[ Papers ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 30, No. 4, pp.253-258

ISSN: 2508-5107 (Online)

Print publication date 15 Aug 2021

Received 04 Jun 2021 Revised 23 Jun 2021 Accepted 28 Jun 2021

DOI: https://doi.org/10.7735/ksmte.2021.30.4.253

CO₂ Laser 열탄소환원공정을 이용한 실리콘 나노입자 생산기술 개발

이학주^a ; 이승환^a ; 김성범^a^{, *}

Development of Silicon Nanoparticle Production Technology using a CO₂ Laser-assisted Carbothermal Reduction Process

Hakju Lee^a ; Seunghwan Lee^a ; Seongbeom Kim^a^{, *}

aDepartment of Mechanical Design Engineering, Kangwon National University

Correspondence to: ^*Tel.: +82-33-570-6396 E-mail address: sbkim81@kangwon.ac.kr (Seongbeom Kim).

Abstract

Silica is the most readily available and the cheapest silicon material on Earth. Silicon shows excellent performance in many fields such as semiconductors and solar cells, and is currently a key material in industry. Although an electric arc furnace is used for mass production of silicon, there are critical disadvantages that need to be resolved. In this paper, we propose a CO₂ laser-assisted carbothermal reduction process that incorporates a laser beam as an energy source. This process can successfully reduce silica to silicon, and the products are dry nanopowders that are easy to handle. We analyzed the characteristics of the nanoparticles produced through Raman spectroscopy and electron microscopy analysis. In addition, we present the production yield and energy efficiency through a quantitative analysis for the first time.

Keywords:

Silica, Silicon, Sand to silicon, Carbothermal reduction, CO₂ laser

Acknowledgments

본 연구는 한국연구재단 연구비 지원으로 수행된 연구입니다(2017R1C1B2011606, 2021R1I1A3059984).

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Hakju Lee

Graduate Student in the Department of Mechanical Design Engineering, Kangwon National University.

His research interest is carbothermal reduction of silica

E-mail: kinv13@naver.com

Seunghwan Lee

Undergraduate Student in the Department of Mechanical Design Engineering, Kangwon National University.

His research interest is designing of mechanical system.

E-mail: lsh961204@gamil.com

Seongbeom Kim

Professor in the Department of Mechanical Design Engineering, Kangwon National University.

His research interest is production of nanoparticles and its applications.

E-mail: sbkim81@kangwon.ac.kr