University of New South Wales develops new technology to enhance low-grade silicon materials in photovoltaic production

University of New South Wales develops new technology to enhance performance of low-grade silicon materials in photovoltaic production

Professor Stuart Wenham

On May 6, 2013, the University of New South Wales announced that its solar engineers have developed an innovative solution that can improve the quality of low-grade silicon materials, which not only improves conversion efficiency but also cuts the cost of solar panels.

Stuart Wenham, a professor of Photovoltaic and Renewable Energy Engineering at the University of New South Wales, said: "The process can make lower-quality silicon materials perform better than solar cells made from high-quality materials."

Solar cell efficiency is expected to be between 21%-23%

Researchers have developed a mechanism to control hydrogen atoms, allowing it to better correct defects in silicon materials (to date, the most expensive components for making solar cells).

Wenham added that at present, the maximum conversion efficiency of standard commercial silicon cells is about 19%, and the new technology is expected to increase efficiency to 21%-23%.

Hydrogen atoms can usually exist in three "charged" states: positive, medium, and negative. The state of charge determines the state and reaction of hydrogen atoms traveling in silicon—an important part of helping to correct defects.

Wenham pointed out: "In the course of the flow of hydrogen atoms, we have discovered nearly 10,000 signs of improvement. We can control the activities of hydrogen atoms and link them with pollutants and other substances like defects, rendering them ineffective. ”

Currently, UNSW has eight partners interested in the commercialization of technology and is committed to working with manufacturing equipment companies to commercialize new technologies.

The project is supported by the Australian Renewable Energy Agency and is expected to be completed in 2016. (Translator: Krystal)

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