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18th May 2013

Largest solar cell printer can make a new panel every two seconds

Scientists have produced the largest flexible, plastic solar cells in Australia – 10 times the size of what they were previously able to – thanks to a new printer installed at CSIRO, the country's national science agency.

 

 

The printer has allowed researchers from the Victorian Organic Solar Cell Consortium (VICOSC) – a collaboration between CSIRO, the University of Melbourne, Monash University and industry partners – to print organic photovoltaic cells the size of an A3 sheet of paper.

According to CSIRO materials scientist Dr Scott Watkins, printing cells on such a large scale opens up a huge range of possibilities for pilot applications: "There are so many things we can do with cells this size. We can set them into advertising signage, powering lights and other interactive elements. We can even embed them into laptop cases to provide backup power for the machine inside."

The new printer, worth A$200,000, is a big step up for the VICOSC team. In just three years they have gone from making cells the size of a fingernail to cells 10cm square. Now with the new printer they have jumped to cells that are 30cm wide.

 

solar cell

 

VICOSC project coordinator and University of Melbourne researcher Dr David Jones says that one of the great advantages of the group's approach is that they're using existing printing methods, making it a very accessible technology.

"We're using the same techniques that you would use if you were screen printing an image onto a T-Shirt," he says.

Using semiconducting inks, the researchers print the cells straight onto paper-thin flexible plastic or steel. With the ability to print at speeds of up to ten metres per minute, this means they can produce one cell every two seconds.

As the researchers continue to scale up their equipment, the possibilities will become even greater.

"Eventually we see these being laminated to windows that line skyscrapers," Dr Jones says. "By printing directly to materials like steel, we'll also be able to embed cells onto roofing materials."

The organic photovoltaic cells, which produce up to 50 watts of power per square metre, could even be used to improve the efficiency of more traditional silicon solar panels.

 

Click to enlarge

solar efficiencies

 

"The different types of cells capture light from different parts of the solar spectrum. So rather than being competing technologies, they are actually very complementary," Dr Watkins says.

The scientists predict that the future energy mix for the world, including Australia, will rely on many non-traditional energy sources. "We need to be at the forefront of developing new technologies that match our solar endowment, stimulate our science and support local, high-tech manufacturing.

"While the consortium is focused on developing applications with current industrial partners there are opportunities to work with other companies through training programs or pilot-scale production trials," he says.

As part of the consortium, a complementary screen printing line is also being installed at nearby Monash University. Combined, they will make the Clayton Manufacturing and Materials Precinct one of the largest organic solar cell printing facilities in the world.

 

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