Title:
MANUFACTURING METHOD FOR SINGLE CRYSTAL SPHERICAL SILICON NANOPARTICLES
Document Type and Number:
WIPO Patent Application WO/2023/218673
Kind Code:
A1
Abstract:
The present invention is a manufacturing method for single crystal spherical silicon nanoparticles that are single crystals, are spherical, and have an average particle diameter of 1 nm to 20 nm. The manufacturing method includes a step for mixing and reacting the following: a raw material solution containing halogenated silicon; and a reducing solution containing anions of a condensed aromatic compound generated from the condensed aromatic compound and lithium, sodium, or potassium. The anions of the condensed aromatic compound are prepared by mixing the lithium, sodium, or potassium with the condensed aromatic compound at a temperature below 0°C. The single crystal spherical silicon nanoparticles manufactured by using the manufacturing method of the present invention make it possible to generate red fluorescence from blue fluorescence due to excitation by using wide wavelength light that ranges from deep ultraviolet light of 200 nm to 300 nm to visible light, and make it possible to increase the fluorescence quantum efficiency of previously known silicon nanoparticles from around 1% to at least 10%.
Inventors:
OHKAWA HIDEKI (JP)
ENOMURA MASAKAZU (JP)
ENOMURA MASAKAZU (JP)
Application Number:
PCT/JP2022/020825
Publication Date:
November 16, 2023
Filing Date:
May 19, 2022
Export Citation:
Assignee:
M TECHNIQUE CO LTD (JP)
International Classes:
B82B3/00; B82Y20/00; C01B33/023; C09K11/59; H01L31/0352; H01L33/06; H01L33/34
Domestic Patent References:
| WO2009020188A1 | 2009-02-12 |
Foreign References:
| JP2007012702A | 2007-01-18 | |||
| JP2005503984A | 2005-02-10 | |||
| CN101439859A | 2009-05-27 | |||
| JP2014172766A | 2014-09-22 | |||
| JP2017081770A | 2017-05-18 | |||
| JP2010205686A | 2010-09-16 | |||
| JP2007012702A | 2007-01-18 | |||
| JP4458202B2 | 2010-04-28 | |||
| JP2007197382A | 2007-08-09 | |||
| JP2009112892A | 2009-05-28 |
Other References:
MUSTAFA H. BALCI JEROME MARIA; FRIDE VULLUM-BRUER; MIKAEL LINDGREN; TOR GRANDE; MARI-ANN EINARSRUD: "Synthesis of Monodisperse Silicon Quantum Dots Through a K-Naphthalide Reduction Route", JOURNAL OF CLUSTER SCIENCE, KLUWER ACADEMIC PUBLISHERS-PLENUM PUBLISHERS, NE, vol. 23, no. 2, 18 February 2012 (2012-02-18), Ne , pages 421 - 435, XP035058313, ISSN: 1572-8862, DOI: 10.1007/s10876-012-0448-0
BALDWIN RICHARD K., PETTIGREW KATHERINE A., RATAI EVA, AUGUSTINE MATTHEW P., KAUZLARICH SUSAN M.: "Solution reduction synthesis of surface stabilized silicon nanoparticles", CHEMICAL COMMUNICATIONS, ROYAL SOCIETY OF CHEMISTRY, UK, no. 17, 21 August 2002 (2002-08-21), UK , pages 1822 - 1823, XP093108584, ISSN: 1359-7345, DOI: 10.1039/b205301b
BALDWIN RICHARD K., PETTIGREW KATHERINE A., RATAI EVA, AUGUSTINE MATTHEW P., KAUZLARICH SUSAN M.: "Solution reduction synthesis of surface stabilized silicon nanoparticles", CHEMICAL COMMUNICATIONS, ROYAL SOCIETY OF CHEMISTRY, UK, no. 17, 21 August 2002 (2002-08-21), UK , pages 1822 - 1823, XP093108584, ISSN: 1359-7345, DOI: 10.1039/b205301b
Attorney, Agent or Firm:
SAKAMOTO & PARTNERS (JP)
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