星期六, 24 5 月, 2025
Home PV Project Use your computer printer to make polymer solar cells

Use your computer printer to make polymer solar cells

Imagine being able to print inexpensive solar cells on paper using your computer printer or painting them on plastic sheets that can stick to a roof or wall to collect energy supplied by the sun's rays.


    Not only did scientists at the New Jersey Institute of Technology imagine the new polymer-based technology, they invented it because purified silicon, a core material for making conventional solar cells, is too expensive to produce on a consumer level.


    "Developing organic solar cells from polymers, however, is a cheap and potentially simpler alternative," said lead researcher Somenath Mitra. "Imagine some day driving in your hybrid car with a solar panel painted on the roof, which is producing electricity to drive the engine. The opportunities are endless."


    The "paintable" solar-cell coating developed at NJIT is made of carbon nanotubes that function like electric wires but are about 50,000 times smaller than a strand of hair. Just one nanotube can conduct current better than typical electrical wiring. "Actually, nanotubes are significantly better conductors than copper," Mitra added.


    Mitra and his research partner, Cheng Li, also at NJIT, encased the carbon nanotubes in "fullerenes," protective compounds that can trap electricity and keep it from escaping.


    Then, sunlight can activate a process in which the nanotubes, behaving like copper wires, will run collected solar energy converted to electrical current to power household appliances like your microwave.


    "Using this unique combination in an organic solar-cell recipe can enhance the efficiency of future painted-on solar cells," said Mitra. "Someday, I hope to see this process become an inexpensive energy alternative for households around the world."


 

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