Novel recycling method for boron removal from silicon by thermal plasma treatment coupled with steam and hydrogen gases

Su Hyun Baek, Hyunjae Lee, Dong Joon Min, Su Ji Choi, Byung Moon Moon, Hyun Do Jung

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Boron (B) separation from photovoltaic silicon (Si) remains a research challenge in the recycling field. In this study, a novel B-removal process was developed using thermal plasma treatment coupled with steam and hydrogen gases. Experiments were performed on artificially B-doped Si using various plasma conditions of mixed argon (Ar)/steam/hydrogen gases and varied refining time. The B concentration in all of the samples decreased with increasing refining time. The use of the plasma mixed with Ar/steam/hydrogen gases resulted in a significant improvement of the efficiency of B removal compared with the Ar/steam plasma refining. In addition, with increasing steam content in the plasma with mixed Ar/steam/hydrogen gases, the B-removal rates increased.

Original languageEnglish
Article number401
JournalMetals
Volume7
Issue number10
DOIs
Publication statusPublished - 2017 Oct

Bibliographical note

Funding Information:
Acknowledgments: This work was supported by the Nuclear Power Core Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) (Grant no. 20141710201690) and Basic Science Research Program (No. 2015R1D1A1A01057311) through the National Research Foundation of Korea and the International Cooperative R&D program (N0001243_Reuse silicon from Photovoltaic Waste) through the Ministry of Trade, Industry and Energy (MOTIE) and Korea Institute for Advancement of Technology (KIAT).

Publisher Copyright:
© 2017 by the authors.

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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