US Natcore said that it is developing low-temperature production process for photovoltaic cells

The U.S.-based company Natcore Technology Inc. has recently unveiled a groundbreaking laser processing technology aimed at replacing the traditional high-temperature diffusion furnaces used in solar cell manufacturing. The company claims this innovation could significantly cut down on energy and chemical costs, which are typically associated with the energy-intensive diffusion process. As part of its strategy, Natcore is acquiring advanced laser technology to integrate into its research and development center located in Rochester, New York. According to Natcore, the laser doping method works by directing a focused laser beam onto a silicon wafer. Initially, only a minimal amount of dopant is applied to the surface. Then, the laser beam melts the silicon, allowing the dopant to diffuse into the material as it re-solidifies. This microsecond-level process provides sufficient time for effective doping without requiring prolonged exposure. The company emphasizes that one of the key advantages of using lasers is their ability to deliver precise energy to specific areas of the silicon wafer. This targeted heating ensures that only the necessary parts are affected, leading to improved solar cell efficiency. Additionally, since the entire solar cell and surrounding equipment don’t need to be heated, the overall manufacturing capacity required is reduced, making the process more efficient and less resource-intensive. Chuck Provini, President and CEO of Natcore, stated, “We have completely rethought the way we produce solar cells. By reducing the number of costly manufacturing steps and eliminating the use of hazardous and expensive chemicals like silanes and phosphoryl chloride, we are paving the way for a cleaner, more efficient production line. We are currently developing a cryogenic process, although we haven’t quantified its benefits yet. However, we believe it will ultimately lead to lower costs, higher efficiency, and better overall product quality.” This new approach not only addresses environmental concerns but also aligns with the growing demand for sustainable and cost-effective solar energy solutions. As the industry continues to evolve, innovations like these are expected to play a crucial role in shaping the future of renewable energy.

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