GCL-Poly touts FBR silicon matching Siemens procedure on purity
- Significant polysilicon producer GCL-Poly has actually asserted its FBR (Fluidized Bed Reactor) granular polysilicon has actually accomplished monocrystalline purity needs at its 10,000 MT FBR plant, using considerable carbon footprint advantages over the standard process utilized for mono-wafer production.
GCL-Poly stated in a financial filing that its FBR created silicon had actually met a variety of top quality standards in-line with the Siemens procedure, while in certain parameters outmatching the thick silicon products.
However, GCL-Poly noted that the yield of granular silicon was reaching about 99%, yet 90% of the return fulfilled monocrystalline material needs.
The other big benefit at this stage for FBR is the reduction in total energy usage of the production procedure, which the company asserted had a reduced (10-- 12%) rate than the Siemens procedure.
GCL-Poly claimed that at the 10,000 MT plant a total power intake price of not greater than 20kWh/kg was achieved.
Utilizing FBR silicon would certainly additionally profit PV module suppliers' carbon impacts, according to GCL-Poly. The reduce CO2 emission by 130,000 tonnes, which is 74% less than that of Siemens.
The business claimed that CO2 emissions in generating 1GW of PV modules making use of FBR silicon would have decreased CO2 emission by a minimum of 47.7%. This was said to be based upon actual manufacturing information internal within the team.
GCL-Poly additionally kept in mind that with its 30,000-tonne production line it anticipates additional enhancements in the use performance and doping proportion of the hydrogen web content in granular silicon. At its 10,000 MT plant, GCL-Poly claimed that it had actually accomplished minimized hydrogen material to below 20ppma.
GCL-Poly has stood firm with FBR innovation for years yet had not ramped ability, largely because of the purity issues even for multicrystalline wafer manufacturing that had controlled the industry.
The fast shift to mono-wafer dominance was a danger to the FBR process as mono-wafer purity needs surpass those for multi-wafers.