Scientists at the Singapore Solar Energy Research Institute have developed a new wet chemistry method that can use diamond wire saw technology to cut polysilicon wafers and then texture it to reduce reflectivity.
Scientists from National University of Singapore SERIS hold batteries and wafers made with their new DWS process
This wet chemistry method etched the surface of the wafer at a nanoscale feature size, thereby increasing the number of times the light reflects the surface and the chance of being absorbed by the wafer material. The process uses patented chemicals that are low cost and scalable, and are extremely easy to use. Is integrated into the battery production line.
SERIS believes that its new process offers more benefits to manufacturers than the 'black silicon' process. It means that their technology is 'simpler, cheaper, and metal-free, with a battery efficiency of more than 20%'. , It has the potential to become a popular texture technology widely used by polysilicon solar cell manufacturers.
According to SERIS, this process has been approved by several first-tier manufacturers. The agency is prepared to work closely with these manufacturers to expand it to large-scale production lines.