Identifying the Origin of Hexagonal Boron Nitride Single Photon Emitters with nano-FTIR.

Chia-Hung Wu, Po-Sheng Shih, Nicholaus Kevin Tanjaya, Kuo-Ping Chen, Satoshi Ishii

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Article in The journal of physical chemistry letters, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 authors.

Chia-Hung WuCollege of Photonics, National Yang Ming Chiao Tung University, 301 Gaofa 3rd Road, Tainan 71150, Taiwan.ORCID 0000-0003-4489-3050

Po-Sheng ShihInstitute of Photonics Technologies, National Tsing Hua University, Hsinchu 300, Taiwan.

Nicholaus Kevin TanjayaResearch Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.

Kuo-Ping ChenInstitute of Photonics Technologies, National Tsing Hua University, Hsinchu 300, Taiwan.ORCID 0000-0001-6256-9145

Satoshi IshiiResearch Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.ORCID 0000-0003-0731-8428

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Quantum light sources in van der Waals solid systems operating at room temperature have drawn significant attention, among which, with particular interest, is hexagonal boron nitride (hBN). Numerous efforts have focused on producing reliable, bright, and controllable single photon emitters (SPEs) in hBN. However, the identity of these emitters remains ambiguous, leading to unreproducible experimental results. Here, we offer direct evidence that hBN SPEs generated through annealing are not inside the hBN itself but originate from organic residues that carbonize and form aromatic fluorophores. Nanoscale Fourier transform infrared spectroscopy is used to analyze the emission sites, revealing the presence of carbon bonds in aromatic rings with a characteristic C═C absorption peak at 1650 cm

Identifiers

PMID41668388

DOI10.1021/acs.jpclett.5c03632

PMCPMC12951557

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