Researchers at the Singapore Solar Energy Research Institute (SERIS) at the National University of Singapore announced that they have developed a very low-cost technology for nano-fabrication of diamond wire polysilicon wafer cutting (mc-Si).
The Solar Energy Institute of Singapore points out that the widely used diamond wire polycrystalline silicon wafers have limited cutting due to the expensive etching process and reduced conversion efficiency. Reactive ion etching (RIE) is not a low-cost process, but metal-catalyzed chemical etching (MCCE) technology Will increase the metal particle contamination.
Dr. Huang Ying, the chief inventor of the DWS wafer weaving technology at the Solar Energy Research Institute of Singapore, said: 'Our technology is simpler, cheaper, we don't use metal, and the efficiency of the battery exceeds 20%. For these reasons, I firmly believe that we The technology will become the mainstream wool technology used by polysilicon solar cell manufacturers.
The Solar Energy Institute of Singapore wet chemistry technology uses proprietary chemicals to etch the surface of polysilicon wafers to generate nanoscale features that are smaller than the incident light wavelength, which enhances light capture and has the potential to achieve 20% conversion efficiency of polysilicon solar cells.
The Singapore Solar Energy Institute pointed out that this battery conversion efficiency is about 0.5% (absolute value) higher than the current battery production efficiency of the leading photovoltaic manufacturers.
Dr. Joel Li, head of the Polysilicon Solar Panel at Singapore Solar Energy Research Institute added: 'We have used our technology to solve the long-term challenges faced by the photovoltaic industry. This technology has proven to be an effective low-cost process for the DWS polysilicon sheeting process. Methods. The photovoltaic industry can use our technology to convert from slurry cutting to cheaper DWS polysilicon wafers, and the price will be reduced by 5-15%. For a gigawatt-level plant, this means savings of 10 million annually. The cost of dollars. In a cost-sensitive industry such as photovoltaics, this level of cost savings is very attractive.
Professor Armin Aberle, CEO of the Singapore Solar Energy Research Institute, said, 'This low-cost texturing method has great potential to promote significant cost reductions in the photovoltaic industry and has been approved by a number of Tier 1 manufacturers. The Singapore Solar Energy Institute plans to The technology was licensed to and worked closely with interested manufacturers and used and upgraded in these companies' production lines. This year, as the photovoltaic industry experienced a major shift from the slurry cutting to DWS polysilicon wafers, we believe Singapore Solar The new technology developed by the Institute will become the mainstream of DWS polysilicon film technology.
