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http://dx.doi.org/10.7844/kirr.2022.31.5.52

Synthesis of Silicon Carbide Powder Using Recovered Silicon from Solar Waste Silicon Wafer  

Lee, Yoonjoo (Carbon Neutrality & Materials Digitalization Division, Korea Institute of Ceramic Engineering & Technology)
Kwon, Oh-Kyu (Carbon Neutrality & Materials Digitalization Division, Korea Institute of Ceramic Engineering & Technology)
Sun, Ju-Hyeong (Research Institute, PLUS Manager)
Jang, Geun-Yong (Research Institute, PLUS Manager)
Choi, Joon-Chul (Dream mining)
Kwon, Wooteck (Carbon Neutrality & Materials Digitalization Division, Korea Institute of Ceramic Engineering & Technology)
Publication Information
Resources Recycling / v.31, no.5, 2022 , pp. 52-58 More about this Journal
Abstract
Silicon carbide powder was prepared from carbon black and silicon recovered from waste solar panels. In the solar power generation market, the number of crystalline silicon modules exceeds 90%. As the expiration date of a photovoltaic module arrives, the development of technology for recovering and utilizing silicon is very important from an environmental and economic point of view. In this study, silicon was recovered as silicon carbide from waste solar panels: 99.99% silicon powder was recovered through purification from a 95.74% purity waste silicon wafer. To examine the synthesis characteristics of SiC powder, purified 99.99% silicon powder and carbon powder were mixed and heat-treated (1,300, 1,400 and 1,500 ℃) in an Ar atmosphere. The characteristics of silicon and silicon carbide powders were analyzed using particle size distribution analyzer, XRD, SEM, ICP, FT-IR, and Raman analysis.
Keywords
solar waste panel; silicon; purification; heat treatment; silicon carbide powder;
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