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Monocrystalline Silicon Outperforms Polycrystalline Silicon

At present, it has become a trend for monocrystalline slicing to adopt diamond wire slicing. The distinctive features of diamond wire is that it can cut silicon wafer into more thin pieces and highly effective.

From: iAbrasive.comDate: 2014-08-05 10:34:23Views: 241

At present, it has become a trend for monocrystalline slicing to adopt diamond wire slicing. The distinctive features of diamond wire is that it can cut silicon wafer into more thin pieces and highly effective. Use water as coolant, Diamond wire cutting speed is twice as fast as that of ordinary steel wire. Besides, diamond wire is small in diameter and convenient for cutting thinner silicon wafer. According to iAbrasive, currently mainstream cutting thickness is 190±10 micrometer. With battery technology improves, much thinner silicon wafer will become a predominant trend.

Silicon single crystal rod can be applied in diamond wire scale to facilitate thinner silicon wafer and still lower consumption for each silicon wafer piece. iAbrasive has learned that current single tile silicon consumption is around 4.3 grams and the number is expected to be much lower. Besides, diamond wire equipment fixed investment has taken on a declining trend annually, at present cost is only one fifth of the peak period.

While polycrystalline silicon cost margins drop is limited, monocrystalline silicon has broader conversion efficiency space, which will form an influence on cost. Each percentage point increase in conversion efficiency will reduce solar power station system cost by 7%.

Monocrystalline silicon battery efficiency lab world record is 24.7%, while that of polycrystalline silicon is 20.4%. For the moment, large-scale industrial production conversion efficiency ia around 19% to 20%, high efficiency monocrystalline can reach 23% to 24%, while polycrystalline is only around 17% to 18%. In short, Monocrystalline silicon battery efficiency has broader improvement space.

See more at: http://www.iabrasive.com/.

 

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