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Technological innovation copper will become the photovoltaic material of choice of silver oars?

OFweek solar photovoltaic Reuters, Lux Research (Lux Research) has said that emerging technologies will reduce the PV metallization costs and improve process yield. Overall, the copper has been known as the "most appropriate metallization winner.

Lux Research report entitled "photovoltaic metallization of the key issues and innovative" new report talked about the innovative new technologies, including copper metal, nickel phosphide and non-contact printing technology, may be used instead of silver, reduce the cost of up to 50%.

The company said that the silver in the past 10 years costs have risen six-fold, setting a record of about $ 30 an ounce, which means that the related companies had to find other ways to reduce the use of silver. "Compared with traditional screen-printing technology, printing tools for application materials can be a 30% reduction in the use of the absolute efficiency of the cells and from 0.3% to 0.5%, to provide the most cost-effective technology, but the technology road is not only stay there, "said Lux ??Research.

Copper production and use of experience in the semiconductor industry has been established, a "reasonable" alternative of the silver material will continue to be copper. Based on this, of IMEC (Microelectronics Research Center) PV Business Development Director, Philip Peter, told reporters in December last year, last year, the use of copper metal in the crystalline silicon solar cells IMEC’s ??key activities and Kaneka (Japan Kaneka one of the chemical) company crystalline silicon photovoltaic research and development program.

He added that the use of commercial cell production of copper in much earlier than a lot of ideas. Just recently, the two companies through the use of electroplating copper contact with the gate, in a 6 in. square heterogeneity of crystalline silicon solar cell conversion efficiency of 22.68%.

Lux Research, however, said that the copper paste "needs further development because of their lag in battery performance and long-term durability; Napra and Japan’s National Institute of Advanced Industrial Science and Technology opened the way for us, but others need for practical copper technology in the grain silicon and CIGS photovoltaic open a new way. "

At the same time, he added, phosphide (Ni2P) will be widely applied to the metal back contact cells of cadmium telluride. "Ni2 P at high temperatures to show its durability, annealing, and does not require expensive materials, it can be a little to cut costs and significantly increase production," he said.

Lux went on to say that the the metallization innovation also help to improve the crystalline silicon, copper indium gallium selenide and cadmium telluride (CdTe) technology, the process yield.

"In the future PV winner will reduce production costs and maintain sustainable profitability profit companies. Metallization is to drive greater efficiency, lower production costs and increase production of key materials, the Lux Research analyst and report lead author Fatima The Toor Speaking.

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