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

The United States Natcore Technology Inc. recently announced the development of a laser processing technology to replace the high-temperature diffusion furnace in the solar cell process. The company believes the program is expected to reduce the costs of energy and chemical materials associated with diffusion furnaces. Natcore said it is acquiring a laser technology for use in its R&D center in Rochester, New York.

Natcore pointed out that the working principle of laser doping is mainly to emit a focused laser beam on a silicon wafer. At first, only a small amount of dopant falls on the surface. Subsequently, the laser beam is dissolved in silicon and re-solidified. The microsecond process has enough time to complete the doping process.

Natcore said that because the laser energy can transfer energy to a concentrated area, so only the part of the silicon wafer that needs to be heated gets heat energy, which can make the conversion efficiency of solar cells higher. In addition, in view of the fact that it is not necessary to heat the entire solar cell and the surrounding diffusion furnace, the required capacity for manufacturing a solar cell is reduced.

Natcore president and chief executive officer Chuck Provini said: “We re-planned the way we make solar cells. We reduced the number of photovoltaic cells by reducing costly manufacturing steps and eliminating the use of hazardous and expensive chemicals such as silanes and phosphoryl chloride. The production process. At present, we are developing a cryogenic process. Although we cannot quantify it yet, we believe that the end result will reduce costs and increase efficiency and overall quality."

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