The Continuous Growth of Bulk Si by Temperature Gradient Zone Melting Method

• Autorzy: Li Jiayan , Wang Liang , Hao Jianjie , Ni Ping , Tan Yi

Identyfikatory

DOI

10.24425/amm.2019.126248

• Języki publikacji: EN

Abstrakty

EN

Temperature gradient zone melting (TGZM) method was used to obtain bulk Si continuously for the efficient separation and purification of primary Si from the Si-Al alloy in this work. The effects of alloy thickness, temperature gradient and holding time in TGZM purification technology were investigated. Finally, the continuous growth of bulk Si without eutectic inclusions was obtained. The results showed that the growth rate of bulk Si was independent of the liquid zone thickness. When the temperature gradient was changed from 2.48 K/mm to 3.97 K/mm, the growth rate of bulk Si was enhanced from 7.9×10^-5 mm/s to 2.47×10^-4 mm/s, which was increased by about 3 times. The bulk Si could grow continuously and the growth rate was decreased with the increase of holding time from 1 h to 5 h. Meanwhile, low refining temperature was beneficial to the removal of impurities. With a precipitation temperature of 1460 K and a temperature gradient of 2.48 K/mm, the removal rates of Fe, P and B were 99.8%, 94.0% and 63.6%, respectively.

Słowa kluczowe

EN

bulk Si; TGZM; Si-Al alloy; growth rate; impurities

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2019
• Tom: Vol. 64, iss. 1
• Strony: 271--278
• Opis fizyczny: Bibliogr. 30 poz., fot., rys., tab.

Twórcy

autor

Li Jiayan

• Dalian University of Technology, School of Materials Science and Engineering, Dalian 116024, China
• Dalian University of Technology, Key Laboratory for Solar Energy Photovoltaic System of Liaoning Province, Dalian 116024, China

autor

Wang Liang

• Dalian University of Technology, School of Materials Science and Engineering, Dalian 116024, China
• Dalian University of Technology, Key Laboratory for Solar Energy Photovoltaic System of Liaoning Province, Dalian 116024, China

autor

Hao Jianjie

• Dalian University of Technology, School of Materials Science and Engineering, Dalian 116024, China
• Dalian University of Technology, Key Laboratory for Solar Energy Photovoltaic System of Liaoning Province, Dalian 116024, China

autor

Ni Ping

• Dalian University of Technology, School of Materials Science and Engineering, Dalian 116024, China
• Dalian University of Technology, Key Laboratory for Solar Energy Photovoltaic System of Liaoning Province, Dalian 116024, China

autor

Tan Yi

• Dalian University of Technology, School of Materials Science and Engineering, Dalian 116024, China
• Dalian University of Technology, Key Laboratory for Solar Energy Photovoltaic System of Liaoning Province, Dalian 116024, China

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Uwagi

EN

1. This program is financially supported by National Natural Science Fundation of China (Grant No. 51574057).

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).