Direct Carbothermic Silica Reduction from Purified Silica to Solar-Grade Silicon

Tunisia-Japan Symposium: R&D of Energy and Material Sciences for Sustainable Society

能源学;材料科学;政治学;社会学

Itaka, Kenji^1 ; Ogasawara, Takuya^1 ; Boucetta, Abderahmane^1 ; Benioub, Rabie^1 ; Sumiya, Masatomo^2 ; Hashimoto, Takuya^3 ; Koinuma, Hideomi^4 ; Furuya, Yasubumi^1

North Japan Research Institute for Sustainable Energy, Hirosaki University, 2-1-3, Matsubara, Aomori

030-0813, Japan^1

Widegap Materials Group, National Institute for Materials Science, Tsukuba

305-0044, Japan^2

College of Humanities and Sciences, Nihon University, 3-25-40 Sakurajousi, Setagaya-ku, Tokyo

156-8550, Japan^3

Graduate School of Frontier Sciences, University of Tokyo, Kashiwa

277-8568, Japan^4

关键词: Carbothermic;    Combinatorial method;    Low costs;    Mass production process;    Metallurgical process;    Research and development;    Silicon reduction;    Solar grade silicons;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/596/1/012015/pdf
DOI  :  10.1088/1742-6596/596/1/012015

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The shortage of silicon for solar cells has much attract in research and development of the low cost mass production process of solar grade Silicon (SOG-Si). The key of the strategy to silicon for solar cells in long terms is the efficiency in reduction. We developed a new concept reduction furnace using the combinatorial method in order to investigate the metallurgical process for silicon reduction. The production of reduced Si shows purity with less 2ppm level.