Silicon purification melting for photovoltaic applications

Avyle, J.A. Van Den; Ho, Pauline; Gee, J.M.

doi:10.2172/753379

Cited by 1 publication

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As another illustration of the failed NH 3 gas blowing treatment, Van Den Avyle et al [29] used SiO 2 crucible in the experiment. SiO 2 introduced the same level of oxygen into the system and acts as slag in Equation (2).…”

Section: Combining Nh 3 Blowing With Slaggingmentioning

confidence: 99%

Exploration of boron removal from molten silicon by introducing oxygen resources into ammonia blowing treatment

Chen

You

Morita

2018

Canadian Metallurgical Quarterly

View full text Add to dashboard Cite

Ammonia gas blowing has been successfully applied to the silicon refining process for boron removal. Molten iron catalyst could effectively promote the boron removal ratio in the progress. It inspired the attempt of combining ammonia blowing with other refining treatments. Oxygen resources were introduced into the process in order to further decrease the boron content in silicon. However, neither slagging + ammonia blowing nor humidification + ammonia blowing shows a significant positive improvement in the silicon refining process, respectively. The experimental results implied that the introduction of oxygen sources into the ammonia system would decrease boron nitride activity or produce Si 2 N 2 O which retard the efficient generation of boron-bearing volatiles. RÉSUMÉ On a appliqué avec succès le soufflage de gaz ammoniac au procédé d'affinement du silicium pour l'enlèvement du bore. Le catalyseur de fer fondu pouvait effectivement promouvoir le rapport d'enlèvement de bore au cours de ce procédé. Ceci a inspiré la tentative de combiner le soufflage d'ammoniac avec d'autres traitements d'affinage. On a introduit des sources d'oxygène dans le procédé afin de réduire davantage la teneur en bore du silicium. Cependant, ni la scorification + le soufflage d'ammoniac ni l'humidification + le soufflage d'ammoniac montrent une amélioration positive importante du procédé d'affinage du silicium, respectivement. Les résultats expérimentaux impliquaient que l'introduction de sources d'oxygène dans le système d'ammoniac diminuerait l'activité du nitrure de bore ou produirait du Si 2 N 2 O, lesquels retardent la production efficace de volatils porteurs de bore.

show abstract

Section: Combining Nh 3 Blowing With Slaggingmentioning

confidence: 99%