1. Faculty of Metallurgical and Energy Engineering/State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and Technology Kunming 650093 China
2. Silicon Material Industry Research Institution (Innovation Center) of Yunnan Province Kunming 650093 China
3. School of Materials Science and Engineering Yunnan University Kunming 650091 China
4. School of Science and Technology Pu'er University Pu'er 665000 China