Spatially Controlled Single Photon Emitters in hBN‐Capped WS<sub>2</sub> Domes
نویسندگان
چکیده
Abstract Monolayers (MLs) of transition‐metal dichalcogenides host efficient single‐photon emitters (SPEs) usually associated to the presence nanoscale mechanical deformations or strain. Large‐scale spatial control strain would enhance scalability such SPEs and allow for their incorporation into photonic structures. Here, formation regular arrays strained hydrogen‐filled one‐layer‐thick micro‐domes obtained by H‐ion irradiation lithography‐based approaches is reported. Typically, H 2 liquefaction temperatures T <32 K causes disappearance domes preventing use as potential SPEs. it shown that dome deflation can be overcome hBN heterostructuring, depositing thin flakes on domes. This leads preservation structure at all temperatures, found micro‐Raman micro‐photoluminescence (µ‐PL) studies. Eventually, spatially controlled hBN‐capped WS show appearance, 5 K, intense emission lines originating from localized excitons, which are behave quantum here. The electronic properties addressed time‐resolved µ‐PL yielding time decays 1–10 ns, magneto‐µ‐PL measurements. latter provide an exciton magnetic moment a factor two larger than value observed in planar strain‐free MLs.
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ژورنال
عنوان ژورنال: Advanced Optical Materials
سال: 2023
ISSN: ['2195-1071']
DOI: https://doi.org/10.1002/adom.202202953