Enhanced spin lifetime in colloidal quantum dots by growth from singly Mn-doped molecular cluster seeds
Source abstract
Abstract
Doped colloidal quantum dots (CQDs) are promising spin-photon interfaces, combining excellent optical properties and a substrate-free, nano-positionable platform. Here, we report the synthesis of InP/ZnSeS core-shell CQDs from zinc sulphide based seed clusters containing single Mn(II) ions. The resulting doped CQDs demonstrate photoluminescence quantum yields of up to 70%, a spin-lattice lifetime of 22 ms and a spin coherence lifetime of 2.7 μs, greater than and similar to the best yet reported for Mn-doped CQD systems, respectively. These spin lifetimes were achieved despite the high nuclear spin of InP, demonstrating the effectiveness of the ZnS cluster in shielding the Mn ion from its environment.
Source: openalex_inverted_index · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Quantum Dots Synthesis And Properties · Nanocluster Synthesis and Applications · Iron-based superconductors research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Nanoco Technologies Ltd, The Heath Business & Technical Park, Runcorn, Cheshire, WA7 4QX, UK
Department of Physics and Astronomy & Photon Science Institute, University of Manchester, Manchester M13 9PL, UK
Department of Chemistry and Photon Science Institute, University of Manchester, Manchester, M13 9PL, UK
Department of Material Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK
Funding
Innovate UK · Engineering and Physical Sciences Research Council
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