantum wells of lead halide perovskites, with unprecedentedly ultrathin quantum barriers that screen interlayer interactions within the range of 6.5 Å. Crystallographic and 2D k-space spectroscopic analysis reveals that the transition dipole moment orientation of bright excitons in the superlattices is predominantly in-plane and independent of stacking layer and quantum barrier thickness, confirming interlayer decoupling.
Fulltext version : Published version
License (according to publishing contract) : CC BY 4.0: Attribution 4.0 International
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Appears in Collections:Publikationen School of Engineering

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