Risen Energy's Advances in Ultra-Thin Wafers for Solar Technology

Risen Energy Co., Ltd, based in Ningbo, China, reveals strides in ultra-thin silicon wafers for Heterojunction (HJT) solar cells. As space photovoltaics gain attention, the need for lightweight, high-output, radiation-resistant, and reliable solar panels becomes clear. Risen Energy's technology answers these challenges by using ultra-thin wafers to reduce costs and enhance performance.

The company's white paper highlights how thinning silicon wafers, which constitute 55% of HJT solar cell costs, is central to economic and technological advances. These wafers are processed at low temperatures, reducing risk and enhancing symmetry, thus proving advantageous over traditional PERC and TOPCon cells.

Experiments show wafer thinning impacts efficiency minimally, with results exceeding 26.6% using 110 μm wafers. Manufacturing innovations have stabilized yield rates above 99.5%, improving flexibility and reliability for various applications, including potential space uses.