Articles With "green tech" Tag

Stacking Solar Cells Could Vastly Improve Their Efficiency

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Harvesting solar energy is a great way to generate sustainable power, but unfortunately solar cells are far from being as efficient as they might be. Currently, commercially available solar cells can convert about 25 percent of sunlight into electricity, and scientists have been trying to create better solar cells for years. One milestone they have been unsuccessfully trying to reach is 50 percent conversion efficiency of solar cells. However, the start-up company Semprius might be on the right track with the stacking technique of solar cells they recently developed.
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Listening to Plants

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Photo: Video screen capture EuroNews

Plants, just like humans and animals, have a way of communicating with each other. Their language is comprised of electrical signals, through which they send messages to other plants. And now an international group of scientists is developing a way to analyze these electrical signals, and translate them into information we can understand. The project is called PLEASED (PLants Employed As SEnsing Devices) and has already received €1.07 million ($1.46 million) in EU funding.
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More Environmentally Friendly Solar Cells

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Researchers at Northwestern University have developed a new solar cell that uses tin instead of lead perovskite as a collector of solar energy. This cheap and environmentally-friendly solar cell can therefore be made without any high-tech equipment or hazardous materials.
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Could Tofu be the Answer to Greener Solar Cells?

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University of Liverpool News

Dr. Jon Major, a researcher at Liverpool University has recently made the discovery that the chemical used to make tofu, and bath salts, could also be used to replace one of the most toxic substances, namely cadmium chloride, that are used to manufacture solar cells. Using salts to replace cadmium chloride in solar cell production would also make them much cheaper. His study was published in the journal Nature.
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Rooftop Mounted Wind Turbines That Make Homes Self-Sufficient

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When it comes to renewable energy, wind turbines are certainly one of the greener and more sustainable options. Their biggest drawbacks is that they have to be large to produce enough energy, and that they make a lot of noise, which is why they haven’t yet been widely adopted by homeowners. However, The Archimedes, a Holland-based renewable energy start-up is currently working on a solution to this problem. They are designing a wind turbine small enough to be mounted on the roof of a typical home, but which is still highly efficient at converting wind to energy and does so nearly soundlessly.

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New High-performance Supercapacitor Developed in California

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A team of researchers at the University of California, Riverside (UCR) has developed a new graphene-based supercapacitor, which is based on a nanoscale architecture. This breakthrough supercapacitor offers double the energy and power performance over today’s available competitors. Supercapacitors like this could one day be used for charging high-performance electric cars and personal electronics by effectively replacing batteries.
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