Latest PV roadmap for advanced battery materials and concepts

Polaris solar PV net news: the sixth edition of the international photovoltaic technology roadmap released, demonstrated in crystalline silicon PV value chain the key to continued cost-cutting measures.

Same as the previous version, the Roadmap identifies reduction of material costs, improve production process and the transition to advanced cell technology as a big target in the sector, in order to remain competitive.

Years in the industry after a difficult period, the road map report, as companies continue to strive to reduce cost in the value chain in 2014, they began to turn a profit.

The road map report, the so-called price curve, seen in history is that every doubling cumulative shipments of PV modules, average selling prices declined by about 21%, will continue in the coming years. Defining the concept of a new duplex and single-sided contact battery introduced, coupled with improved behind before wafer, cell and module technology as a key driver towards goal.


The roadmap pointed out, polycrystalline silicon remains the most expensive material for crystalline silicon solar module, therefore continues to be the focus of further cost cuts.

Same as before, the roadmap is relative to the expected technology from Siemens, fluidized bed reactor technology will increase its share. Other processes, such as upgraded metallurgical-grade silicon, is expected in the foreseeable future than conventional technology does not produce any significant cost advantages, but will continue to be used in the market.

In the production of silicon wafers, the roadmap pointed out that savings through thinner silicon wafers can yield decrease losses, increase the recovery rate. As the demand for thinner wafer becomes more important, 2025, diamond wire saw is expected to significantly increase its market share.


Latest roadmap confirms expectations of previous versions, which gradually shift from p to n-type Silicon market. Over time more p-n to achieve more efficient technologies.

In addition, however, the road map is expected, Si module efficiency in the production of more than 20%. Points out that all cell technologies has “tremendous potential” evolved over time to improve performance.

In the area of advanced technology, the roadmap is expected to double-sided contact solar cell concepts is a mainstream market, PERC battery back surface field solar cell received a lot of market share.

In addition, by 2025 hetero-junction solar cells are expected to gain market share as high as 10%. Another leader is both sides of double-sided photo cell structures. The road map is expected by 2025 two-sided cells will grow to around 20%.

To sum up, the road map is expected in 2015, yields to 60GW. It is expected to increase by 2022 to 80GW in 2030 and rose to a peak of 220GW. Since then, demand will fall again, to 2040 for 150GW by 2050 minimizes 100GW.

This roadmap shows that this model revealed for the PV module market was not “open-ended” and therefore would not require “open-ended” capacity. But, as long as the manufacturers can continue to innovate and develop competitive and reliable Silicon power generation products, PV in coming years will be a “significant” market.

Original title: latest materials in PV roadmap and advanced battery concept

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