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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.
Santos, Elton J. G.
|et. al :||No|
|Published in :||Nature Communications|
|Publisher / Ed. Institution :||Nature|
|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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|2020_Jagielski_Scalable_photonic_sources_using_two-dimensional_lead_halide_perovskite_superlattices_Nature_Communications.pdf||3.01 MB||Adobe PDF|
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