Boron removal for solar-grade silicon production by metallurgical route:A review

被引：73

作者：

Chen, Hui ^{[1
,2
]}

Morita, Kazuki ^{[2
]}

Ma, Xiaodong ^{[3
]}

Chen, Zhiyuan ^{[4
]}

Wang, Ye ^{[1
]}

机构：

[1] Sichuan Univ, Sch Chem Engn, Chengdu 610065, Sichuan, Peoples R China

[2] Univ Tokyo, Dept Mat Engn, Bunkyo Ku, Tokyo 1138654, Japan

[3] Univ Queensland, Sch Chem Engn, Brisbane, Qld 4072, Australia

[4] Delft Univ Technol, Dept Mat Sci & Engn, NL-2628 CD Delft, Netherlands

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2019年 / 203卷

基金：

中国国家自然科学基金;

关键词：

Solar-grade silicon; Boron removal; Slag treatment; Solvent refining; Gas injection; AL-SI ALLOY; LIFE-CYCLE ASSESSMENT; MOLTEN SILICON; REFINING PROCESS; MASS-TRANSFER; B REMOVAL; THERMODYNAMIC PROPERTIES; DIFFUSION-COEFFICIENTS; REACTION-MECHANISM; SLAG SYSTEM;

D O I：

10.1016/j.solmat.2019.110169

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Solar energy has received considerable attention over the past few decades, due to its importance as a green and renewable energy. Low-cost solar-grade silicon production is critical for the widespread use of solar cells. Conventional routes (e.g., modified Siemens process: chlorosilane and hot filament) have still dominated the production of solar-grade silicon. The metallurgical route offers benefits in the productivity and cost, but efficient removal of boron is one of the most daunting challenges in front of us. This paper reviews thermodynamic and kinetic properties (solubility, diffusivity, diffusion coefficients, mass transfer rate, and activity coefficient) of boron and recent research topics (slag treatment, solvent refining, gas injection, plasma treatment, and acid leaching) for boron removal.

引用

页数：12

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