Purification of low quality silicon feedstock

被引：1

作者：

Einhaus, R ^{[1
]}

Sarti, D ^{[1
]}

Hässler, C ^{[1
]}

Trassy, C ^{[1
]}

Delannoy, Y ^{[1
]}

De Wolf, S ^{[1
]}

Ferrazza, F ^{[1
]}

Martinuzzi, S ^{[1
]}

Warta, W ^{[1
]}

机构：

[1] Photowatt Int, F-38300 Bourgoin Jallieu, France

来源：

CONFERENCE RECORD OF THE TWENTY-EIGHTH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE - 2000 | 2000年

关键词：

D O I：

10.1109/PVSC.2000.915795

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 [动力工程及工程热物理]; 0820 [石油与天然气工程];

摘要：

In the frame of the European ARTIST project, purification techniques have been developed that allow to use alternative silicon feedstock sources for PV production: (i) Very low resistivity (0.08-0.1 Omega cm) (VLR-) silicon material was produced by directional solidification, resulting in solar cells of 14.5% efficiency, (ii) an inductive plasma purification unit was developed, demonstrating a significant reduction of B, P, C, O, Ca, and Al impurities from upgraded metallurgical grade silicon, (iii) an Sb evaporation/condensation process was established to allow heavily doped n-type silicon feedstock to be used for PV, resulting in an average reduction of Sb by a factor of more than 100 after evaporation and directional solidification and in solar cell efficiencies above 15.5%. This paper summarises the technical state-of-the-art that has been achieved until present with respect to the above mentioned techniques.

引用

页码：221 / 224

页数：4