Yingli Solar has announced the completion of trial production of monocrystalline ingots using new material technology.
Yingli Solar estimates that the new material will reduce manufacturing costs by 0.01 USD per watt.
The Company has experimented with crucibles made from a carbon-carbon (C-C) composite material instead of using graphite crucibles when pulling monocrystalline ingots.
Shifting to C-C composite crucibles will help in reducing cost and improve the stability of crystal pulling with a rise in utilization rate of monocrystalline silicon ingots by 3 percent.
Graphite crucibles are commonly used in monocrystalline ingot formation. But they are prone to cracking during the heating process due to low strength, short lifetimes, and have a risk of silicon leakage.
On the other hand, C-C composite crucibles are not as vulnerable to these risks as they are made from reinforced carbon fiber matrix with low-density, high-strength, high thermal conductivity, thermal shock resistance, and dimensional stability.
The pursuit of manufacturing processes has played a key role in Yingli’s growth trajectory. By improved efficiency, reduced costs, and deliver quality, maximum value for partners are brought with affordable green energy, said, Liansheng Miao, chairman, CEO, Yingli Green Energy.
editor@greentechlead.com