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Solar cell prod'n ready for Metal Wrap Through tech

Posted: 25 Feb 2013 ?? ?Print Version ?Bookmark and Share

Keywords:Metal Wrap Through? solar cell? double printing? selective emitter?

According to EnergyTrend, a research arm of TrendForce, solar cell and module makers will be more active in improving product efficiency under the pressure of both installation costs and subsidy cut. Additionally, Metal Wrap Through (MWT) technology has received favourable acceptance and is possible that the mass production stage takes place this year.

Related industries indicated that the competition between Taiwan and Chinese manufacturers on solar cell production has been incessant. The mainstream technology among the industry is mostly covered by Double Printing and Selective Emitter. The market has demanded, however, that the cost of power generation per watt be reduced, and the improvement in efficiency supported by the present mainstream technology may not be able to meet the needs of the market. Therefore, related industries have started to act more aggressively in the estimation and import of new technologies.

They indicated that among many proposals, MWT technology stands out because it creates only a very low degree of interference in the existing manufacturing process, and changes in the production line would only include the increase of single station equipment. Moreover, both the enhanced efficiency of the effective area at the surface and the absolute conversion efficiency of the solar cell are incentives to the industries, and the package power loss of the module could also be further improved. In addition, the high cost of module package has declined in recent years, resulting in a decrease in the production cost per watt.

Due to the advantages listed above, MWT technology has become the priority choice among manufacturers. According to the observations of EnergyTrend, some of the Chinese and Taiwan manufacturers have already entered the R&D and Pilot Run stage, and the mass production stage is forecasted to take place in 2H13. However, the analysis of EnergyTrend also indicated that in order to carry out MWT technology, solar cell manufacturers must coordinate with module manufacturers. Thus, the MWT technology production time of Chinese manufacturers would be shorter than that of Taiwan manufacturers. This would likely become a disadvantage for Taiwan manufacturers.

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