Success factors of monocrystalline technology in the PV market

Diamond wire saw with monocrystalline silicon ingot
A main driver for reduced costs of monocrystalline silicon ingots has been increased pulling speed – Image: Meyer Burger Technology

An interesting background article of pv magazine illustrates the technological progress that has facilitated the current upswing of monocrystalline silicon in the PV market.

Additional technical details on the topic have been provided by Xiaodong (Bond) Wang in a LinkedIn post.

Main drivers for cost reduction in pulling monocrystalline ingots have been, among many other incremental improvements, a significantly increased pulling speed, the rechargeable Czochralski process (RCz, also known as multi-pulling) as well as larger crucibles and hot zones.

Regarding the claimed advantage of mono-PERC over multi-PERC solar cells in terms of light and elevated temperature-induced degradation (LeTID), however, new results from the field justify some doubts.

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