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Processing and Characterization of High-Density Fe-Silicide/Si Core–Shell Quantum Dots for Light Emission.

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Title: Processing and Characterization of High-Density Fe-Silicide/Si Core–Shell Quantum Dots for Light Emission.
Authors: Makihara, Katsunori1,2 (AUTHOR) makihara.katsunori.n6@f.mail.nagoya-u.ac.jp, Yamamoto, Yuji1,2 (AUTHOR), Schubert, Markus Andreas2,3 (AUTHOR), Mai, Andreas1,2 (AUTHOR), Miyazaki, Seiichi2,3 (AUTHOR)
Source: Nanomaterials (2079-4991). May2025, Vol. 15 Issue 10, p733. 9p.
Subjects: Process capability, Electronic control, Light sources, Photons, Signal processing
Abstract: Si-based photonics has garnered considerable attention as a future device for complementary metal–oxide–semiconductor (CMOS) computing. However, few studies have investigated Si-based light sources highly compatible with Si ultra large-scale integration processing. In this study, we observed stable light emission at room temperature from superatom-like β–FeSi2–core/Si–shell quantum dots (QDs). The β–FeSi2–core/Si–shell QDs, with an areal density as high as ~1011 cm−2 were fabricated by self-aligned silicide process of Fe–silicide capped Si–QDs on ~3.0 nm SiO2/n–Si (100) substrates, followed by SiH4 exposure at 400 °C. From the room temperature photoluminescence characteristics, β–FeSi2 core/Si–shell QDs can be regarded as active elements in optical applications because they offer the advantages of photonic signal processing capabilities and can be combined with electronic logic control and data storage. [ABSTRACT FROM AUTHOR]
Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Processing and Characterization of High-Density Fe-Silicide/Si Core–Shell Quantum Dots for Light Emission.
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  Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. May2025, Vol. 15 Issue 10, p733. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Process+capability%22">Process capability</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+control%22">Electronic control</searchLink><br /><searchLink fieldCode="DE" term="%22Light+sources%22">Light sources</searchLink><br /><searchLink fieldCode="DE" term="%22Photons%22">Photons</searchLink><br /><searchLink fieldCode="DE" term="%22Signal+processing%22">Signal processing</searchLink>
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  Data: Si-based photonics has garnered considerable attention as a future device for complementary metal–oxide–semiconductor (CMOS) computing. However, few studies have investigated Si-based light sources highly compatible with Si ultra large-scale integration processing. In this study, we observed stable light emission at room temperature from superatom-like β–FeSi2–core/Si–shell quantum dots (QDs). The β–FeSi2–core/Si–shell QDs, with an areal density as high as ~1011 cm−2 were fabricated by self-aligned silicide process of Fe–silicide capped Si–QDs on ~3.0 nm SiO2/n–Si (100) substrates, followed by SiH4 exposure at 400 °C. From the room temperature photoluminescence characteristics, β–FeSi2 core/Si–shell QDs can be regarded as active elements in optical applications because they offer the advantages of photonic signal processing capabilities and can be combined with electronic logic control and data storage. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.3390/nano15100733
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      – Code: eng
        Text: English
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        PageCount: 9
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      – SubjectFull: Electronic control
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      – SubjectFull: Light sources
        Type: general
      – SubjectFull: Photons
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      – SubjectFull: Signal processing
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              Text: May2025
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