Effect of compensation and of metallic impurities on the electrical properties of Cz-grown solar grade silicon

2008 ◽  
Vol 104 (10) ◽  
pp. 104507 ◽  
Author(s):  
Joris Libal ◽  
Sara Novaglia ◽  
Maurizio Acciarri ◽  
Simona Binetti ◽  
Roman Petres ◽  
...  
2021 ◽  
Vol 127 (6) ◽  
Author(s):  
Mohamed Maoudj ◽  
Djoudi Bouhafs ◽  
Nacer Eddine Bourouba ◽  
Abdelhak Hamida-Ferhat ◽  
Abdelkader El Amrani

2010 ◽  
Vol 207 (8) ◽  
pp. 1807-1810 ◽  
Author(s):  
Daniel Macdonald ◽  
Fiacre Rougieux ◽  
Yves Mansoulie ◽  
Jason Tan ◽  
David Paterson ◽  
...  

2013 ◽  
Vol 690-693 ◽  
pp. 949-953
Author(s):  
Ming Fang ◽  
Cheng Hao Lu ◽  
Hui Xian Lai ◽  
Liu Qing Huang ◽  
Juan Chen ◽  
...  

The distribution of impurities in metallurgical grade silicon before and after slag treatment was investigated for the purpose of upgrading metallurgical grade to solar grade silicon. It was found that metal impurities co-deposited with silicon and formed different intermetallics in the precipitated phase, and these intermetallics such as Si-Fe, Si-Ni, Si-Ti-V and Si-Ca-Al-Fe were substituted by Si-Fe-Ti-V after treatment of Na2CO3-SiO2 slag. Non-metallic impurities B and P were nearly homogeneous distribution in metallurgical grade silicon before and after slag treatment. Moreover, a particular analysis of the microstructure of slag has been carried out, it was determined that metal impurities Al and Ca could easily migrate from silicon to slag phase in the refining process.


2007 ◽  
Vol 253 (12) ◽  
pp. 5341-5344 ◽  
Author(s):  
M. Hajji ◽  
M. Hassen ◽  
H. Ezzaouia ◽  
A. Selmi ◽  
H. Bouchriha

2011 ◽  
Vol 324 ◽  
pp. 324-327 ◽  
Author(s):  
Sarah Darwiche ◽  
Malek Benmansour ◽  
Nir Eliezer ◽  
Daniel Morvan

Laser-induced breakdown spectroscopy (LIBS) has been employed for the fast and reliable chemical characterization of silicon used for the photovoltaic industry. Silicon for photovoltaic panels is subject to certain constraints on its purity, and notably must contain low concentration of boron. The use of LIBS could be advantageous because it allows rapid and simultaneous multi-elemental chemical analysis of silicon without any sample preparation. LIBS was applied to boron analysis and a detection limit of 0.23 ppmw was found for optimized gas and pressure conditions.


2021 ◽  
Author(s):  
Katie Singer

<div> </div><div>To move forward with substantial, constructive actions that reduce overall consumption and emissions, the public, scientists and policymakers need agreement about our terms. Terms like "sustainability," "zero-emissions" and "carbon-neutrality" tend to focus on a device or vehicle's energy use and emissions during operation--and to exclude energy use and emission during extraction, smelting, manufacturing and recycling or discard. What do such exclusions mean for e-vehicles, smartphones and solar panels? How can we encourage learning about and reducing electronics' true costs? Katie Singer will describe the process involved in manufacturing electronic-grade silicon (similar to solar-grade silicon), and propose that every Internet user learn the international supply chain of one substance (of 1000+) in their device. She will also propose ways to counterbalance a digital footprint. </div>


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