Review of New Technology for Preparing Crystalline Silicon Solar Cell Materials by Metallurgical Method

2017 3rd International Conference on Energy, Environment and Materials Science

能源学;生态环境科学;材料科学

Li, Man^1,2,3 ; Dai, Yongnian^1,2,3 ; Ma, Wenhui^1,2,3 ; Yang, Bin^1,2,3 ; Chu, Qingmei^1,2,3

The National Engineering Laboratory of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming

650093, China^1

Key Laboratory of Non-ferrous Vacuum Metallurgy of Yunnan Province, Kunming

650093, China^2

Faculties of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming

650093, China^3

关键词: Cell conversion efficiency;    Crystalline silicon solar cells;    Crystalline silicons;    Effects of impurities;    Low energy consumption;    Metallurgical process;    Quality requirements;    Solar cell materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/94/1/012016/pdf
DOI  :  10.1088/1755-1315/94/1/012016

来源: IOP

【 摘 要 】

The goals of greatly reducing the photovoltaic power cost and making it less than that of thermal power to realize photovoltaic power grid parity without state subsidies are focused on in this paper. The research status, key technologies and development of the new technology for preparing crystalline silicon solar cell materials by metallurgical method at home and abroad are reviewed. The important effects of impurities and defects in crystalline silicon on its properties are analysed. The importance of new technology on reducing production costs and improving its quality to increase the cell conversion efficiency are emphasized. The previous research results show that the raw materials of crystalline silicon are extremely abundant. The product of crystalline silicon can meet the quality requirements of solar cell materials: Si ≥ 6 N, P1 Ω cm, minority carrier life > 25 μs; cell conversion efficiency of about 19.3%, the product costs